Undergraduate research assistant (development of webpages for research projects and services), Optics Atmospheric Group of Camagüey (GOAC), Meteorological Institute, CUBA (2007-2011). Engineer in Computer Sciences (2012) and MsC in Applied Informatics (2016) at Camagüey University, Cuba. Scientific reserve, (webmaster, computational support to research and service activities, data transfer, quality control and processing from GPS station; WRF model installation, setup and running; cloud camera design, assembling, quality control and processing software design and implementation), GOAC (2012-2017). Then he obtained a predoctoral researcher position at the Group of Atmospheric Optics, University of Valladolid (Spain) within the “FPI-MINECO” program of the Ministry of Economy, Industry and Competitiveness, Spain (2017).
Publications
2023
Sara Herrero-Anta; Roberto Román; David Mateos; Ramiro González; Juan Carlos Antuña-Sánchez; Marcos Herreras-Giralda; Antonio Fernando Almansa; Daniel González-Fernández; Celia Herrero del Barrio; Carlos Toledano; Victoria Eugenia Cachorro; Ángel Máximo de Frutos
Retrieval of aerosol properties from zenith sky radiance measurements Journal Article
In: Atmospheric Measurement Techniques, vol. 16, no. 19, pp. 4423–4443, 2023.
@article{Herrero-Anta2023,
title = {Retrieval of aerosol properties from zenith sky radiance measurements},
author = {Sara Herrero-Anta and Roberto Román and David Mateos and Ramiro González and Juan Carlos Antuña-Sánchez and Marcos Herreras-Giralda and Antonio Fernando Almansa and Daniel González-Fernández and Celia Herrero del Barrio and Carlos Toledano and Victoria Eugenia Cachorro and Ángel Máximo de Frutos},
url = {https://amt.copernicus.org/articles/16/4423/2023/},
doi = {10.5194/amt-16-4423-2023},
year = {2023},
date = {2023-10-09},
urldate = {2023-10-09},
journal = {Atmospheric Measurement Techniques},
volume = {16},
number = {19},
pages = {4423–4443},
abstract = {This study explores the potential to retrieve aerosol properties with the GRASP algorithm (Generalized Retrieval of Atmosphere and Surface Properties) using as input measurements of zenith sky radiance (ZSR), which are sky radiance values measured in the zenith direction, recorded at four wavelengths by a ZEN-R52 radiometer. To this end, the ZSR measured at 440, 500, 675 and 870?nm by a ZEN-R52 (ZSRZEN), installed in Valladolid (Spain), is employed. This instrument is calibrated by intercomparing the signal of each channel with coincident ZSR values simulated (ZSRSIM) at the same wavelengths with a radiative transfer model (RTM). These simulations are carried out using the GRASP forward module as RTM and the aerosol information from a co-located CE318 photometer belonging to AERONET (AErosol RObotic NETwork) as input. The dark signal and the signal dependence on temperature are characterized and included in the calibration process. The uncertainties for each channel are quantified by an intercomparison with a co-located CE318 photometer, obtaining lower values for shorter wavelengths; they are between 3?% for 440?nm and 21?% for 870?nm. The proposed inversion strategy for the aerosol retrieval using the ZSRZEN measurements as input, i.e. so-called GRASP-ZEN, assumes the aerosol as an external mixture of five pre-calculated aerosol types. A sensitivity analysis is conducted using synthetic ZSRZEN measurements, pointing out that these measurements are sensitive to aerosol load and type. It also assesses that the retrieved aerosol optical depth (AOD) values in general overestimate the reference ones by 0.03, 0.02, 0.02 and 0.01 for 440, 500, 675 and 870?nm, respectively. The calibrated ZSRZEN measurements, recorded during 2.5 years at Valladolid, are inverted by the GRASP-ZEN strategy to retrieve some aerosol properties like AOD. The retrieved AOD shows a high correlation with respect to independent values obtained from a co-located AERONET CE318 photometer, with determination coefficients (r2) of 0.86, 0.85, 0.79 and 0.72 for 440, 500, 675 and 870?nm, respectively, and finding uncertainties between 0.02 and 0.03 with respect to the AERONET values. Finally, the retrieval of other aerosol properties, like aerosol volume concentration for total, fine and coarse modes (VCT, VCF and VCC, respectively), is also explored. The comparison against independent values from AERONET presents r2 values of 0.57, 0.56 and 0.66 and uncertainties of 0.009, 0.016 and 0.02?µm3?µm?2 for VCT, VCF and VCC, respectively},
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This study explores the potential to retrieve aerosol properties with the GRASP algorithm (Generalized Retrieval of Atmosphere and Surface Properties) using as input measurements of zenith sky radiance (ZSR), which are sky radiance values measured in the zenith direction, recorded at four wavelengths by a ZEN-R52 radiometer. To this end, the ZSR measured at 440, 500, 675 and 870?nm by a ZEN-R52 (ZSRZEN), installed in Valladolid (Spain), is employed. This instrument is calibrated by intercomparing the signal of each channel with coincident ZSR values simulated (ZSRSIM) at the same wavelengths with a radiative transfer model (RTM). These simulations are carried out using the GRASP forward module as RTM and the aerosol information from a co-located CE318 photometer belonging to AERONET (AErosol RObotic NETwork) as input. The dark signal and the signal dependence on temperature are characterized and included in the calibration process. The uncertainties for each channel are quantified by an intercomparison with a co-located CE318 photometer, obtaining lower values for shorter wavelengths; they are between 3?% for 440?nm and 21?% for 870?nm. The proposed inversion strategy for the aerosol retrieval using the ZSRZEN measurements as input, i.e. so-called GRASP-ZEN, assumes the aerosol as an external mixture of five pre-calculated aerosol types. A sensitivity analysis is conducted using synthetic ZSRZEN measurements, pointing out that these measurements are sensitive to aerosol load and type. It also assesses that the retrieved aerosol optical depth (AOD) values in general overestimate the reference ones by 0.03, 0.02, 0.02 and 0.01 for 440, 500, 675 and 870?nm, respectively. The calibrated ZSRZEN measurements, recorded during 2.5 years at Valladolid, are inverted by the GRASP-ZEN strategy to retrieve some aerosol properties like AOD. The retrieved AOD shows a high correlation with respect to independent values obtained from a co-located AERONET CE318 photometer, with determination coefficients (r2) of 0.86, 0.85, 0.79 and 0.72 for 440, 500, 675 and 870?nm, respectively, and finding uncertainties between 0.02 and 0.03 with respect to the AERONET values. Finally, the retrieval of other aerosol properties, like aerosol volume concentration for total, fine and coarse modes (VCT, VCF and VCC, respectively), is also explored. The comparison against independent values from AERONET presents r2 values of 0.57, 0.56 and 0.66 and uncertainties of 0.009, 0.016 and 0.02?µm3?µm?2 for VCT, VCF and VCC, respectively
S. Herrero-Anta; R. Román; D. Mateos; R. González; J. C. Antuña-Sánchez; M. Herreras-Giralda; A. F. Almansa; D. González-Fernández; C. Herrero del Barrio; C. Toledano; V. E. Cachorro; Á. M. Frutos
Retrieval of aerosol properties from zenith sky radiance measurements Conference
European Aerosol Conference 2023, Málaga, Spain, 2023.
@conference{Herrero-Anta2023c,
title = {Retrieval of aerosol properties from zenith sky radiance measurements},
author = {S. Herrero-Anta and R. Román and D. Mateos and R. González and J. C. Antuña-Sánchez and M. Herreras-Giralda and A. F. Almansa and D. González-Fernández and C. Herrero del Barrio and C. Toledano and V. E. Cachorro and Á. M. Frutos},
year = {2023},
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S. Herrero-Anta; R. Román, D. Mateos, J.C. Antuña-Sánchez, C. Toledano, F. Almansa, R. González, M. Herreras-Giralda, D. González-Fernández, C. Herrero del Barrio, V.E. Cachorro; A.M. de Frutos
Retrieval of aerosol properties from zenith sky radiance measurements Conference
Workshop on “Recent advancements in remote sensing and modeling of aerosols, clouds and surfaces” GRASP ACE Summer school, Lille, France, 2023.
@conference{Herrero-Anta2023b,
title = {Retrieval of aerosol properties from zenith sky radiance measurements },
author = {S. Herrero-Anta and R. Román, D. Mateos, J.C. Antuña-Sánchez, C. Toledano, F. Almansa, R. González, M. Herreras-Giralda, D. González-Fernández, C. Herrero del Barrio, V.E. Cachorro and A.M. de Frutos},
year = {2023},
date = {2023-05-22},
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2022
S. Herrero; R. Román; D. Mateos; J.C. Antuña-Sánchez; C. Toledano; F. Almansa; R. Gonzalez; M. Herreras-Giralda; D. González-Fernández; V.E. Cachorro; A.M. de Frutos
Retrieval of aerosol properties from zenith sky radiance measurements Conference
International Radiation Symposium Thessaloniki, 2022.
@conference{Herrero2022,
title = {Retrieval of aerosol properties from zenith sky radiance measurements},
author = {S. Herrero and R. Román and D. Mateos and J.C. Antuña-Sánchez and C. Toledano and F. Almansa and R. Gonzalez and M. Herreras-Giralda and D. González-Fernández and V.E. Cachorro and A.M. de Frutos},
year = {2022},
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R. Román; D. González-Fernández; C. Toledano; C. Emde; V. Cachorro; D. Mateos; S. Herrero-Anta; J. C. Antuña-Sánchez; R. González; J.C. Antuña-Marrero; B. Mayer; A. Calle; A.M. de Frutos
Impact of clouds on cloud-free sky radiances in a partially cloudy scenario Conference
International Radiation Symposium Thessaloniki, Greece, 2022.
@conference{Román2022b,
title = {Impact of clouds on cloud-free sky radiances in a partially cloudy scenario},
author = {R. Román and D. González-Fernández and C. Toledano and C. Emde and V. Cachorro and D. Mateos and S. Herrero-Anta and J. C. Antuña-Sánchez and R. González and J.C. Antuña-Marrero and B. Mayer and A. Calle and A.M. de Frutos},
year = {2022},
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R. Román; J. C. Antuña-Sánchez; V. E. Cachorro; C. Toledano; B. Torres; D. Mateos; D. Fuertes; C. López; R. González; T. Lapionok; M. Herreras-Giralda; O. Dubovik; A.M. de Frutos
Retrieval of Aerosol Properties with an all-sky Camera Conference
International Radiation Symposium Thessaloniki, Greece, 2022.
@conference{Román2022c,
title = {Retrieval of Aerosol Properties with an all-sky Camera},
author = {R. Román and J. C. Antuña-Sánchez and V. E. Cachorro and C. Toledano and B. Torres and D. Mateos and D. Fuertes and C. López and R. González and T. Lapionok and M. Herreras-Giralda and O. Dubovik and A.M. de Frutos},
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D. Mateos; S. Herrero; R. Román; C. Ritter; J.C. Antuña-Sanchez; D. Ruiz-Ramos; D. González-Fernández; R. González; J.C. Antuña-Marrero; C. Toledano; V.E. Cachorro; A. Calle; A.M. de Frutos
Aerosol Radiative Effect in the European Arctic Under High Turbidity Conditions in the Period 2017-2021 by Sun/Lunar Photometry Conference
International Radiation Symposium Thessaloniki, Greece, 2022.
