He has a contract partly supported by the Technical Personnel program of the Spanish Ministry of Science, under the title ”Maintenance, supervision and automation of the RIMA calibration facility”. Our group supports 50% of his salary with its own projects (contracts with AEMET and JCyL). He is a Computer Technical Engineer and he is currently performing his master thesis to become in a Computer Engineer. The project is based on the task of calibration and investigation that GOA develops. His mission into the group is to attend the work of calibration and maintenance (repair, cleaning, etc.) of RIMA Cimel sun photometers, what also means maintenance of the field calibration platform in Autilla del Pino (Palencia) and the Optics laboratory. At the same time he is the webmaster of the GOA and RIMA websites and he supports part of the IT work performed by David Fuertes.
Publications
2024
S. Adriaensen; P. de Vis; J. Gatón; Á. Barreto; A. Bialek; M. Bouvet; J. Fahy; R. González; C. Toledano
Modelling the degree of linear polarization (DoLP) of the Moon’s light with a Cimel CE318-TP9 Conference
Advancement of POLarimetric Observations (APOLO) 18-21 Nov 2024. Kyoto, Japan, 2024.
@conference{Adriaensen2024,
title = {Modelling the degree of linear polarization (DoLP) of the Moon’s light with a Cimel CE318-TP9},
author = {S. Adriaensen and P. de Vis and J. Gatón and Á. Barreto and A. Bialek and M. Bouvet and J. Fahy and R. González and C. Toledano},
year = {2024},
date = {2024-11-18},
address = {Kyoto, Japan},
organization = {Advancement of POLarimetric Observations (APOLO) 18-21 Nov 2024.},
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Daniel González-Fernández; Roberto Román; David Mateos; Celia Herrero del Barrio; Victoria E. Cachorro; Gustavo Copes; Ricardo Sánchez; Rosa Delia García; Lionel Doppler; Sara Herrero-Anta; Juan Carlos Antuña-Sánchez; África Barreto; Ramiro González; Javier Gatón; Abel Calle; Carlos Toledano; Ángel Frutos
Retrieval of Solar Shortwave Irradiance from All-Sky Camera Images Journal Article
In: Remote Sensing, vol. 16, no. 20, 2024, ISSN: 2072-4292.
@article{rs16203821,
title = {Retrieval of Solar Shortwave Irradiance from All-Sky Camera Images},
author = {Daniel González-Fernández and Roberto Román and David Mateos and Celia Herrero del Barrio and Victoria E. Cachorro and Gustavo Copes and Ricardo Sánchez and Rosa Delia García and Lionel Doppler and Sara Herrero-Anta and Juan Carlos Antuña-Sánchez and África Barreto and Ramiro González and Javier Gatón and Abel Calle and Carlos Toledano and Ángel Frutos},
url = {https://www.mdpi.com/2072-4292/16/20/3821},
doi = {10.3390/rs16203821},
issn = {2072-4292},
year = {2024},
date = {2024-10-14},
urldate = {2024-01-01},
journal = {Remote Sensing},
volume = {16},
number = {20},
abstract = {The present work proposes a new model based on a convolutional neural network (CNN) to retrieve solar shortwave (SW) irradiance via the estimation of the cloud modification factor (CMF) from daytime sky images captured by all-sky cameras; this model is named CNN-CMF. To this end, a total of 237,669 sky images paired with SW irradiance measurements obtained by using pyranometers were selected at the following three sites: Valladolid and Izaña, Spain, and Lindenberg, Germany. This dataset was randomly split into training and testing sets, with the latter excluded from the training model in order to validate it using the same locations. Subsequently, the test dataset was compared with the corresponding SW irradiance measurements obtained by the pyranometers in scatter density plots. The linear fit shows a high determination coefficient (R2) of 0.99. Statistical analyses based on the mean bias error (MBE) values and the standard deviation (SD) of the SW irradiance differences yield results close to ?2% and 9%, respectively. The MBE indicates a slight underestimation of the CNN-CMF model compared to the measurement values. After its validation, model performance was evaluated at the Antarctic station of Marambio (Argentina), a location not used in the training process. A similar comparison between the model-predicted SW irradiance and pyranometer measurements yielded R2=0.95, with an MBE of around 2% and an SD of approximately 26%. Although the precision provided by the SD at the Marambio station is lower, the MBE shows that the model’s accuracy is similar to previous results but with a slight overestimation of the SW irradiance. Finally, the determination coefficient improved to 0.99, and the MBE and SD are about 3% and 11%, respectively, when the CNN-CMF model is used to estimate daily SW irradiation values.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
A. F. Almansa; A. Barreto; N. Kouremeti; R. González; A. Masoom; C. Toledano; J. Gröbner; R. D. García; Y. González; S. Kazadzis; S. Victori; O. Álvarez; F. Maupin; P. González; V. Carreño; V. E. Cachorro
The Langley ratio method, a new approach for transferring photometer calibration from direct sun measurement Conference
AERONET Science and Application Exchange 2024, 17-19 Sep 2024 College Park, EEUU, 2024.
