Juan Carlos Antuña-Sánchez

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

51 entries « ‹ 1 of 2 › »

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.

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.

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.

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.

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.

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.

Abstract | Links | BibTeX

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.

Abstract | Links | BibTeX

@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.

Abstract | Links | BibTeX

@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.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

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.

Abstract | Links | BibTeX

@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}

}

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.

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.

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.

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.

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.

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.

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.

Abstract | BibTeX

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.

Abstract | BibTeX

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.

Abstract | BibTeX

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.

Abstract | BibTeX

@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}

}

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.

Abstract | Links | BibTeX

@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}

}

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.

Abstract | Links | BibTeX

@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.

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.

Abstract | Links | BibTeX

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.

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.

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.

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.

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.

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

Evaluation of night-time aerosols measurements and lunar irradiance models in the frame of the first multi-instrument nocturnal intercomparison campaign. Journal Article

In: Atmospheric Environment, vol. 202, pp. 190-211, 2019, ISSN: 1352-2310.

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 Inproceedings

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.

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.

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).

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.

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).

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 ).

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

Characterization of Saharan and Arabian dust episodes by sun photometry in the A-LIFE field experiment in Cyprus Conference

UPV and UNED Bilbao, Spain, 2018.

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.

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 ).

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 ).

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 Inproceedings

In: IGARSS 2018-2018 IEEE International Geoscience and Remote Sensing Symposium. , pp. 9138 - 9140, 2018, ISBN: 978-1-5386-7150-4.

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

Columnar and surface aerosol relationships in the background environment of Castile and León region (North-central Spain) Conference

Universitat Politècnica de Catalunya Barcelona, Spain, 2017, (44th Annual European Meeting on Atmospheric Studies by Optical Methods).

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 ).

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) ).

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.

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) ).

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) ).

J. C. Antuña-Sánchez; N. Díaz; R. Estevan; A. M. de Frutos

Cloud camera design from a Raspberry Pi Conference

Cayo Coco, Cuba, 2015, (VIII Taller de Mediciones con Lidar en Latinoamérica (WLMLA) ).

J.C. Antuña-Sánchez, N. Díaz, R. Estevan, A.M. de Frutos,; J.C. Antuña-Marrero

Cloud camera design using a Raspberry Pi Journal Article

In: Optica Pura y Aplicada, vol. 48, no. 3, pp. 199-205, 2015.

Nelson Díaz; Leonardo Fernández; Juan Carlos Antuña Sánchez; Jorge Rosas Santana; Albert Rodriguez; Frank Garcia Parrado; Iralmy Platero

Switching power supply and digital galvanometer design for calibrating an angular response of solar radiation sensors Journal Article

In: Apuntes de Ciencia & Sociedad, vol. 05, 2015.

2011

Juan Carlos Antuña-Marrero; Carlos Hernández; René Estevan; Boris Barja; Aramís Fonte; Teresita Hernández; Juan Carlos Antuña Jr.

Camagüey's solar radiation rescued dataset: preliminary applications Journal Article

In: vol. 44, pp. 43-48, 2011.

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