@conference{Mateos2022,
title = {Aerosol Radiative Effect in the European Arctic Under High Turbidity Conditions in the Period 2017-2021 by Sun/Lunar Photometry},
author = {D. Mateos and S. Herrero and R. Román and C. Ritter and J.C. Antuña-Sanchez and D. Ruiz-Ramos and D. González-Fernández and R. González and J.C. Antuña-Marrero and C. Toledano and V.E. Cachorro and A. Calle and A.M. de Frutos},
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A. Calle; P. Martín; C. Toledano; R. González; R. Román; D. Mateos; V. Cachorro; S. Herrero; J.C. Antuña-Marrero; D. González-Fernández; A.M. de Frutos
Caracterización del espesor óptico de aerosoles en latitudes árticas y antárticas Conference
XIX Congreso de la Asociación Española de Teledetección Pamplona, Spain, 2022.
@conference{Calle2022,
title = {Caracterización del espesor óptico de aerosoles en latitudes árticas y antárticas},
author = {A. Calle and P. Martín and C. Toledano and R. González and R. Román and D. Mateos and V. Cachorro and S. Herrero and J.C. Antuña-Marrero and D. González-Fernández and A.M. de Frutos
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J.C. Antuña-Sánchez; R. Román; J.L. Bosch; C. Toledano; D. Mateos; R. González; V.E. Cachorro; Ángel de Frutos
ORION software tool for the geometrical calibration of all-sky cameras Journal Article
In: PLoS ONE 17(3), 2022.
@article{Antuña-Sánchez2022,
title = {ORION software tool for the geometrical calibration of all-sky cameras},
author = {J.C. Antuña-Sánchez and R. Román and J.L. Bosch and C. Toledano and D. Mateos and R. González and V.E. Cachorro and Ángel de Frutos},
doi = {10.1371/journal.pone.0265959},
year = {2022},
date = {2022-03-31},
urldate = {2022-03-31},
journal = {PLoS ONE 17(3)},
abstract = {This paper presents the software application ORION (All-sky camera geOmetry calibRation from star positIONs). This software has been developed with the aim of providing geometrical calibration to all-sky cameras, i.e. assess which sky coordinates (zenith and azimuth angles) correspond to each camera pixel. It is useful to locate bodies over the celestial vault, like stars and planets, in the camera images. The user needs to feed ORION with a set of cloud-free sky images captured at night-time for obtaining the calibration matrices. ORION searches the position of various stars in the sky images. This search can be automatic or manual. The sky coordinates of the stars and the corresponding pixel positions in the camera images are used together to determine the calibration matrices. The calibration is based on three parameters: the pixel position of the sky zenith in the image; the shift angle of the azimuth viewed by the camera with respect to the real North; and the relationship between the sky zenith angle and the pixel radial distance regards to the sky zenith in the image. In addition, ORION includes other features to facilitate its use, such as the check of the accuracy of the calibration. An example of ORION application is shown, obtaining the calibration matrices for a set of images and studying the accuracy of the calibration to predict a star position. Accuracy is about 9.0 arcmin for the analyzed example using a camera with average resolution of 5.4 arcmin/pixel (about 1.7 pixels).},
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This paper presents the software application ORION (All-sky camera geOmetry calibRation from star positIONs). This software has been developed with the aim of providing geometrical calibration to all-sky cameras, i.e. assess which sky coordinates (zenith and azimuth angles) correspond to each camera pixel. It is useful to locate bodies over the celestial vault, like stars and planets, in the camera images. The user needs to feed ORION with a set of cloud-free sky images captured at night-time for obtaining the calibration matrices. ORION searches the position of various stars in the sky images. This search can be automatic or manual. The sky coordinates of the stars and the corresponding pixel positions in the camera images are used together to determine the calibration matrices. The calibration is based on three parameters: the pixel position of the sky zenith in the image; the shift angle of the azimuth viewed by the camera with respect to the real North; and the relationship between the sky zenith angle and the pixel radial distance regards to the sky zenith in the image. In addition, ORION includes other features to facilitate its use, such as the check of the accuracy of the calibration. An example of ORION application is shown, obtaining the calibration matrices for a set of images and studying the accuracy of the calibration to predict a star position. Accuracy is about 9.0 arcmin for the analyzed example using a camera with average resolution of 5.4 arcmin/pixel (about 1.7 pixels).
V. E. Cachorro; J. C. Antuña-Sanchez; Á. M. Frutos
SSolar-GOA v1.0: a simple, fast, and accurate Spectral SOLAR radiative transfer model for clear skies Journal Article
In: Geoscientific Model Development, vol. 15, no. 4, pp. 1689–1712, 2022.
@article{Cachorro2022,
title = {SSolar-GOA v1.0: a simple, fast, and accurate Spectral SOLAR radiative transfer model for clear skies},
author = {V. E. Cachorro and J. C. Antuña-Sanchez and Á. M. Frutos},
url = {https://gmd.copernicus.org/articles/15/1689/2022/},
doi = {10.5194/gmd-15-1689-2022},
year = {2022},
date = {2022-02-25},
urldate = {2022-02-25},
journal = {Geoscientific Model Development},
volume = {15},
number = {4},
pages = {1689--1712},
abstract = {The aim of this work is to describe the features of and to validate a simple, fast, accurate, and physically based spectral radiative transfer model in the solar wavelength range under clear skies. The model, named SSolar-GOA (the first “S” stands for “spectral”), was developed to evaluate the instantaneous values of spectral solar irradiances at ground level or at a given altitude of the atmosphere. The model requirements are designed based on the simplicity of the analytical expressions for the transmittance functions in order to be easily replicated and applied by a wide community of users for many different applications (atmospheric and environmental research studies, satellite remote sensing, solar energy, agronomy and forestry, ecology, and others). Although spectral, the model runs quickly and has sufficient accuracy for the evaluation of solar irradiances with a spectral resolution of 1–10?nm. The model assumes a single mixed molecule–aerosol scattering layer where the original Ambartsumian method of “adding layers” in a one-dimensional medium is applied, obtaining a parameterized expression for the total transmittance of scattering. Absorption by the different atmospheric gases follows “band model” parameterized expressions. The input parameters must be realistic and easily available since the spectral aerosol optical depth (AOD) is the main driver of the model. The validation of the SSolar-GOA model has been carried out through comparison with simulated irradiance data from the libRadtran package and with direct and global spectra measured by spectroradiometers. Thousands of spectra under clear skies have been compared for different atmospheric conditions and solar zenith angles (SZA). The SSolar-GOA is validated by a quantitative comparison with libRadtran, showing that it underestimates direct normal, global, and diffuse spectral components with relative differences of +1?% (RMSE?%?=?4.6–8), +3?% (RMSE?%?=?5.3–8), and 8?% (RMSE?%?=?9.3–9.6), respectively, when the SZA varies from 6 to 60?. Compared with the measured irradiance data of the LI-1800 and ASD spectroradiometers, the relative differences of direct normal and global components are within the overall experimental error, about ±2?%–12?% (RMSE?%?=?5–8.3), with underestimated or overestimated values. The diffuse component presents the highest degree of relative difference that can reach ±20?%–30?% and RMSE of 25?%–50?%. The relative differences depend strongly on the spectral solar region analysed and the SZA, but the high values of RMSE are due to the artifice generated by the different spectral resolution of the absorption coefficients of both models. Model approach errors combined with calibration instrument errors may explain the observed differences. The SSolar-GOA v1.0 is implemented in Python and open-source licensing.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The aim of this work is to describe the features of and to validate a simple, fast, accurate, and physically based spectral radiative transfer model in the solar wavelength range under clear skies. The model, named SSolar-GOA (the first “S” stands for “spectral”), was developed to evaluate the instantaneous values of spectral solar irradiances at ground level or at a given altitude of the atmosphere. The model requirements are designed based on the simplicity of the analytical expressions for the transmittance functions in order to be easily replicated and applied by a wide community of users for many different applications (atmospheric and environmental research studies, satellite remote sensing, solar energy, agronomy and forestry, ecology, and others). Although spectral, the model runs quickly and has sufficient accuracy for the evaluation of solar irradiances with a spectral resolution of 1–10?nm. The model assumes a single mixed molecule–aerosol scattering layer where the original Ambartsumian method of “adding layers” in a one-dimensional medium is applied, obtaining a parameterized expression for the total transmittance of scattering. Absorption by the different atmospheric gases follows “band model” parameterized expressions. The input parameters must be realistic and easily available since the spectral aerosol optical depth (AOD) is the main driver of the model. The validation of the SSolar-GOA model has been carried out through comparison with simulated irradiance data from the libRadtran package and with direct and global spectra measured by spectroradiometers. Thousands of spectra under clear skies have been compared for different atmospheric conditions and solar zenith angles (SZA). The SSolar-GOA is validated by a quantitative comparison with libRadtran, showing that it underestimates direct normal, global, and diffuse spectral components with relative differences of +1?% (RMSE?%?=?4.6–8), +3?% (RMSE?%?=?5.3–8), and 8?% (RMSE?%?=?9.3–9.6), respectively, when the SZA varies from 6 to 60?. Compared with the measured irradiance data of the LI-1800 and ASD spectroradiometers, the relative differences of direct normal and global components are within the overall experimental error, about ±2?%–12?% (RMSE?%?=?5–8.3), with underestimated or overestimated values. The diffuse component presents the highest degree of relative difference that can reach ±20?%–30?% and RMSE of 25?%–50?%. The relative differences depend strongly on the spectral solar region analysed and the SZA, but the high values of RMSE are due to the artifice generated by the different spectral resolution of the absorption coefficients of both models. Model approach errors combined with calibration instrument errors may explain the observed differences. The SSolar-GOA v1.0 is implemented in Python and open-source licensing.
Juan Carlos Antuña-Marrero; Roberto Román; Victoria E. Cachorro; David Mateos; Carlos Toledano; Abel Calle; Juan Carlos Antuña-Sánchez; Javier Vaquero-Martínez; Manuel Antón; Ángel M. Frutos Baraja
Integrated water vapor over the Arctic: Comparison between radiosondes and sun photometer observations Journal Article
In: Atmospheric Research, vol. 270, pp. 106059, 2022, ISSN: 0169-8095.