@conference{Almansa2024,
title = {The Langley ratio method, a new approach for transferring photometer calibration from direct sun measurement},
author = {A. F. Almansa and A. Barreto and N. Kouremeti and R. González and A. Masoom and C. Toledano and J. Gröbner and R. D. García and Y. González and S. Kazadzis and S. Victori and O. Álvarez and F. Maupin and P. González and V. Carreño and V. E. Cachorro},
year = {2024},
date = {2024-09-17},
address = {College Park, EEUU},
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B. Torres; O. Dubovik; R. González; E. Diez; D. Fuertes; M. Herreras; T. Lapionok; M. Momoi; L. Blarel; P. Goloub; A. Lopatin; C. Toledano; A. Sinyuk; A. Smirnov; I. Slutsker; T. Eck; E. Lind
Enhancing Aerosol Characterization with aureole CCS Scans and optical depth measurements: Introducing GRASP-CCS Conference
AERONET Science and Application Exchange 2024, 17-19 Sep 2024 College Park, EEUU, 2024.
@conference{Torres2024,
title = {Enhancing Aerosol Characterization with aureole CCS Scans and optical depth measurements: Introducing GRASP-CCS},
author = {B. Torres and O. Dubovik and R. González and E. Diez and D. Fuertes and M. Herreras and T. Lapionok and M. Momoi and L. Blarel and P. Goloub and A. Lopatin and C. Toledano and A. Sinyuk and A. Smirnov and I. Slutsker and T. Eck and E. Lind},
year = {2024},
date = {2024-09-17},
address = {College Park, EEUU},
organization = {AERONET Science and Application Exchange 2024, 17-19 Sep 2024},
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pubstate = {published},
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Daniel González-Fernández; Roberto Román; Juan Carlos Antuña-Sánchez; Victoria E. Cachorro; Gustavo Copes; Sara Herrero-Anta; Celia Herrero del Barrio; África Barreto; Ramiro González; Ramón Ramos; Patricia Martín; David Mateos; Carlos Toledano; Abel Calle; Ángel Frutos
A neural network to retrieve cloud cover from all-sky cameras: A case of study over Antarctica Journal Article
In: Quarterly Journal of the Royal Meteorological Society, vol. n/a, no. n/a, 2024.
@article{gonzalez2024CCNeural,
title = {A neural network to retrieve cloud cover from all-sky cameras: A case of study over Antarctica},
author = {Daniel González-Fernández and Roberto Román and Juan Carlos Antuña-Sánchez and Victoria E. Cachorro and Gustavo Copes and Sara Herrero-Anta and Celia Herrero del Barrio and África Barreto and Ramiro González and Ramón Ramos and Patricia Martín and David Mateos and Carlos Toledano and Abel Calle and Ángel Frutos},
url = {https://rmets.onlinelibrary.wiley.com/doi/abs/10.1002/qj.4834},
doi = {https://doi.org/10.1002/qj.4834},
year = {2024},
date = {2024-08-28},
journal = {Quarterly Journal of the Royal Meteorological Society},
volume = {n/a},
number = {n/a},
abstract = {Abstract We present a new model based on a convolutional neural network (CNN) to predict daytime cloud cover (CC) from sky images captured by all-sky cameras, which is called CNN-CC. A total of 49,016 daytime sky images, recorded at different Spanish locations (Valladolid, La Palma, and Izaña) from two different all-sky camera types, are manually classified into different CC (oktas) values by trained researchers. Subsequently, the images are randomly split into a training set and a test set to validate the model. The CC values predicted by the CNN-CC model are compared with the observations made by trained people on the test set, which serve as reference. The predicted CC values closely match the reference values within ±$$ ± $$1?oktas in 99% of the cloud-free and overcast cases. Moreover, this percentage is above 93% for the rest of partially cloudy cases. The mean bias error (MBE) and standard deviation (SD) of the differences between the predicted and reference CC values are calculated, resulting in MBE=0.007$$ mathrmMBE=0.007 $$?oktas and SD=0.674$$ mathrmSD=0.674 $$?oktas. The MBE and SD are also represented for different intervals of measured aerosol optical depth and Ångström exponent values, revealing that the performance of the CNN-CC model does not depend on aerosol load or size. Once the model is validated, the CC obtained from a set of images captured every 5?min, from January 2018 to March 2022, at the Antarctic station of Marambio (Argentina) is compared against direct field observations of CC (not from images) taken at this location, which is not used in the training process. As a result, the model slightly underestimates the observations with an MBE of ?