@article{Antuña-Marrero2022,
title = {Integrated water vapor over the Arctic: Comparison between radiosondes and sun photometer observations},
author = {Juan Carlos Antuña-Marrero and Roberto Román and Victoria E. Cachorro and David Mateos and Carlos Toledano and Abel Calle and Juan Carlos Antuña-Sánchez and Javier Vaquero-Martínez and Manuel Antón and Ángel M. Frutos Baraja},
url = {https://www.sciencedirect.com/science/article/pii/S016980952200045X},
doi = {https://doi.org/10.1016/j.atmosres.2022.106059},
issn = {0169-8095},
year = {2022},
date = {2022-02-02},
urldate = {2022-01-01},
journal = {Atmospheric Research},
volume = {270},
pages = {106059},
abstract = {The amplification of global warming because of the feedbacks associated with the increase in atmospheric moisture and the decrease in sea ice and snow cover in the Arctic is currently the focus of scientists, policy makers and society. The amplification of global warming is the response to increases in precipitation originally caused by climate change. Arctic predominant increases in specific humidity and precipitation have been documented by observations. In comparison, evapotranspiration in the Arctic is poorly known, in part, because the spatial and temporal sparsity of accurate in situ and remote sensing observations. Although more than 20 observations sites in the Arctic are available, where AERONET sun photometer integrated water vapor (IWV) measurements have been conducted, that information have been barely used. Here, we present a comparison of IWV observations from radiosondes and AERONET sun photometers at ten sites located across the Arctic with the goal to document the feasibility of that set of observations to contribute to the ongoing and future research on polar regions. Sun photometer IWV observations are averaged for three-time windows; 30 min, 6 and 24 h. The predominant dry bias of AERONET IWV observations with respect to radiosondes, identified at tropical and midlatitudes, is also present in the Arctic. The statistics of the comparison show robust results at eight of the ten sites, with precision and accuracy magnitudes below 8 and 2% respectively. The possible causes of the less robust results at the other two sites are discussed. In addition, the impact of selecting other temporal coincidence windows in the average sun photometer IWV used in the comparison were tested. Auto-correlation in diurnal sun photometer IWV could produce appreciable bias in the statistics used for the comparison. We suggest using only one pair of values per day, consisting in the daily mean IWV sun photometer and the IWV radiosonde observation value. This feature should be valid also for comparison of IWV from sun photometer and other instruments. Maximum 10% error level of IWV from sun photometer observations, when compared with radiosondes, have been found for the Arctic. It is in the same order of magnitude than at tropical and middle latitudes locations. It has been demonstrated the feasibility of AERONET IWV observations in the Arctic for research on this variable. AERONET standard instruments and its centralized-standard processing algorithm allow its IWV observations to be considered a relative standard dataset for the re-calibration of other instrumental IWV observations assuming radiosondes as the absolute standard dataset.},
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}
The amplification of global warming because of the feedbacks associated with the increase in atmospheric moisture and the decrease in sea ice and snow cover in the Arctic is currently the focus of scientists, policy makers and society. The amplification of global warming is the response to increases in precipitation originally caused by climate change. Arctic predominant increases in specific humidity and precipitation have been documented by observations. In comparison, evapotranspiration in the Arctic is poorly known, in part, because the spatial and temporal sparsity of accurate in situ and remote sensing observations. Although more than 20 observations sites in the Arctic are available, where AERONET sun photometer integrated water vapor (IWV) measurements have been conducted, that information have been barely used. Here, we present a comparison of IWV observations from radiosondes and AERONET sun photometers at ten sites located across the Arctic with the goal to document the feasibility of that set of observations to contribute to the ongoing and future research on polar regions. Sun photometer IWV observations are averaged for three-time windows; 30 min, 6 and 24 h. The predominant dry bias of AERONET IWV observations with respect to radiosondes, identified at tropical and midlatitudes, is also present in the Arctic. The statistics of the comparison show robust results at eight of the ten sites, with precision and accuracy magnitudes below 8 and 2% respectively. The possible causes of the less robust results at the other two sites are discussed. In addition, the impact of selecting other temporal coincidence windows in the average sun photometer IWV used in the comparison were tested. Auto-correlation in diurnal sun photometer IWV could produce appreciable bias in the statistics used for the comparison. We suggest using only one pair of values per day, consisting in the daily mean IWV sun photometer and the IWV radiosonde observation value. This feature should be valid also for comparison of IWV from sun photometer and other instruments. Maximum 10% error level of IWV from sun photometer observations, when compared with radiosondes, have been found for the Arctic. It is in the same order of magnitude than at tropical and middle latitudes locations. It has been demonstrated the feasibility of AERONET IWV observations in the Arctic for research on this variable. AERONET standard instruments and its centralized-standard processing algorithm allow its IWV observations to be considered a relative standard dataset for the re-calibration of other instrumental IWV observations assuming radiosondes as the absolute standard dataset.
R. Román; J. C. Antuña-Sánchez; V. E. Cachorro; C. Toledano; B. Torres; D. Mateos; D. Fuertes; C. López; R. González; T. Lapionok; M. Herreras-Giralda; O. Dubovik; Á. M. Frutos
Retrieval of aerosol properties using relative radiance measurements from an all-sky camera Journal Article
In: Atmospheric Measurement Techniques, vol. 15, no. 2, pp. 407–433, 2022.
@article{Román2022,
title = {Retrieval of aerosol properties using relative radiance measurements from an all-sky camera},
author = {R. Román and J. C. Antuña-Sánchez and V. E. Cachorro and C. Toledano and B. Torres and D. Mateos and D. Fuertes and C. López and R. González and T. Lapionok and M. Herreras-Giralda and O. Dubovik and Á. M. Frutos},
url = {https://amt.copernicus.org/articles/15/407/2022/},
doi = {10.5194/amt-15-407-2022},
year = {2022},
date = {2022-01-27},
urldate = {2022-01-01},
journal = {Atmospheric Measurement Techniques},
volume = {15},
number = {2},
pages = {407--433},
abstract = {This paper explores the potential of all-sky cameras to retrieve aerosol properties with the GRASP code (Generalized Retrieval of Atmosphere and Surface Properties). To this end, normalized sky radiances (NSRs) extracted from an all-sky camera at three effective wavelengths (467, 536 and 605?nm) are used in this study. NSR observations are a set of relative (uncalibrated) sky radiances in arbitrary units. NSR observations have been simulated for different aerosol loads and types with the forward radiative transfer module of GRASP, indicating that NSR observations contain information about the aerosol type, as well as about the aerosol optical depth (AOD), at least for low and moderate aerosol loads. An additional sensitivity study with synthetic data has been carried out to quantify the theoretical accuracy and precision of the aerosol properties (AOD, size distribution parameters, etc.) retrieved by GRASP using NSR observations as input. As a result, the theoretical accuracy of AOD is within ±0.02 for AOD values lower than or equal to 0.4, while the theoretical precision goes from 0.01 to 0.05 when AOD at 467?nm varies from 0.1 to 0.5. NSR measurements recorded at Valladolid (Spain) with an all-sky camera for more than 2 years have been inverted with GRASP. The retrieved aerosol properties are compared with independent values provided by co-located AERONET (AErosol RObotic NETwork) measurements. AODs from both data sets correlate with determination coefficient (r2) values of about 0.87. Finally, the novel multi-pixel approach of GRASP is applied to daily camera radiances together by constraining the temporal variation in certain aerosol properties. This temporal linkage (multi-pixel approach) provides promising results, reducing the highly temporal variation in some aerosol properties retrieved with the standard (one by one or single-pixel) approach. This work implies an advance in the use of all-sky cameras for the retrieval of aerosol properties.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This paper explores the potential of all-sky cameras to retrieve aerosol properties with the GRASP code (Generalized Retrieval of Atmosphere and Surface Properties). To this end, normalized sky radiances (NSRs) extracted from an all-sky camera at three effective wavelengths (467, 536 and 605?nm) are used in this study. NSR observations are a set of relative (uncalibrated) sky radiances in arbitrary units. NSR observations have been simulated for different aerosol loads and types with the forward radiative transfer module of GRASP, indicating that NSR observations contain information about the aerosol type, as well as about the aerosol optical depth (AOD), at least for low and moderate aerosol loads. An additional sensitivity study with synthetic data has been carried out to quantify the theoretical accuracy and precision of the aerosol properties (AOD, size distribution parameters, etc.) retrieved by GRASP using NSR observations as input. As a result, the theoretical accuracy of AOD is within ±0.02 for AOD values lower than or equal to 0.4, while the theoretical precision goes from 0.01 to 0.05 when AOD at 467?nm varies from 0.1 to 0.5. NSR measurements recorded at Valladolid (Spain) with an all-sky camera for more than 2 years have been inverted with GRASP. The retrieved aerosol properties are compared with independent values provided by co-located AERONET (AErosol RObotic NETwork) measurements. AODs from both data sets correlate with determination coefficient (r2) values of about 0.87. Finally, the novel multi-pixel approach of GRASP is applied to daily camera radiances together by constraining the temporal variation in certain aerosol properties. This temporal linkage (multi-pixel approach) provides promising results, reducing the highly temporal variation in some aerosol properties retrieved with the standard (one by one or single-pixel) approach. This work implies an advance in the use of all-sky cameras for the retrieval of aerosol properties.
Albeht Rodríguez-Vega; Juan Carlos Antuña-Marrero; David Barriopedro; Ricardo García-Herrera; Victoria E. Cachorro Revilla; Ángel Frutos Baraja; Juan Carlos Antuña-Sánchez
Climatology of aerosols over the Caribbean islands: aerosol types, synoptic patterns and transport Journal Article
In: Journal of Applied Meteorology and Climatology, 2022.
@article{ClimatologyofaerosolsovertheCaribbeanislandsaerosoltypessynopticpatternsandtransport,
title = {Climatology of aerosols over the Caribbean islands: aerosol types, synoptic patterns and transport},
author = {Albeht Rodríguez-Vega and Juan Carlos Antuña-Marrero and David Barriopedro and Ricardo García-Herrera and Victoria E. Cachorro Revilla and Ángel Frutos Baraja and Juan Carlos Antuña-Sánchez},
url = {https://journals.ametsoc.org/view/journals/apme/aop/JAMC-D-21-0015.1/JAMC-D-21-0015.1.xml},
doi = {10.1175/JAMC-D-21-0015.1},
year = {2022},
date = {2022-01-01},
urldate = {2022-01-01},
journal = {Journal of Applied Meteorology and Climatology},
publisher = {American Meteorological Society},
address = {Boston MA, USA},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Juan Carlos Antuña Sánchez
Universidad de Valladolid, 2022, (dirección: Roberto Román, Ángel M. de Frutos y Victoria E. Cachorro.).
@phdthesis{Sánchez2021,
title = { Configuración y metodología para el uso de cámaras de todo cielo en la obtención de parámetros atmosféricos},
author = {Juan Carlos Antuña Sánchez},
url = {https://uvadoc.uva.es/handle/10324/60022},
doi = {10.35376/10324/60022},
year = {2022},
date = {2022-01-01},
urldate = {2021-01-01},
school = {Universidad de Valladolid},
abstract = {Atmospheric aerosols, solid or liquid particles floating in the atmosphere, play an important role in the Earth's climate, since they scatter and absorb part of the solar radiation reaching the Earth. The aerosol properties are usually obtained by measuring the diffuse solar radiation incoming in different directions (sky radiance), which is partially formed by the scattering of aerosols. The sky radiance is usually measured with photometers. A cheaper alternative to these photometers are the all-sky cameras, which capture images of the whole sky. In this doctoral thesis we propose the use of all-sky cameras to retrieve atmospheric parameters like the sky radiance and some aerosol properties, which can be obtained from these radiances. In this work, the ORION application has been developed to calibrate geometrically the all-sky cameras through the position of the stars. These calibrations are essential to locate the pixels of the camera pointing to a specific direction, such as the directions in which the sky radiance will be extracted. An all-sky camera has been geometrically calibrated with ORION, but it also has been configured to capture images in RAW format at different exposure times. The multi-exposure configuration, in addition with a exhaustive characterization of the camera (effective wavelengths, linearity, read noise, etc.), has allowed to obtain a linear high dynamic range image of the sky applying a proposed methodology. The sky radiance is proportional to the linear image obtained, so a relative sky radiance can be obtained with this proposed methodology. Once the relative sky radiances have been obtained with the all-sky camera, they have been used as input parameter in the GRASP (Generalized Retrieval of Atmosphere and Surface Properties) inversion algorithm to obtain some aerosol properties. It has been studied, using synthetic data, what aerosol properties can be derived from the relative sky radiance measured by all-sky cameras. The aerosol properties obtained with real measurements on GRASP have been compared with those independently derived by an AERONET (AErosol RObotic NETwork) photometer. This work concludes that, if the methodologies developed in this doctoral thesis are applied, a properly configured all-sky camera can be used to calculate the sky radiance, at least in a relative way, and these radiances can be also used to retrieve aerosol properties.},
note = {dirección: Roberto Román, Ángel M. de Frutos y Victoria E. Cachorro.},
keywords = {},
pubstate = {published},
tppubtype = {phdthesis}
}
Atmospheric aerosols, solid or liquid particles floating in the atmosphere, play an important role in the Earth's climate, since they scatter and absorb part of the solar radiation reaching the Earth. The aerosol properties are usually obtained by measuring the diffuse solar radiation incoming in different directions (sky radiance), which is partially formed by the scattering of aerosols. The sky radiance is usually measured with photometers. A cheaper alternative to these photometers are the all-sky cameras, which capture images of the whole sky. In this doctoral thesis we propose the use of all-sky cameras to retrieve atmospheric parameters like the sky radiance and some aerosol properties, which can be obtained from these radiances. In this work, the ORION application has been developed to calibrate geometrically the all-sky cameras through the position of the stars. These calibrations are essential to locate the pixels of the camera pointing to a specific direction, such as the directions in which the sky radiance will be extracted. An all-sky camera has been geometrically calibrated with ORION, but it also has been configured to capture images in RAW format at different exposure times. The multi-exposure configuration, in addition with a exhaustive characterization of the camera (effective wavelengths, linearity, read noise, etc.), has allowed to obtain a linear high dynamic range image of the sky applying a proposed methodology. The sky radiance is proportional to the linear image obtained, so a relative sky radiance can be obtained with this proposed methodology. Once the relative sky radiances have been obtained with the all-sky camera, they have been used as input parameter in the GRASP (Generalized Retrieval of Atmosphere and Surface Properties) inversion algorithm to obtain some aerosol properties. It has been studied, using synthetic data, what aerosol properties can be derived from the relative sky radiance measured by all-sky cameras. The aerosol properties obtained with real measurements on GRASP have been compared with those independently derived by an AERONET (AErosol RObotic NETwork) photometer. This work concludes that, if the methodologies developed in this doctoral thesis are applied, a properly configured all-sky camera can be used to calculate the sky radiance, at least in a relative way, and these radiances can be also used to retrieve aerosol properties.
2021
S. Herrero-Anta; D. Mateos; R. Román; D. González-Fernández; C. Toledano; R. González; J. C. Antuña-Sanchez; V. E. Cachorro; A. Calle; A. M. de Frutos
Empleo de técnicas de medida láser y fotométricas para la identificación de aerosoles atmosféricos en el Círculo polar Ártico Conference
XIII Reunión Nacional de Óptica (RNO) Madrid, Spain (Online), 2021.
@conference{Herrero-Anta2021d,
title = {Empleo de técnicas de medida láser y fotométricas para la identificación de aerosoles atmosféricos en el Círculo polar Ártico},
author = {S. Herrero-Anta and D. Mateos and R. Román and D. González-Fernández and C. Toledano and R. González and J. C. Antuña-Sanchez and V. E. Cachorro and A. Calle and A. M. de Frutos},
year = {2021},
date = {2021-11-22},
address = {Madrid, Spain (Online)},
organization = {XIII Reunión Nacional de Óptica (RNO) },
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
R. Román; R. González; A. Cazorla; M. Herreras-Giralda; J.C. Antuña-Sánchez; C. Toledano
CAECENET: Columnar and vertically-resolved aerosol products in near-real-time joining sun/sky photometer and ceilometer measurement networks Conference
European Lidar Conference 2021 (ELC2021) Granada, Spain, 2021.
@conference{Román2021,
title = {CAECENET: Columnar and vertically-resolved aerosol products in near-real-time joining sun/sky photometer and ceilometer measurement networks},
author = {R. Román and R. González and A. Cazorla and M. Herreras-Giralda and J.C. Antuña-Sánchez and C. Toledano},
year = {2021},
date = {2021-11-16},
address = {Granada, Spain},
organization = {European Lidar Conference 2021 (ELC2021)},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
R. Román; R. González; J.C. Antuña-Sánchez; A. Barreto; P. Martín; C. Toledano; R. Ramos; A. Cazorla; S. Herrero-Anta; D. Mateos; O. García; D. González-Fernández; R. Carracedo; M. Herreras-Giralda; V. Carreño; A. Calle; V.E. Cachorro; E. Cuevas; A. M. de Frutos
Vertical profiles of aerosol properties retrieved at La Palma, Canary Islands, during the CUmbre-Vieja volcano eruption in September-October 2021 Conference
European Lidar Conference 2021 (ELC2021) Granada, Spain, 2021.
@conference{Román2021b,
title = {Vertical profiles of aerosol properties retrieved at La Palma, Canary Islands, during the CUmbre-Vieja volcano eruption in September-October 2021},
author = {R. Román and R. González and J.C. Antuña-Sánchez and A. Barreto and P. Martín and C. Toledano and R. Ramos and A. Cazorla and S. Herrero-Anta and D. Mateos and O. García and D. González-Fernández and R. Carracedo and M. Herreras-Giralda and V. Carreño and A. Calle and V.E. Cachorro and E. Cuevas and A. M. de Frutos},
year = {2021},
date = {2021-11-16},
address = {Granada, Spain},
organization = {European Lidar Conference 2021 (ELC2021)},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
S. Herrero-Anta; D. Mateos; R. Román; D. González-Fernández; C. Toledano; R. González; V. E. Cachorro; A. Calle; A. M. de Frutos
Identification and tracking of a desert dust plume detected at Ny-Ålesund, Svalbard Conference
European Lidar Conference 2021 (ELC2021) Granada, Spain, 2021.
@conference{Herrero-Anta2021c,
title = {Identification and tracking of a desert dust plume detected at Ny-Ålesund, Svalbard},
author = {S. Herrero-Anta and D. Mateos and R. Román and D. González-Fernández and C. Toledano and R. González and V. E. Cachorro and A. Calle and A. M. de Frutos},
year = {2021},
date = {2021-11-16},
address = {Granada, Spain},
organization = {European Lidar Conference 2021 (ELC2021)},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
A. Barreto; R. Román; M. Sicard; V. Rizi; R. Roininen; P. M. Romero-Campos; Y. González; S. Rodríguez; R. D. García; C. Torres; M. Iarlori; O. E. García; E. Cuevas; C. Córdoba-Jabonero; J. de la Rosa; A. Rodríguez-Gómez; C. Muñoz-Porcar; A. Comerón; A. Bedoya-Velásquez; J.C. Antuña-Sanchez; V. Neustroev; E. Pietropaolo; Y. Lopez-Darias; J. J. Bustos; O. Álvarez; C. Toledano; C. Aramo; R. González; F.A. Almansa; R. Ceolato; N. Prats; A. Redondas; C. Bayo; R. Ramos; S. L. León; P. Martín
Characterization of volcanic aerosols from a synergetic perspective during Cumbre Vieja (La Palma) eruption Conference
ACTRIS Week 2021 Online, 2021.
@conference{Barreto2021c,
title = {Characterization of volcanic aerosols from a synergetic perspective during Cumbre Vieja (La Palma) eruption},
author = {A. Barreto and R. Román and M. Sicard and V. Rizi and R. Roininen and P. M. Romero-Campos and Y. González and S. Rodríguez and R. D. García and C. Torres and M. Iarlori and O. E. García and E. Cuevas and C. Córdoba-Jabonero and J. de la Rosa and A. Rodríguez-Gómez and C. Muñoz-Porcar and A. Comerón and A. Bedoya-Velásquez and J.C. Antuña-Sanchez and V. Neustroev and E. Pietropaolo and Y. Lopez-Darias and J. J. Bustos and O. Álvarez and C. Toledano and C. Aramo and R. González and F.A. Almansa and R. Ceolato and N. Prats and A. Redondas and C. Bayo and R. Ramos and S. L. León and P. Martín},
year = {2021},
date = {2021-10-27},
address = {Online},
organization = {ACTRIS Week 2021},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
R. González; C. Toledano; R. Román Diez; D. Mateos; E. Asmi; E. Rodriguez; J.C. Antuña-Sánchez; S. Herrero-Anta; V.E. Cachorro; A. Calle; A.M. de Frutos
Monitoring of long-range transported smoke in polar regions with remote sensing instruments Conference
EGU21, European Geosciences Union (EGU) Online, 2021.
@conference{González2021bb,
title = {Monitoring of long-range transported smoke in polar regions with remote sensing instruments},
author = {R. González and C. Toledano and R. Román Diez and D. Mateos and E. Asmi and E. Rodriguez and J.C. Antuña-Sánchez and S. Herrero-Anta and V.E. Cachorro and A. Calle and A.M. de Frutos},
year = {2021},
date = {2021-04-29},
booktitle = {EGU21},
address = {Online},
organization = {European Geosciences Union (EGU)},
abstract = {Long range transported aerosol from biomass burning affects polar regions, especially the Arctic. The frequency and intensity of bushfires in the context of a warming climate has been pointed out in the last report of the Intergovernmental Panel on Climate Change. In high latitudes, these events impact large areas through long-range transport of the smoke particles in the troposphere or even the stratosphere. The lifetime and radiative impact are related with the height of the plumes and the processes that modify particle size and absorptive properties during the transport. Several recent publications have shown the impact of the Australian smoke in the southern hemisphere, including Antarctica, in January-March 2020. The tools that were used to monitor that extraordinary event can be used in the Arctic to investigate similar effects in the frequent biomass burning events that generate smoke plumes in boreal regions. In this work, we present the results derived from ground-based instrumentation as well as satellite and model data. The change of the smoke properties after several days of transport is also provided, namely an increase in the fine mode particle size and the single scattering albedo, as well as a decrease in the coarse mode particle concentration. These features are relevant for radiative forcing calculations and therefore the impact of long range transported smoke in the radiative balance over polar regions.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Long range transported aerosol from biomass burning affects polar regions, especially the Arctic. The frequency and intensity of bushfires in the context of a warming climate has been pointed out in the last report of the Intergovernmental Panel on Climate Change. In high latitudes, these events impact large areas through long-range transport of the smoke particles in the troposphere or even the stratosphere. The lifetime and radiative impact are related with the height of the plumes and the processes that modify particle size and absorptive properties during the transport. Several recent publications have shown the impact of the Australian smoke in the southern hemisphere, including Antarctica, in January-March 2020. The tools that were used to monitor that extraordinary event can be used in the Arctic to investigate similar effects in the frequent biomass burning events that generate smoke plumes in boreal regions. In this work, we present the results derived from ground-based instrumentation as well as satellite and model data. The change of the smoke properties after several days of transport is also provided, namely an increase in the fine mode particle size and the single scattering albedo, as well as a decrease in the coarse mode particle concentration. These features are relevant for radiative forcing calculations and therefore the impact of long range transported smoke in the radiative balance over polar regions.
S. Herrero-Anta; D. Mateos; C. Toledano; R. Román; R. González; C. Ritter; J.C. Antuña-Sanchez; D. González-Fernández; A. Calle; V.E. Cachorro; A.M. de Frutos
Inventory of aerosol episodes in Ny-Ålesund (Svalbard) in the period 2017-2020 by sun photometry Conference
EGU21, European Geosciences Union (EGU) Online, 2021.