$$ - $$0.3?oktas. The retrieved data are analyzed in detail. The monthly and annual CC values are calculated. Overcast conditions are the most frequent, accounting for 46.5% of all observations throughout the year, rising to 64.5% in January. The annual mean CC value at this location is 5.5?oktas, with a standard deviation of approximately 3.1?oktas. A similar analysis is conducted, separating data by hours, but no significant diurnal cycles are observed except for some isolated months.},
keywords = {},
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}
A. Calle; J. Gatón; R. González; R. Carracedo; R. Román; P. Martín; D. Mateos; C. Toledano; V. Cachorro; J.A. Sobrino; D. Skokovich; A.M. de Frutos
Puesta en operación, de instrumentación, en la Base Antártica de Marambio Conference
XX Congreso de la Asociación Española de Teledetección AET2024, 4-7 Jun 2024 Cádiz, Spain, 2024.
@conference{Calle2024b,
title = {Puesta en operación, de instrumentación, en la Base Antártica de Marambio},
author = {A. Calle and J. Gatón and R. González and R. Carracedo and R. Román and P. Martín and D. Mateos and C. Toledano and V. Cachorro and J.A. Sobrino and D. Skokovich and A.M. de Frutos},
year = {2024},
date = {2024-06-04},
address = {Cádiz, Spain},
organization = {XX Congreso de la Asociación Española de Teledetección AET2024, 4-7 Jun 2024},
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S. Herrero-Anta; C. Herrero del Barrio; D. Mateos; R. Román; D. González-Fernández; R. González; C. Toledano; V.E. Cachorro; A. Calle; Á.M. de Frutos
Caracterización de eventos de alta turbiedad por fotometría solar en el Ártico europeo entre 2017-2020 y su correspondiente efecto radiativo Conference
Poster presentation X Simposio de estudios polares 15-17 May 2024 Salamanca, Spain, 2024.
@conference{Herrero-Anta2024c,
title = {Caracterización de eventos de alta turbiedad por fotometría solar en el Ártico europeo entre 2017-2020 y su correspondiente efecto radiativo},
author = {S. Herrero-Anta and C. Herrero del Barrio and D. Mateos and R. Román and D. González-Fernández and R. González and C. Toledano and V.E. Cachorro and A. Calle and Á.M. de Frutos},
year = {2024},
date = {2024-05-15},
urldate = {2024-05-15},
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D. González-Fernández; R. Román; J.C. Antuña-Sánchez; V.E. Cachorro; G. Copes; S. Herrero-Anta; C. Herrero-del Barrio; Á. Barreto; R. González; R. Ramos; P. Martín; D. Mateos; C. Toledano; A. Calle; Á.M. de Frutos
Development and application over an Antarctic station of a neural network model to retrieve cloud cover from all-sky cameras Conference
Poster presentation X Simposio de estudios polares 15-17 May 2024 Salamanca, Spain, 2024.
@conference{González-Fernández2024,
title = {Development and application over an Antarctic station of a neural network model to retrieve cloud cover from all-sky cameras },
author = {D. González-Fernández and R. Román and J.C. Antuña-Sánchez and V.E. Cachorro and G. Copes and S. Herrero-Anta and C. Herrero-del Barrio and Á. Barreto and R. González and R. Ramos and P. Martín and D. Mateos and C. Toledano and A. Calle and Á.M. de Frutos},
year = {2024},
date = {2024-05-15},
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D. Mateos; R. González; S. Herrero-Anta; C. Herrero del Barrio; R. Román; D. González-Fernández; E. Asmi; E. Rodriguez; I.C. Lau; R. D’Elia; C. Toledano; V.E. Cachorro; A. Calle; Á.M. de Frutos
Seguimiento de una pluma de aerosol originado por la quema de biomasa desde Australia hasta la Antártida Conference
Poster presentation X Simposio de estudios polares 15-17 May 2024 Salamanca, Spain, 2024.