@conference{Herrero-Anta2021b,
title = {Inventory of aerosol episodes in Ny-Ålesund (Svalbard) in the period 2017-2020 by sun photometry},
author = { S. Herrero-Anta and D. Mateos and C. Toledano and R. Román and R. González and C. Ritter and J.C. Antuña-Sanchez and D. González-Fernández and A. Calle and V.E. Cachorro and A.M. de Frutos},
year = {2021},
date = {2021-04-29},
booktitle = {EGU21},
address = {Online},
organization = {European Geosciences Union (EGU)},
abstract = {Atmospheric aerosols are an important forcing agent in the estimation of radiative budget, being the Arctic an area of special weakness. The Group of Atmospheric Optics, University of Valladolid and the Alfred Wegener Institute for Polar and Marine Research, installed in 2017 a CE-318T Sun-sky-Moon photometer (Cimel Electronique S.A.S) in the Arctic station Ny-Ålesund (79ºN, 12ºE). This study presents an inventory of all high-turbidity aerosol episodes recorded in the period 2017-2020 (data of level 1.5-validated from AERONET). This inventory is based on the separate analysis of coarse and fine mode aerosol optical depth. Aerosol episodes are attributed to coarse, fine or mixture of aerosols. Complementary information provided by HYSPLIT air mass back trajectories, MODIS images, forecast aerosol models, CALIOP/CALIPSO satellite data, and other collocated instruments on the station are also used. Special focus is given to long-range transport of aerosols from big forest fires in Canada, United States and Russia},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Atmospheric aerosols are an important forcing agent in the estimation of radiative budget, being the Arctic an area of special weakness. The Group of Atmospheric Optics, University of Valladolid and the Alfred Wegener Institute for Polar and Marine Research, installed in 2017 a CE-318T Sun-sky-Moon photometer (Cimel Electronique S.A.S) in the Arctic station Ny-Ålesund (79ºN, 12ºE). This study presents an inventory of all high-turbidity aerosol episodes recorded in the period 2017-2020 (data of level 1.5-validated from AERONET). This inventory is based on the separate analysis of coarse and fine mode aerosol optical depth. Aerosol episodes are attributed to coarse, fine or mixture of aerosols. Complementary information provided by HYSPLIT air mass back trajectories, MODIS images, forecast aerosol models, CALIOP/CALIPSO satellite data, and other collocated instruments on the station are also used. Special focus is given to long-range transport of aerosols from big forest fires in Canada, United States and Russia
S. Herrero-Anta; C. Toledano; R. Román; R. González; C. Rtitter; J.C. Antuña-Sánchez; D. González-Fernández; A. Calle; V.E. Cachorro; A.M. de Frutos
Long range transported aerosol events over Ny-Alesund (Svalbard) in 2020 observed with Sun-Sky-Moon photometry Conference
Arctic Science Summit Week 2021 (ASSW2021), International Arctic Science Committee (IASC) Lisbon, Portugal (online), 2021.
@conference{Herrero-Anta2021,
title = {Long range transported aerosol events over Ny-Alesund (Svalbard) in 2020 observed with Sun-Sky-Moon photometry},
author = {S. Herrero-Anta and C. Toledano and R. Román and R. González and C. Rtitter and J.C. Antuña-Sánchez and D. González-Fernández and A. Calle and V.E. Cachorro and A.M. de Frutos},
year = {2021},
date = {2021-03-26},
booktitle = {Arctic Science Summit Week 2021 (ASSW2021)},
address = {Lisbon, Portugal (online)},
organization = {International Arctic Science Committee (IASC)},
abstract = {The recent development of the of Sun-sky-Moon photometers allows using both Sun and Moon as light sources to retrieve columnar aerosol properties. In this framework, the Group of Atmospheric optics, University of Valladolid and the Alfred Wegener Institute for Polar and Marine Research, installed in 2017 a CE-318T Sun-sky-Moon photometer (Cimel Electronique S.A.S) in the Arctic station Ny-Ålesund (79oN, 12oE). This instrument contributes to the AErosol RObotic NETwork (AERONET), and it is recording a continuous (summer +winter) database of columnar aerosol properties. This study presents an inventory of all high-turbidity aerosol episodes recorded in 2020 based on the mentioned photometer measurements. Complementary information provided by HYSPLIT air mass back trajectories, MODIS images, forecast aerosol models, CALIOP/CALIPSO satellite data, and other collocated instruments on the station are also used. Special focus is given to long-range transport of aerosols from forest fires in Canada, United States and Russia.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
The recent development of the of Sun-sky-Moon photometers allows using both Sun and Moon as light sources to retrieve columnar aerosol properties. In this framework, the Group of Atmospheric optics, University of Valladolid and the Alfred Wegener Institute for Polar and Marine Research, installed in 2017 a CE-318T Sun-sky-Moon photometer (Cimel Electronique S.A.S) in the Arctic station Ny-Ålesund (79oN, 12oE). This instrument contributes to the AErosol RObotic NETwork (AERONET), and it is recording a continuous (summer +winter) database of columnar aerosol properties. This study presents an inventory of all high-turbidity aerosol episodes recorded in 2020 based on the mentioned photometer measurements. Complementary information provided by HYSPLIT air mass back trajectories, MODIS images, forecast aerosol models, CALIOP/CALIPSO satellite data, and other collocated instruments on the station are also used. Special focus is given to long-range transport of aerosols from forest fires in Canada, United States and Russia.
R. González; C. Toledano; R. Román; D. Mateos; E. Asmi; E. Rodríguez; J.C. Antuña-Sánchez; S. Herrero-Anta; V.E. Cachorro; A. Calle; A.M. de Frutos
Monitoring of long-range transported smoke in polar regions with remote sensing instruments Conference
Arctic Science Summit Week 2021 (ASSW2021), International Arctic Science Committee (IASC) Lisbon, Portugal (online), 2021.
@conference{González2021b,
title = {Monitoring of long-range transported smoke in polar regions with remote sensing instruments},
author = {R. González and C. Toledano and R. Román and D. Mateos and E. Asmi and E. Rodríguez and J.C. Antuña-Sánchez and S. Herrero-Anta and V.E. Cachorro and A. Calle and A.M. de Frutos},
year = {2021},
date = {2021-03-26},
booktitle = {Arctic Science Summit Week 2021 (ASSW2021)},
address = {Lisbon, Portugal (online)},
organization = {International Arctic Science Committee (IASC)},
abstract = {Long range transported aerosol from biomass burning affects polar regions, especially the Arctic. The frequency and intensity of bushfires in the context of a warming climate has been pointed out in the last report of the Intergovernmental Panel on Climate Change. In high latitudes, these events impact large areas through long-range transport of the smoke particles in the troposphere or even the stratosphere. The lifetime and radiative impact are related with the height of the plumes and the processes that modify particle size and absorptive properties during the transport. Several recent publications have shown the impact of the Australian smoke in the southern hemisphere, including Antarctica, in January-March 2020. The tools that were used to monitor that extraordinary event can be used in the Arctic to investigate similar effects in the frequent biomass burning events that generate smoke plumes in boreal regions. In this work, we present the results derived from ground-based instrumentation as well as satellite and model data. The change of the smoke properties after several days of transport is also provided, namely an increase in the fine mode particle size and the single
scattering albedo, as well as a decrease in the coarse mode particle concentration. These features are relevant for radiative forcing calculations and therefore the impact of long range transported smoke in the radiative balance over polar regions.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Long range transported aerosol from biomass burning affects polar regions, especially the Arctic. The frequency and intensity of bushfires in the context of a warming climate has been pointed out in the last report of the Intergovernmental Panel on Climate Change. In high latitudes, these events impact large areas through long-range transport of the smoke particles in the troposphere or even the stratosphere. The lifetime and radiative impact are related with the height of the plumes and the processes that modify particle size and absorptive properties during the transport. Several recent publications have shown the impact of the Australian smoke in the southern hemisphere, including Antarctica, in January-March 2020. The tools that were used to monitor that extraordinary event can be used in the Arctic to investigate similar effects in the frequent biomass burning events that generate smoke plumes in boreal regions. In this work, we present the results derived from ground-based instrumentation as well as satellite and model data. The change of the smoke properties after several days of transport is also provided, namely an increase in the fine mode particle size and the single
scattering albedo, as well as a decrease in the coarse mode particle concentration. These features are relevant for radiative forcing calculations and therefore the impact of long range transported smoke in the radiative balance over polar regions.
scattering albedo, as well as a decrease in the coarse mode particle concentration. These features are relevant for radiative forcing calculations and therefore the impact of long range transported smoke in the radiative balance over polar regions.
J C Antuña-Sánchez; R Román; V E Cachorro; C Toledano; C López; R González; D Mateos; A Calle; Á M de Frutos
Relative sky radiance from multi-exposure all-sky camera images Journal Article
In: Atmospheric Measurement Techniques, vol. 14, no. 3, pp. 2201–2217, 2021.
@article{amt-14-2201-2021,
title = {Relative sky radiance from multi-exposure all-sky camera images},
author = {J C Antuña-Sánchez and R Román and V E Cachorro and C Toledano and C López and R González and D Mateos and A Calle and Á M de Frutos},
url = {https://amt.copernicus.org/articles/14/2201/2021/},
doi = {10.5194/amt-14-2201-2021},
year = {2021},
date = {2021-03-22},
journal = {Atmospheric Measurement Techniques},
volume = {14},
number = {3},
pages = {2201--2217},
abstract = {All-sky cameras are frequently used to detect cloud cover; however, this work explores the use of these instruments for the more complex purpose of extracting relative sky radiances. An all-sky camera (SONA202-NF model) with three colour filters narrower than usual for this kind of cameras is configured to capture raw images at seven exposure times. A detailed camera characterization of the black level, readout noise, hot pixels and linear response is carried out. A methodology is proposed to obtain a linear high dynamic range (HDR) image and its uncertainty, which represents the relative sky radiance (in arbitrary units) maps at three effective wavelengths. The relative sky radiances are extracted from these maps and normalized by dividing every radiance of one channel by the sum of all radiances at this channel. Then, the normalized radiances are compared with the sky radiance measured at different sky points by a sun and sky photometer belonging to the Aerosol Robotic Network (AERONET). The camera radiances correlate with photometer ones except for scattering angles below 10?, which is probably due to some light reflections on the fisheye lens and camera dome. Camera and photometer wavelengths are not coincident; hence, camera radiances are also compared with sky radiances simulated by a radiative transfer model at the same camera effective wavelengths. This comparison reveals an uncertainty on the normalized camera radiances of about 3.3?%, 4.3?% and 5.3?% for 467, 536 and 605?nm, respectively, if specific quality criteria are applied.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
All-sky cameras are frequently used to detect cloud cover; however, this work explores the use of these instruments for the more complex purpose of extracting relative sky radiances. An all-sky camera (SONA202-NF model) with three colour filters narrower than usual for this kind of cameras is configured to capture raw images at seven exposure times. A detailed camera characterization of the black level, readout noise, hot pixels and linear response is carried out. A methodology is proposed to obtain a linear high dynamic range (HDR) image and its uncertainty, which represents the relative sky radiance (in arbitrary units) maps at three effective wavelengths. The relative sky radiances are extracted from these maps and normalized by dividing every radiance of one channel by the sum of all radiances at this channel. Then, the normalized radiances are compared with the sky radiance measured at different sky points by a sun and sky photometer belonging to the Aerosol Robotic Network (AERONET). The camera radiances correlate with photometer ones except for scattering angles below 10?, which is probably due to some light reflections on the fisheye lens and camera dome. Camera and photometer wavelengths are not coincident; hence, camera radiances are also compared with sky radiances simulated by a radiative transfer model at the same camera effective wavelengths. This comparison reveals an uncertainty on the normalized camera radiances of about 3.3?%, 4.3?% and 5.3?% for 467, 536 and 605?nm, respectively, if specific quality criteria are applied.
Juan Carlos Antuña-Sánchez; René Estevan; Roberto Román; Juan Carlos Antuña-Marrero; Victoria E Cachorro; Albeth Rodríguez Vega; Ángel M de Frutos
Solar Radiation Climatology in Camagüey, Cuba (1981–2016) Journal Article
In: Remote Sensing, vol. 13, no. 2, 2021, ISSN: 2072-4292.
@article{rs13020169,
title = {Solar Radiation Climatology in Camagüey, Cuba (1981–2016)},
author = {Juan Carlos Antuña-Sánchez and René Estevan and Roberto Román and Juan Carlos Antuña-Marrero and Victoria E Cachorro and Albeth Rodríguez Vega and Ángel M de Frutos},
url = {https://www.mdpi.com/2072-4292/13/2/169},
doi = {10.3390/rs13020169},
issn = {2072-4292},
year = {2021},
date = {2021-01-01},
journal = {Remote Sensing},
volume = {13},
number = {2},
abstract = {The transition to renewable energies is an unavoidable step to guarantee a peaceful and sustainable future for humankind. Although solar radiation is one of the main sources of renewable energy, there are broad regions of the planet where it has not been characterized appropriately to provide the necessary information for regional and local planning and design of the different solar powered systems. The Caribbean, and Cuba in particular, lacked until very recently at least one long-term series of surface solar radiation measurements. Here we present the first long-term records of solar radiation for this region. Solar radiation measurements manually conducted and recorded on paper were rescued, reprocessed and quality controlled to develop the solar radiation climatology at the Actinometrical Station of Camagüey, in Cuba (21.422°N; 77.850°W; 122 m a.s.l.) for the period 1981-2016. The diurnal cycle based on the average hourly values of the global, direct and diffuse horizontal variables for the entire period have been determined and analyzed showing the dependence on solar zenith angle (SZA) and clouds. The annual cycle of global solar component given by the mean monthly daily values presents two maxima, one in April and another one in July with values of 5.06 and 4.91 kWh m−2, respectively (18.23 and 17.67 MJ m−2 per day for insolation), and the minimum in December (3.15 kWh m−2 or 11.33 MJ m−2). The maxima are governed by the direct solar components and are modulated by cloudiness. Both, diurnal and annual cycles of the diffuse solar component show a smoothed bell shaped behavior. In general solar radiation at this station presents a strong influence of clouds, with little seasonal variation but with higher values during the rainy season. Daily global radiation annual averages showed its maximum value in the year 1983, with 17.45 MJ m−2 explained by very low cloudiness this year, and the minimum value was reported in 2009 with a value of 12.43 MJ m−2 that could not explained by the cloud coverage or the aerosols optical depths registered that year. The effects of the 1982 El Chichón and 1991 Mount Pinatubo volcanic eruptions on the solar radiation variables at Camagüey are also shown and discussed. The results achieved in this study shown the characteristics of solar radiation in this area and their potential for solar power applications.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The transition to renewable energies is an unavoidable step to guarantee a peaceful and sustainable future for humankind. Although solar radiation is one of the main sources of renewable energy, there are broad regions of the planet where it has not been characterized appropriately to provide the necessary information for regional and local planning and design of the different solar powered systems. The Caribbean, and Cuba in particular, lacked until very recently at least one long-term series of surface solar radiation measurements. Here we present the first long-term records of solar radiation for this region. Solar radiation measurements manually conducted and recorded on paper were rescued, reprocessed and quality controlled to develop the solar radiation climatology at the Actinometrical Station of Camagüey, in Cuba (21.422°N; 77.850°W; 122 m a.s.l.) for the period 1981–2016. The diurnal cycle based on the average hourly values of the global, direct and diffuse horizontal variables for the entire period have been determined and analyzed showing the dependence on solar zenith angle (SZA) and clouds. The annual cycle of global solar component given by the mean monthly daily values presents two maxima, one in April and another one in July with values of 5.06 and 4.91 kWh m−2, respectively (18.23 and 17.67 MJ m−2 per day for insolation), and the minimum in December (3.15 kWh m−2 or 11.33 MJ m−2). The maxima are governed by the direct solar components and are modulated by cloudiness. Both, diurnal and annual cycles of the diffuse solar component show a smoothed bell shaped behavior. In general solar radiation at this station presents a strong influence of clouds, with little seasonal variation but with higher values during the rainy season. Daily global radiation annual averages showed its maximum value in the year 1983, with 17.45 MJ m−2 explained by very low cloudiness this year, and the minimum value was reported in 2009 with a value of 12.43 MJ m−2 that could not explained by the cloud coverage or the aerosols optical depths registered that year. The effects of the 1982 El Chichón and 1991 Mount Pinatubo volcanic eruptions on the solar radiation variables at Camagüey are also shown and discussed. The results achieved in this study shown the characteristics of solar radiation in this area and their potential for solar power applications.
2020
Ramiro González; Carlos Toledano; Roberto Román; David Fuertes; Alberto Berjón; David Mateos; Carmen Guirado-Fuentes; Cristian Velasco-Merino; Juan Carlos Antuña-Sánchez; Abel Calle; Victoria E. Cachorro; Angel M. de Frutos
Daytime and nighttime aerosol optical depth implementation in CÆLIS Journal Article
In: Geoscientific Instrumentation, Methods and Data Systems, vol. 9, no. 2, pp. 417–433, 2020.
@article{gonzalez2020daytime,
title = {Daytime and nighttime aerosol optical depth implementation in CÆLIS},
author = {Ramiro González and Carlos Toledano and Roberto Román and David Fuertes and Alberto Berjón and David Mateos and Carmen Guirado-Fuentes and Cristian Velasco-Merino and Juan Carlos Antuña-Sánchez and Abel Calle and Victoria E. Cachorro and Angel M. de Frutos},
doi = {10.5194/gi-9-417-2020},
year = {2020},
date = {2020-01-01},
urldate = {2020-01-01},
journal = {Geoscientific Instrumentation, Methods and Data Systems},
volume = {9},
number = {2},
pages = {417--433},
publisher = {Copernicus GmbH},
keywords = {},
pubstate = {published},
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}
Ramiro González; Carlos Toledano; Roberto Román; David Mateos; Eija Asmi; Edith Rodríguez; Ian C Lau; Jonathan Ferrara; Raúl D’Elia; Juan Carlos Antuña-Sánchez; Victoria E Cachorro; Abel Calle; Ángel M de Frutos
Characterization of Stratospheric Smoke Particles over the Antarctica by Remote Sensing Instruments Journal Article
In: Remote Sensing, vol. 12, no. 22, 2020, ISSN: 2072-4292.
@article{rs12223769,
title = {Characterization of Stratospheric Smoke Particles over the Antarctica by Remote Sensing Instruments},
author = {Ramiro González and Carlos Toledano and Roberto Román and David Mateos and Eija Asmi and Edith Rodríguez and Ian C Lau and Jonathan Ferrara and Raúl D’Elia and Juan Carlos Antuña-Sánchez and Victoria E Cachorro and Abel Calle and Ángel M de Frutos},
url = {https://www.mdpi.com/2072-4292/12/22/3769},
doi = {10.3390/rs12223769},
issn = {2072-4292},
year = {2020},
date = {2020-01-01},
journal = {Remote Sensing},
volume = {12},
number = {22},
abstract = {Australian smoke from the extraordinary biomass burning in December 2019 was observed over Marambio, Antarctica from the 7th to the 10th January, 2020. The smoke plume was transported thousands of kilometers over the Pacific Ocean, and reached the Antarctic Peninsula at a hight of 13 km, as determined by satellite lidar observations. The proposed origin and trajectory of the aerosol are supported by back-trajectory model analyses. Ground-based Sun-Sky-Moon photometer belonging to the Aerosol Robotic Network (AERONET) measured aerosol optical depth (500 nm wavelength) above 0.3, which is unprecedented for the site. Inversion of sky radiances provide the optical and microphysical properties of the smoke over Marambio. The AERONET data near the fire origin in Tumbarumba, Australia, was used to investigate the changes in the measured aerosol properties after transport and ageing. The analysis shows an increase in the fine mode particle radius and a reduction in absorption (increase in the single scattering albedo). The available long-term AOD data series at Marambio suggests that smoke particles could have remained over Antarctica for several weeks after the analyzed event.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Australian smoke from the extraordinary biomass burning in December 2019 was observed over Marambio, Antarctica from the 7th to the 10th January, 2020. The smoke plume was transported thousands of kilometers over the Pacific Ocean, and reached the Antarctic Peninsula at a hight of 13 km, as determined by satellite lidar observations. The proposed origin and trajectory of the aerosol are supported by back-trajectory model analyses. Ground-based Sun–Sky–Moon photometer belonging to the Aerosol Robotic Network (AERONET) measured aerosol optical depth (500 nm wavelength) above 0.3, which is unprecedented for the site. Inversion of sky radiances provide the optical and microphysical properties of the smoke over Marambio. The AERONET data near the fire origin in Tumbarumba, Australia, was used to investigate the changes in the measured aerosol properties after transport and ageing. The analysis shows an increase in the fine mode particle radius and a reduction in absorption (increase in the single scattering albedo). The available long-term AOD data series at Marambio suggests that smoke particles could have remained over Antarctica for several weeks after the analyzed event.
2019
R. Román; J.C. Antuña-Sánchez; J. Vaquero-Martínez; R. González; C. Velasco-Merino; P. Martín; M. Antón; C. Toledano; V.E. Cachorro; A. Calle; A de Frutos
Vapor de agua y cubierta de nubes sobre las zonas polares a través del instrumento AIRS Conference
XVIII Congreso de la Asociación Española de Teledetección, Asociación Española de Teledetección Valladolid, Spain, 2019.
@conference{Román2019b,
title = {Vapor de agua y cubierta de nubes sobre las zonas polares a través del instrumento AIRS},
author = {R. Román and J.C. Antuña-Sánchez and J. Vaquero-Martínez and R. González and C. Velasco-Merino and P. Martín and M. Antón and C. Toledano and V.E. Cachorro and A. Calle; A de Frutos},
year = {2019},
date = {2019-09-24},
booktitle = {XVIII Congreso de la Asociación Española de Teledetección},
address = {Valladolid, Spain},
organization = {Asociación Española de Teledetección},
keywords = {},
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}
D. Mateos; R. González; D. Fuertes; C. Velasco-Merino; J.C. Antuña-Sánchez; R. Román; P. Martín; C. Toledano; V.E. Cachorro; A. Calle; A.M. de Frutos
Distribución espacial de propiedades del aerosol mediante el software CAELIS Conference
XVIII Congreso de la Asociación Española de Teledetección, Asociación Española de Teledetección Valladolid, Spain, 2019.