@conference{Mateos2024,
title = {Seguimiento de una pluma de aerosol originado por la quema de biomasa desde Australia hasta la Antártida},
author = {D. Mateos and R. González and S. Herrero-Anta and C. Herrero del Barrio and R. Román and D. González-Fernández and E. Asmi and E. Rodriguez and I.C. Lau and R. D’Elia and C. Toledano and V.E. Cachorro and A. Calle and Á.M. de Frutos},
year = {2024},
date = {2024-05-15},
urldate = {2024-05-15},
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S. Herrero-Anta; C. Herrero del Barrio; D. Mateos; R. Román; C. Ritter; D. González-Fernández; R. González; C. Toledano; V.E. Cachorro; A. Calle; Á.M. de Frutos
Aerosol properties retrieved under high turbidity conditions and the corresponding aerosol radiative effect in the European Arctic in the period 2017-2022 by sun photometry Conference
Poster presentation ACTRIS Science Conference 13-16 May 2024 Rennes, France, 2024.
@conference{Herrero-Anta2024d,
title = {Aerosol properties retrieved under high turbidity conditions and the corresponding aerosol radiative effect in the European Arctic in the period 2017-2022 by sun photometry},
author = {S. Herrero-Anta and C. Herrero del Barrio and D. Mateos and R. Román and C. Ritter and D. González-Fernández and R. González and C. Toledano and V.E. Cachorro and A. Calle and Á.M. de Frutos},
year = {2024},
date = {2024-05-13},
urldate = {2024-05-13},
address = {Rennes, France},
organization = {ACTRIS Science Conference 13-16 May 2024},
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D. González-Fernández; R. Román; J.C. Antuña-Sánchez; V.E. Cachorro; G. Copes; S. Herrero-Anta; C. Herrero-del Barrio; Á. Barreto; R. González; R. Ramos; P. Martín; D. Mateos; C. Toledano; A. Calle; Á.M. de Frutos
Application in an Antarctic site of a neural network for cloud cover retrieval from all-sky cameras Conference
Poster presentation ACTRIS Science Conference 13-16 May 2024 Rennes, France, 2024.
@conference{González-Fernández2024b,
title = {Application in an Antarctic site of a neural network for cloud cover retrieval from all-sky cameras },
author = {D. González-Fernández and R. Román and J.C. Antuña-Sánchez and V.E. Cachorro and G. Copes and S. Herrero-Anta and C. Herrero-del Barrio and Á. Barreto and R. González and R. Ramos and P. Martín and D. Mateos and C. Toledano and A. Calle and Á.M. de Frutos},
year = {2024},
date = {2024-05-13},
address = {Rennes, France},
organization = {ACTRIS Science Conference 13-16 May 2024},
series = {Poster presentation},
keywords = {},
pubstate = {published},
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C. Herrero del Barrio; R. Román; R. González; A. Cazorla, M. Herreras-Giralda; J.C. Antuña-Sánchez; S. Herrero; D. González-Fernández; D. Mateos; C. Toledano; V.E. Cachorro; Á.M de Frutos
CAECENET: Automatic and continuous columnar and vertical aerosol properties from photometer and ceilometer measurements Conference
Poster presentation ACTRIS Science Conference 13-16 May 2024 Rennes, France, 2024.
@conference{delBarrio2024c,
title = {CAECENET: Automatic and continuous columnar and vertical aerosol properties from photometer and ceilometer measurements},
author = {C. Herrero del Barrio and R. Román and R. González and A. Cazorla, M. Herreras-Giralda and J.C. Antuña-Sánchez and S. Herrero and D. González-Fernández and D. Mateos and C. Toledano and V.E. Cachorro and Á.M de Frutos
},
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C. Toledano; S. Adriaensen; A. Bialek; Á. Barreto; R. González; P. De Vis; J. Gatón; M. Bouvet.
The Lunar Irradiance Model of ESA (LIME) Conference
Oral presentation ACTRIS Science Conference 13-16 May 2024 Rennes, France, 2024.