@conference{Mateos2019,
title = {Distribución espacial de propiedades del aerosol mediante el software CAELIS},
author = {D. Mateos and R. González and D. Fuertes and C. Velasco-Merino and J.C. Antuña-Sánchez and R. Román and P. Martín and C. Toledano and V.E. Cachorro and A. Calle and A.M. de Frutos},
year = {2019},
date = {2019-09-24},
booktitle = {XVIII Congreso de la Asociación Española de Teledetección},
address = {Valladolid, Spain},
organization = {Asociación Española de Teledetección},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
C. Velasco-Merino; D. Mateos; C. Toledano; V.E; Cachorro; R. González; S. Blindheim; M. Gausa; S. Mogo; C. Guirado; R. Román; J.C. Antuña; M. Herreras; A. Calle; A.M. de Frutos
Aerosol radiative properties in a pristine subartic area using long-term columnar records Conference
7th Iberian Meeting on Aerosol Science and Technology (RICTA'19) Lisbon, Portugal, 2019.
@conference{Velasco-Merino2019,
title = {Aerosol radiative properties in a pristine subartic area using long-term columnar records},
author = {C. Velasco-Merino and D. Mateos and C. Toledano; V.E and Cachorro and R. González and S. Blindheim and M. Gausa and S. Mogo and C. Guirado and R. Román and J.C. Antuña and M. Herreras and A. Calle and A.M. de Frutos},
year = {2019},
date = {2019-07-09},
address = {Lisbon, Portugal},
organization = {7th Iberian Meeting on Aerosol Science and Technology (RICTA'19)},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
R. Román; A. Barreto; D. Pérez-Ramírez; R. González; J.A. Benavent-Oltra; C. Toledano; M. Herreras; J.C. Antuña; C. Velasco-Merino; D. Mateos; V.E. Cachorro; F.J. Olmo; E. Cuevas; L. Alados-Arboledas; A.M. de Frutos
Improvements on lunar photometry: comparison with star photometer measurements Conference
7th Iberian Meeting on Aerosol Science and Technology (RICTA'19) Lisbon, Portugal, 2019.
@conference{Román2019,
title = {Improvements on lunar photometry: comparison with star photometer measurements},
author = {R. Román and A. Barreto and D. Pérez-Ramírez and R. González and J.A. Benavent-Oltra and C. Toledano and M. Herreras and J.C. Antuña and C. Velasco-Merino and D. Mateos and V.E. Cachorro and F.J. Olmo and E. Cuevas and L. Alados-Arboledas and A.M. de Frutos},
year = {2019},
date = {2019-07-09},
address = {Lisbon, Portugal},
organization = {7th Iberian Meeting on Aerosol Science and Technology (RICTA'19)},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
D. Mateos; C. Toledano; R. Román; C. Velasco-Merino; R. González; J.C. Antuña; C. Guirado; C. Ritter; V.E. Cachorro; A. Calle; A.M. De Frutos
Columnar aerosol properties in the Arctic: emphasis in nocturnal photometry Conference
The SSC16 conference, Scandinavian Symposium on Chemometrics Oslo, Norway, 2019.
@conference{Mateos2019b,
title = {Columnar aerosol properties in the Arctic: emphasis in nocturnal photometry},
author = {D. Mateos and C. Toledano and R. Román and C. Velasco-Merino and R. González and J.C. Antuña and C. Guirado and C. Ritter and V.E. Cachorro and A. Calle and A.M. De Frutos},
year = {2019},
date = {2019-06-17},
booktitle = {The SSC16 conference},
address = {Oslo, Norway},
organization = {Scandinavian Symposium on Chemometrics},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
A. Barreto; R. Román; E. Cuevas; D. Pérez-Ramírez; A.J. Berjón; N. Kouremeti; S. Kazadzis; J. Gröbner; M. Mazzola; C. Toledano; J.A. Benavent-Oltra; L. Doppler; J. Juryšek; A.F. Almansa; S. Victori; F. Maupin; C. Guirado-Fuentes; R. González; V. Vitale; P. Goloub; L. Blarel; L. Alados-Arboledas; E. Woolliams; S. Taylor; J.C. Antuña; M. Yela
In: Atmospheric Environment, vol. 202, pp. 190-211, 2019, ISSN: 1352-2310.
@article{BARRETO2019,
title = {Evaluation of night-time aerosols measurements and lunar irradiance models in the frame of the first multi-instrument nocturnal intercomparison campaign.},
author = {A. Barreto and R. Román and E. Cuevas and D. Pérez-Ramírez and A.J. Berjón and N. Kouremeti and S. Kazadzis and J. Gröbner and M. Mazzola and C. Toledano and J.A. Benavent-Oltra and L. Doppler and J. Juryšek and A.F. Almansa and S. Victori and F. Maupin and C. Guirado-Fuentes and R. González and V. Vitale and P. Goloub and L. Blarel and L. Alados-Arboledas and E. Woolliams and S. Taylor and J.C. Antuña and M. Yela},
url = {http://www.sciencedirect.com/science/article/pii/S1352231019300287},
doi = {https://doi.org/10.1016/j.atmosenv.2019.01.006},
issn = {1352-2310},
year = {2019},
date = {2019-01-30},
journal = {Atmospheric Environment},
volume = {202},
pages = {190-211},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
K Chance; X Liu; Chan C Miller; González G Abad; G Huang; C Nowlan; A Souri; R Suleiman; K Sun; H Wang; L Zhu; P Zoogman; J Al-Saadi; J -C Antuña-Marrero; J Carr; R Chatfield; M Chin; R Cohen; D Edwards; J Fishman; D Flittner; J Geddes; M Grutter; J R Herman; D J Jacob; S Janz; J Joiner; J Kim; N A Krotkov; B Lefer; R V Martin; O L Mayol-Bracero; A Naeger; M Newchurch; G G Pfister; K Pickering; R B Pierce; Rivera C Cárdenas; A Saiz-Lopez; W Simpson; E Spinei; R J D Spurr; J J Szykman; O Torres; J Wang
TEMPO Green Paper: Chemistry, physics, and meteorology experiments with the Tropospheric Emissions: monitoring of pollution instrument Proceedings Article
In: Steven P Neeck; Philippe Martimort; Toshiyoshi Kimura (Ed.): Sensors, Systems, and Next-Generation Satellites XXIII, pp. 56 – 67, International Society for Optics and Photonics SPIE, 2019.
@inproceedings{10.1117/12.2534883,
title = {TEMPO Green Paper: Chemistry, physics, and meteorology experiments with the Tropospheric Emissions: monitoring of pollution instrument},
author = {K Chance and X Liu and Chan C Miller and González G Abad and G Huang and C Nowlan and A Souri and R Suleiman and K Sun and H Wang and L Zhu and P Zoogman and J Al-Saadi and J -C Antuña-Marrero and J Carr and R Chatfield and M Chin and R Cohen and D Edwards and J Fishman and D Flittner and J Geddes and M Grutter and J R Herman and D J Jacob and S Janz and J Joiner and J Kim and N A Krotkov and B Lefer and R V Martin and O L Mayol-Bracero and A Naeger and M Newchurch and G G Pfister and K Pickering and R B Pierce and Rivera C Cárdenas and A Saiz-Lopez and W Simpson and E Spinei and R J D Spurr and J J Szykman and O Torres and J Wang},
editor = {Steven P Neeck and Philippe Martimort and Toshiyoshi Kimura},
url = {https://doi.org/10.1117/12.2534883},
doi = {10.1117/12.2534883},
year = {2019},
date = {2019-01-01},
booktitle = {Sensors, Systems, and Next-Generation Satellites XXIII},
volume = {11151},
pages = {56 -- 67},
publisher = {SPIE},
organization = {International Society for Optics and Photonics},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
2018
D. Mateos; V. E. Cachorro; S. Mogo; C. Toledano; C. Velasco-Merino; R. González; A. Berjón; C. Guirado; R. Román; J. C. Antuña; M. Herreras; E. Rodríguez; E. Asmi; A. Calle; A. M. de Frutos
Research on aerosols, clouds, and water vapour in Polar Regions Conference
10th Portuguese Conference on Polar Sciences , University of Aveiro Portugal, 2018.
@conference{MateosPolarPort2019,
title = {Research on aerosols, clouds, and water vapour in Polar Regions },
author = {D. Mateos and V. E. Cachorro and S. Mogo and C. Toledano and C. Velasco-Merino and R. González and A. Berjón and C. Guirado and R. Román and J. C. Antuña and M. Herreras and E. Rodríguez and E. Asmi and A. Calle and A. M. de Frutos
},
year = {2018},
date = {2018-10-25},
booktitle = {10th Portuguese Conference on Polar Sciences },
address = {Portugal},
organization = {University of Aveiro},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Cachorro, Victoria; Mateos, David; Toledano, Carlos; Velasco-Merino, Cristian; González, Ramiro; Berjón, Alberto; Guirado, Carmen; Román, Roberto; Antuña, Juan Carlos; Herreras, Marcos; Calle, Abel; de Frutos, Ángel Máximo
Observación atmosférica en zonas polares llevada a cabo por el grupo GOA-Uva Conference
SCAR, CSIC, IGME Madrid, Spain, 2018, (IX Simposio Español de Estudios Polares).
@conference{Cachorro2018,
title = {Observación atmosférica en zonas polares llevada a cabo por el grupo GOA-Uva},
author = {Cachorro, Victoria and Mateos, David and Toledano, Carlos and Velasco-Merino, Cristian and González, Ramiro and Berjón, Alberto and Guirado, Carmen and Román, Roberto and Antuña, Juan Carlos and Herreras, Marcos and Calle, Abel and de Frutos, Ángel Máximo},
year = {2018},
date = {2018-09-06},
address = {Madrid, Spain},
organization = {SCAR, CSIC, IGME},
note = {IX Simposio Español de Estudios Polares},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
A. Calle; D. Mateos; V.E. Cachorro; C. Toledano; C. Velasco-Merino; A. López; R. González; A. de Frutos; J.C. Antuña; R. Román
Aerosol optical depth characterization in middle and polar latitudes Conference
International Geoscience and Remote Sensing Symposium (IGARSS) Valencia, Spain, 2018.
@conference{Calle2018,
title = {Aerosol optical depth characterization in middle and polar latitudes},
author = {A. Calle and D. Mateos and V.E. Cachorro and C. Toledano and C. Velasco-Merino and A. López and R. González and A. de Frutos and J.C. Antuña and R. Román},
year = {2018},
date = {2018-07-22},
address = {Valencia, Spain},
organization = {International Geoscience and Remote Sensing Symposium (IGARSS)},
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}
C. Velasco-Merino, D. Mateos, M. Herreras, C. Toledano, A. Calle, R. González, A. Berjón, C. Guirado, R. Román, J. C. Antuña, V. E. Cachorro,; A. M. de Frutos
Radiometric and photometric measurements (solar and lunar) in the A-LIFE field campaign in Cyprus Conference
UNIVERSIDAD DEL PAIS VASCO 2018, (REUNIÓN IBÉRICA DE CIENCIA Y TECNOLOGÍA DE AEROSOLES).