@conference{Toledano2024b,
title = {The Lunar Irradiance Model of ESA (LIME)},
author = {C. Toledano and S. Adriaensen and A. Bialek and Á. Barreto and R. González and P. De Vis and J. Gatón and M. Bouvet.},
year = {2024},
date = {2024-05-13},
address = {Rennes, France},
organization = {ACTRIS Science Conference 13-16 May 2024 },
series = {Oral presentation},
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A. Calle; J.C. Antuña-Marrero; N. Rojas; J. Gatón; R. González; R. Carracedo; R. Román; P. Martín; D. Mateos; C. Toledano; V.E. Cachorro; A. de Frutos
Set-up instrumentation in the Antarctic Station of Marambio to detect atmospheric events: case of forest fires in Chile Conference
Poster presentation XII International Workshop on Long-Term Changes and Trends in the Atmosphere Ourense, Spain, 2024.
@conference{Calle2024,
title = {Set-up instrumentation in the Antarctic Station of Marambio to detect atmospheric events: case of forest fires in Chile},
author = { A. Calle and J.C. Antuña-Marrero and N. Rojas and J. Gatón and R. González and R. Carracedo and R. Román and P. Martín and D. Mateos and C. Toledano and V.E. Cachorro and A. de Frutos},
year = {2024},
date = {2024-05-06},
urldate = {2024-05-06},
address = {Ourense, Spain},
organization = {XII International Workshop on Long-Term Changes and Trends in the Atmosphere},
series = {Poster presentation},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
S. Herrero-Anta; D. Mateos; R. Román; D. González-Fernández; C. Herrero del Barrio; R. González; C. Toledano; V.E. Cachorro; A. Calle; Á.M. de Frutos
Identificación de eventos de alta turbiedad de aerosol en el Ártico europeo mediante fotometría solar Conference
Oral presentation 10 Jonadas de Investigadoras de Castilla y León, 18-19 Apr 2024 Valladolid, Spain, 2024.
@conference{Herrero-Anta2024b,
title = {Identificación de eventos de alta turbiedad de aerosol en el Ártico europeo mediante fotometría solar},
author = {S. Herrero-Anta and D. Mateos and R. Román and D. González-Fernández and C. Herrero del Barrio and R. González and C. Toledano and V.E. Cachorro and A. Calle and Á.M. de Frutos},
year = {2024},
date = {2024-04-18},
urldate = {2024-04-18},
address = {Valladolid, Spain},
organization = {10 Jonadas de Investigadoras de Castilla y León, 18-19 Apr 2024},
series = {Oral presentation},
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C. Herrero del Barrio; R. Román; R. González, A. Cazorla, M. Herreras-Giralda, J.C. Antuña-Sánchez, S. Herrero-Anta; D. González-Fernández; D. Mateos; C. Toledano; V.E. Cachorro; A. de Frutos
Perfiles verticales de propiedades de los aerosoles atmosféricos: CAECENET Conference
Oral presentation 10 Jonadas de Investigadoras de Castilla y León, 18-19 Apr 2024 Valladolid, Spain, 2024.
@conference{delBarrio2024b,
title = {Perfiles verticales de propiedades de los aerosoles atmosféricos: CAECENET},
author = {C. Herrero del Barrio and R. Román and R. González, A. Cazorla, M. Herreras-Giralda, J.C. Antuña-Sánchez, S. Herrero-Anta and D. González-Fernández and D. Mateos and C. Toledano and V.E. Cachorro and A. de Frutos},
year = {2024},
date = {2024-04-18},
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A. F. Almansa; Á. Barreto; N. Kouremeti; R. González; A. Masoom; C. Toledano; J. Gröbner; R. D. García; Y. González; S. Kazadzis; S. Victori; Ó. Álvarez; F. Maupin; V. Carreño; V. E. Cachorro; E. Cuevas
The Langley ratio method, a new approach for transferring photometer calibration from direct sun measurements Journal Article
In: Atmospheric Measurement Techniques, vol. 17, no. 2, pp. 659–675, 2024.
@article{Almansa2024b,
title = {The Langley ratio method, a new approach for transferring photometer calibration from direct sun measurements},
author = {A. F. Almansa and Á. Barreto and N. Kouremeti and R. González and A. Masoom and C. Toledano and J. Gröbner and R. D. García and Y. González and S. Kazadzis and S. Victori and Ó. Álvarez and F. Maupin and V. Carreño and V. E. Cachorro and E. Cuevas},
url = {https://amt.copernicus.org/articles/17/659/2024/},
doi = {10.5194/amt-17-659-2024},
year = {2024},
date = {2024-01-26},
urldate = {2024-01-01},
journal = {Atmospheric Measurement Techniques},
volume = {17},
number = {2},
pages = {659–675},
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}
C. Toledano; S. Taylor; Á. Barreto; S. Adriaensen; A. Berjón; A. Bialek; R. González; E. Woolliams; M. Bouvet
LIME: Lunar Irradiance Model of ESA, a new tool for absolute radiometric calibration using the Moon Journal Article
In: Atmospheric Chemistry and Physics, vol. 24, no. 6, pp. 3649–3671, 2024.
@article{Toledano2024,
title = {LIME: Lunar Irradiance Model of ESA, a new tool for absolute radiometric calibration using the Moon},
author = {C. Toledano and S. Taylor and Á. Barreto and S. Adriaensen and A. Berjón and A. Bialek and R. González and E. Woolliams and M. Bouvet},
url = {https://acp.copernicus.org/articles/24/3649/2024/},
doi = {10.5194/acp-24-3649-2024},
year = {2024},
date = {2024-01-01},
urldate = {2024-01-01},
journal = {Atmospheric Chemistry and Physics},
volume = {24},
number = {6},
pages = {3649–3671},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2023
S. Herrero-Anta; D. Mateos; R. Román; C. Ritter; D. González-Fernández; C. Herrero del Barrio; R. González; C. Toledano; V.E. Cachorro; A. Calle; Á.M. de Frutos.
Aerosol properties retrieved under high turbidity conditions and the corresponding aerosol radiative effect in the European Arctic in the period 2017-2022 by sun photometry Conference
Svalbard Science Conference 2023 Oslo, Norway, 2023.
@conference{Herrero-Anta2023d,
title = {Aerosol properties retrieved under high turbidity conditions and the corresponding aerosol radiative effect in the European Arctic in the period 2017-2022 by sun photometry},
author = {S. Herrero-Anta and D. Mateos and R. Román and C. Ritter and D. González-Fernández and C. Herrero del Barrio and R. González and C. Toledano and V.E. Cachorro and A. Calle and Á.M. de Frutos.},
year = {2023},
date = {2023-10-31},
address = {Oslo, Norway},
organization = {Svalbard Science Conference 2023},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
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},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
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},
date = {2023-09-04},
urldate = {2023-09-04},
publisher = {European Aerosol Conference 2023},
address = {Málaga, Spain},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
C. Herrero del Barrio; D. Mateos; R. Román; R. González; S. Herrero-Anta; D. González-Fernández; A. Calle; C. Toledano; V.E. Cachorro; A.M. de Frutos
Analysis of daytime and night-time aerosol optical depth from sun and lunar photometry at North Central Iberian Peninsula Conference
European Aerosol Conference 2023, Málaga, Spain, 2023.
@conference{delBarrio2023,
title = {Analysis of daytime and night-time aerosol optical depth from sun and lunar photometry at North Central Iberian Peninsula},
author = {C. Herrero del Barrio and D. Mateos and R. Román and R. González and S. Herrero-Anta and D. González-Fernández and A. Calle and C. Toledano and V.E. Cachorro and A.M. de Frutos},
year = {2023},
date = {2023-09-04},
publisher = {European Aerosol Conference 2023},
address = {Málaga, Spain},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
D. Mateos; C. Toledano; R. Román; R. González; S. Herrero-Anta; D. González-Fernández; C. Herrero del Barrio; A. Calle; V.E. Cachorro; A. M de Frutos.
Columnar aerosol properties by sun and lunar photometry in the Arctic and in the Antarctica Conference
European Aerosol Conference 2023, Málaga, Spain, 2023.
@conference{Mateos2023,
title = {Columnar aerosol properties by sun and lunar photometry in the Arctic and in the Antarctica},
author = {D. Mateos and C. Toledano and R. Román and R. González and S. Herrero-Anta and D. González-Fernández and C. Herrero del Barrio and A. Calle and V.E. Cachorro and A. M de Frutos.},
year = {2023},
date = {2023-09-04},
publisher = {European Aerosol Conference 2023},
address = {Málaga, Spain},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
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},
urldate = {2023-05-22},
address = {Lille, France},
organization = {Workshop on “Recent advancements in remote sensing and modeling of aerosols, clouds and surfaces” GRASP ACE Summer school,},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Elena Bazo; María J. Granados-Muñoz; Roberto Román; Juan Antonio Bravo-Aranda; Alberto Cazorla; Antonio Valenzuela; Ramiro González; Francisco José Olmo; Lucas Alados-Arboledas
In: Atmospheric Research, vol. 282, pp. 106517, 2023, ISSN: 0169-8095.