@conference{Velasco-Merino2018,
title = {Radiometric and photometric measurements (solar and lunar) in the A-LIFE field campaign in Cyprus},
author = {C. Velasco-Merino, D. Mateos, M. Herreras, C. Toledano, A. Calle, R. González, A. Berjón, C. Guirado, R. Román, J. C. Antuña, V. E. Cachorro, and A. M. de Frutos},
year = {2018},
date = {2018-06-20},
organization = {UNIVERSIDAD DEL PAIS VASCO },
note = {REUNIÓN IBÉRICA DE CIENCIA Y TECNOLOGÍA DE AEROSOLES},
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J. C. Antuña-Sánchez; R. Román; V. E. Cachorro; A. M. de Frutos; J. C. Antuña-Marrero; A. Rodríguez; R. Estevan; C. Toledano
Comparison between the SSolar_GOA model and a 35-year solar radiation series at Camagüey. Conference
Bilbao, Spain, 2018, (Iberian Meeting on Aerosol Science and Technology ).
@conference{Antuña-Sánchez2018b,
title = {Comparison between the SSolar_GOA model and a 35-year solar radiation series at Camagüey.},
author = {J. C. Antuña-Sánchez and R. Román and V. E. Cachorro and A. M. de Frutos and J. C. Antuña-Marrero and A. Rodríguez and R. Estevan and C. Toledano
},
year = {2018},
date = {2018-06-20},
address = {Bilbao, Spain},
note = {Iberian Meeting on Aerosol Science and Technology
},
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M. Herreras; D. Mateos; C. Velasco-Merino; C. Toledano; A. Calle; R. González; C. Guirado; R. Román; J. C. Antuña; V.E. Cachorro; A.M. de Frutos
UPV and UNED Bilbao, Spain, 2018.
@conference{Herreras2018c,
title = {Characterization of Saharan and Arabian dust episodes by sun photometry in the A-LIFE field experiment in Cyprus },
author = {M. Herreras and D. Mateos and C. Velasco-Merino and C. Toledano and A. Calle and R. González and C. Guirado and R. Román and J. C. Antuña and V.E. Cachorro and A.M. de Frutos},
url = {RICTA 2018},
year = {2018},
date = {2018-06-20},
address = {Bilbao, Spain},
organization = {UPV and UNED},
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D. Mateos; V. E. Cachorro; C. Toledano; C. Velasco-Merino; R. González; A. Berjón; C. Guirado; R. Román; J. C. Antuña; M. Herreras; A. Calle; A. M. de Frutos
Atmospheric observation in Polar Regions carried out by GOA-UVa Conference
6th Iberian Meeting on Aerosol Science and Technology (RICTA2018), University of the Basque Country (UPV/EHU) Bilbao, Spain, 2018.
@conference{MateosRicta2018,
title = {Atmospheric observation in Polar Regions carried out by GOA-UVa},
author = {D. Mateos and V. E. Cachorro and C. Toledano and C. Velasco-Merino and R. González and A. Berjón and C. Guirado and R. Román and J. C. Antuña and M. Herreras and A. Calle and A. M. de Frutos},
year = {2018},
date = {2018-06-20},
booktitle = {6th Iberian Meeting on Aerosol Science and Technology (RICTA2018)},
address = {Bilbao, Spain},
organization = {University of the Basque Country (UPV/EHU)},
keywords = {},
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J. C. Antuña-Sánchez; R. Estevan; J. C. Antuña-Marrero; V. E. Cachorro; R. Román; A. M. de Frutos; A. Rodríguez; F. García; C. Toledano
Climatology of solar radiation in the actinometrical station of Camagüey, Cuba, 1981-2016. Conference
La Habana, Cuba, 2018, (International Conference on the Management of Energy, Climate and Air for a Sustainable Society ).
@conference{Antuña-Sánchez2018,
title = {Climatology of solar radiation in the actinometrical station of Camagüey, Cuba, 1981-2016.},
author = {J. C. Antuña-Sánchez and R. Estevan and J. C. Antuña-Marrero and V. E. Cachorro and R. Román and A. M. de Frutos and A. Rodríguez and F. García and C. Toledano
},
year = {2018},
date = {2018-04-07},
address = {La Habana, Cuba},
note = {International Conference on the Management of Energy, Climate and Air for a Sustainable Society
},
keywords = {},
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Juan Carlos Antuña-Marrero; Ángel de Frutos Barajas; Albeth Rodríguez Vega; Victoria Cachorro Revilla; René Estevan Arredondo; Frank García Parrado; Juan Ricardo Lachicott; Juan Carlos Antuña-Sánchez
Data rescue and calibration facilities to support sustainable scientific research on solar radiation in Cuba. Conference
La Habana, Cuba, 2018, (International Conference on the Management of Energy, Climate and Air for a Sustainable Society ).
@conference{Antuña-Marrero2018b,
title = {Data rescue and calibration facilities to support sustainable scientific research on solar radiation in Cuba.},
author = {Juan Carlos Antuña-Marrero and Ángel de Frutos Barajas and Albeth Rodríguez Vega and Victoria Cachorro Revilla and René Estevan Arredondo and Frank García Parrado and Juan Ricardo Lachicott and Juan Carlos Antuña-Sánchez
},
year = {2018},
date = {2018-04-07},
address = {La Habana, Cuba},
note = {International Conference on the Management of Energy, Climate and Air for a Sustainable Society
},
keywords = {},
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tppubtype = {conference}
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Calle, A. ;Cachorro, V.E. ;Toledano, C. ;Velasco, C. ;Benito, A. ;González, R. ;de Frutos, A.M. ;Antuña-Sánchez, J.C. ;Román, R.
Aerosol optical depth characterization in middle and polar latitudes Proceedings Article
In: IGARSS 2018-2018 IEEE International Geoscience and Remote Sensing Symposium. , pp. 9138 - 9140, 2018, ISBN: 978-1-5386-7150-4.
@inproceedings{CalleIGARSS2018,
title = {Aerosol optical depth characterization in middle and polar latitudes},
author = {Calle, A. ;Cachorro, V.E. ;Toledano, C. ;Velasco, C. ;Benito, A. ;González, R. ;de Frutos, A.M. ;Antuña-Sánchez, J.C. ;Román, R.},
isbn = {978-1-5386-7150-4},
year = {2018},
date = {2018-01-01},
booktitle = {IGARSS 2018-2018 IEEE International Geoscience and Remote Sensing Symposium. },
volume = {18},
pages = {9138 - 9140},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
2017
D. Mateos, V. Cachorro, M.A. Burgos, Y.S. Bennouna, C. Toledano, R. González, C. Velasco-Merino, J.C. Antuña-Sánchez, M. Herreras, S. Retuerto, C. Oraá, S.M. Goizueta, A. Calle, A.M. de Frutos
Universitat Politècnica de Catalunya Barcelona, Spain, 2017, (44th Annual European Meeting on Atmospheric Studies by Optical Methods).
@conference{Mateos2017b,
title = {Columnar and surface aerosol relationships in the background environment of Castile and León region (North-central Spain)},
author = {D. Mateos, V. Cachorro, M.A. Burgos, Y.S. Bennouna, C. Toledano, R. González, C. Velasco-Merino, J.C. Antuña-Sánchez, M. Herreras, S. Retuerto, C. Oraá, S.M. Goizueta, A. Calle, A.M. de Frutos},
url = {https://atmosopt2017.upc.edu/en/abstract-submission/44AM_Abstracts_1sep2017.pdf},
year = {2017},
date = {2017-09-04},
address = {Barcelona, Spain},
organization = {Universitat Politècnica de Catalunya},
note = {44th Annual European Meeting on Atmospheric Studies by Optical Methods},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
2016
J. C. Antuña-Sánchez; A. Rodríguez; R. Estevan; J. C. Antuña-Marrero
Website for meteorological data on COCONet Camaguey station Conference
Punta Cana, Dominican Republic, 2016, (COCONet Workshop Results, Sustainability, & Capacity Building ).
@conference{Antuña-Sánchez2016,
title = {Website for meteorological data on COCONet Camaguey station},
author = {J. C. Antuña-Sánchez and A. Rodríguez and R. Estevan and J. C. Antuña-Marrero
},
year = {2016},
date = {2016-05-06},
address = {Punta Cana, Dominican Republic},
note = {COCONet Workshop Results, Sustainability, & Capacity Building
},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
J. C. Antuña-Sánchez; V. Cachorro; J. C. Antuña-Marrero; A. M. de Frutos
The highest Saharan dust event ever measured at Valladolid, Spain, seen by the RaspCloud camera Conference
Santas, Brasil, 2016, (IX Taller de Mediciones con Lidar en Latinoamérica (WLMLA) ).
@conference{Antuña-Sánchez2016b,
title = {The highest Saharan dust event ever measured at Valladolid, Spain, seen by the RaspCloud camera},
author = {J. C. Antuña-Sánchez and V. Cachorro and J. C. Antuña-Marrero and A. M. de Frutos
},
year = {2016},
date = {2016-04-17},
address = {Santas, Brasil},
note = {IX Taller de Mediciones con Lidar en Latinoamérica (WLMLA)
},
keywords = {},
pubstate = {published},
tppubtype = {conference}
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2015
García F.; Estevan R.; Antuña-Marrero J.; Rosas J.; Platero I.; Antuña-Sánchez J.; Díaz N.
Determination of the Broadband Aerosol Optical Depth baseline and comparison with sunphotometer data Journal Article
In: Optica Pura y Aplicada, vol. 48, pp. 249 - 258, 2015, ISBN: 00303917.
@article{F.2015,
title = {Determination of the Broadband Aerosol Optical Depth baseline and comparison with sunphotometer data},
author = {García F. and Estevan R. and Antuña-Marrero J. and Rosas J. and Platero I. and Antuña-Sánchez J. and Díaz N.},
isbn = {00303917},
year = {2015},
date = {2015-11-06},
journal = {Optica Pura y Aplicada},
volume = {48},
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N. Díaz; R. Estevan; J. C. Antuña; J. C. Antuña S.; A. Rodríguez; I. Y. Platero; J. Rosas; F. García
Angular Response Calibration System for Solar Radiation Instruments coupled to a Digital Galvanometer Conference
Cayo Coco, Cuba, 2015, (VIII Taller de Mediciones con Lidar en Latinoamérica (WLMLA) ).
@conference{Díaz2015,
title = {Angular Response Calibration System for Solar Radiation Instruments coupled to a Digital Galvanometer},
author = {N. Díaz and R. Estevan and J. C. Antuña and J. C. Antuña S. and A. Rodríguez and I. Y. Platero and J. Rosas and F. García
},
year = {2015},
date = {2015-04-14},
address = {Cayo Coco, Cuba},
note = {VIII Taller de Mediciones con Lidar en Latinoamérica (WLMLA)
},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
F. García; R. Estevan; J. C. Antuña; J. Rosas; I. Y. Platero; J. C. Antuña Jr; N. Díaz
Determination of the Broadband Aerosol Optical Depth Baseline and comparison with sun photometer data Conference
Cayo Coco, Cuba, 2015, (VIII Taller de Mediciones con Lidar en Latinoamérica (WLMLA) ).
@conference{García2015b,
title = {Determination of the Broadband Aerosol Optical Depth Baseline and comparison with sun photometer data},
author = {F. García and R. Estevan and J. C. Antuña and J. Rosas and I. Y. Platero and J. C. Antuña Jr and N. Díaz},
year = {2015},
date = {2015-04-14},
address = {Cayo Coco, Cuba},
note = {VIII Taller de Mediciones con Lidar en Latinoamérica (WLMLA)
},
keywords = {},
pubstate = {published},
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}