@article{Bazo2023,
title = {Evaluation of the vertically-resolved aerosol radiative effect on shortwave and longwave ranges using sun-sky photometer and ceilometer measurements},
author = {Elena Bazo and María J. Granados-Muñoz and Roberto Román and Juan Antonio Bravo-Aranda and Alberto Cazorla and Antonio Valenzuela and Ramiro González and Francisco José Olmo and Lucas Alados-Arboledas},
url = {https://www.sciencedirect.com/science/article/pii/S0169809522005038},
doi = {https://doi.org/10.1016/j.atmosres.2022.106517},
issn = {0169-8095},
year = {2023},
date = {2023-01-01},
urldate = {2023-01-01},
journal = {Atmospheric Research},
volume = {282},
pages = {106517},
abstract = {The aerosol radiative effect (ARE) is one of the atmospheric components still affected by large uncertainty. One of the causes is related to the fact that the longwave (LW) component is usually neglected, even though it is necessary for an accurate quantification of the ARE together with the shortwave component (SW). In this study we have developed a methodology based on the GAME (Global Atmospheric Model) radiative transfer model (RTM) that allows to obtain the radiative effect of the atmospheric aerosol for both spectral ranges in an automated way. The microphysical and optical properties necessary to feed the RTM have been obtained through the GRASP (Generalized Retrieval of Aerosol and Surface Properties) algorithm, with the combination of ceilometer and sun-sky photometer data. Data measured in Granada (Spain) during 2017 have been used for the evaluation and implementation of this methodology. According to the results, the ARE in the SW spectral range (ARESW) varies between 0 and ? 50 Wm?2 for most of the data, whereas the ARE in the LW range (ARELW) varies between 0 and 5 Wm?2, at heights near the surface. In general, the obtained results agree with those found in the literature, with negative values in the SW range (cooling effect) and positive values in the LW (heating effect). The seasonal analysis shows that, for both components, the ARE is more important during the spring and summer seasons, when the aerosol load is greater, as expected. The analysis of the aerosol heating rate (AHR) shows positive values in the SW and negative values in the LW range. The majority of the AHRSW data varies between 0 and 1 Kd?1 during the year whereas the AHRLW does it between 0 and ? 0.15 Kd?1. The seasonal analysis of the AHR shows that the greater monthly average values are found during spring, however there is not much variability along the year, with the exception of February, under the effects of an extreme dust intrusion. The mineral dust particles in this event cause an ARESW of ?130 Wm?2 and an ARELW of 23 Wm?2 (ARELW/ARESW = 17%), thus pointing out that the LW component should not be neglected for coarse mode particles. Additionally, it is observed that the vertical distribution of the aerosol layers strongly influences the ARE and the AHR obtained profiles, affecting the way the atmospheric cooling/heating occurs in the vertical coordinate.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Celia Herrero del Barrio; David Mateos; Roberto Román; Ramiro González; Sara Herrero-Anta; Daniel González-Fernández; Abel Calle; Carlos Toledano; Victoria Eugenia Cachorro; Ángel Máximo De Frutos Baraja
Analysis of Daytime and Night-Time Aerosol Optical Depth from Solar and Lunar Photometry in Valladolid (Spain) Journal Article
In: Remote Sensing, vol. 15, no. 22, 2023, ISSN: 2072-4292.
@article{rs15225362,
title = {Analysis of Daytime and Night-Time Aerosol Optical Depth from Solar and Lunar Photometry in Valladolid (Spain)},
author = {Celia Herrero del Barrio and David Mateos and Roberto Román and Ramiro González and Sara Herrero-Anta and Daniel González-Fernández and Abel Calle and Carlos Toledano and Victoria Eugenia Cachorro and Ángel Máximo De Frutos Baraja},
url = {https://www.mdpi.com/2072-4292/15/22/5362},
doi = {10.3390/rs15225362},
issn = {2072-4292},
year = {2023},
date = {2023-01-01},
urldate = {2023-01-01},
journal = {Remote Sensing},
volume = {15},
number = {22},
abstract = {Aerosol optical depth (AOD) at night-time has become a hot topic in recent years due to the development of new instruments recording accurate ground-based lunar irradiance measurements, and the development of calibration methods and extraterrestrial irradiance models adapted to lunar photometry. This study uses all daytime and night-time AOD data available at Valladolid (Spain) from October 2016 to March 2022 in order to analyze its behavior and the added contribution of night data. The annual, monthly and daily AOD evolution is studied comparing daytime and night-time values and checking the correlation between them. For this purpose, the daily averages are computed, showing an annual pattern, with low AOD values throughout the year (mean value of AOD at 440 nm: 0.122), where winter months have the lower and summer the higher values, as observed in previous studies. All these AOD values are modulated by frequent desert dust events over the Iberian Peninsula, with a strong influence on daily and monthly mean values in February and March, where the strongest desert outbreaks occurred. The added new data confirm these results and the good correlation between daytime and night-time data. Also, a complete daily evolution is shown, observing that AOD and Ångström exponent (AE) mean values vary by only ±0.02 in 24 h, with a maximum value at 06:00 UTC and minimum at 18:00 UTC for both parameters.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2022
M. J. Granados-Muñoz; J. L. Guerrero-Rascado; J. A. Bravo-Aranda; P. Cariñanos; J. Abril-Gago; D. Bermejo-Pantaleon; Alberto Cazorla; Roberto Roman; Ramiro González; Lucas Alados-Arboledas
Analysis of optical, microphysical and radiative properties of extreme pollen events observed by remote sensors in Southeastern Spain Conference
11th International Aerosol Conference (IAC2022) Athens, Greece, 2022.
@conference{Granados-Muñoz2022,
title = {Analysis of optical, microphysical and radiative properties of extreme pollen events observed by remote sensors in Southeastern Spain},
author = {M. J. Granados-Muñoz and J. L. Guerrero-Rascado and J. A. Bravo-Aranda and P. Cariñanos and J. Abril-Gago and D. Bermejo-Pantaleon and Alberto Cazorla and Roberto Roman and Ramiro González and Lucas Alados-Arboledas},
year = {2022},
date = {2022-09-05},
address = {Athens, Greece},
organization = {11th International Aerosol Conference (IAC2022)},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
A. Salguero; J. L. Guerrero-Rascado; M. João Costa; R. Román; A. Cazorla; A. Serrano; M. Pandolf; F. Molero; R. Barragán; M. Sicard; C. Córdoba-Jabonero; D. Bortoli; A. Comerón; F. Tiago Couto; D. C. F. dos Santos Oliveira; R. González; C.Gíl-Día; C. Muñoz-Porcar; D. Pérez-Ramírez; A. Rodríguez-Gómez; M. Herreras-Giralda; J. Abril-Gago; M.Á. López-Cayuela; C.V. Carvajal-Pérez; A. Barreto; L. Alados-Arboledas
Characterization of Cumbre Vieja volcanic plumes detected over the Iberian Peninsula using GRASP algorithm retrievals from a set of remote sensing instrumentation Conference
11th International Aerosol Conference (IAC2022) Athens, Greece, 2022.
@conference{Salguero2022,
title = {Characterization of Cumbre Vieja volcanic plumes detected over the Iberian Peninsula using GRASP algorithm retrievals from a set of remote sensing instrumentation},
author = {A. Salguero and J. L. Guerrero-Rascado and M. João Costa and R. Román and A. Cazorla and A. Serrano and M. Pandolf and F. Molero and R. Barragán and M. Sicard and C. Córdoba-Jabonero and D. Bortoli and A. Comerón and F. Tiago Couto and D. C. F. dos Santos Oliveira and R. González and C.Gíl-Día and C. Muñoz-Porcar and D. Pérez-Ramírez and A. Rodríguez-Gómez and M. Herreras-Giralda and J. Abril-Gago and M.Á. López-Cayuela and C.V. Carvajal-Pérez and A. Barreto and L. Alados-Arboledas},
year = {2022},
date = {2022-09-05},
address = {Athens, Greece},
organization = {11th International Aerosol Conference (IAC2022)},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
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},
date = {2022-07-04},
urldate = {2022-07-04},
address = {Thessaloniki},
organization = {International Radiation Symposium},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
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},
date = {2022-07-04},
urldate = {2022-07-04},
address = {Thessaloniki, Greece},
organization = {International Radiation Symposium},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
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},
year = {2022},
date = {2022-07-04},
urldate = {2022-07-04},
address = {Thessaloniki, Greece},
organization = {International Radiation Symposium},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
A. Barreto; O.E. García; R. Román; M. Sicard; V. Rizi; R. Roininen; P.M. Romero- Campos; Y. González; S. Rodríguez; R.D. García; C. Torres; M. Iarlori; E. Cuevas; C. Córdoba-Jabonero; J. de La Rosa; A. Rodríguez-Gómez; C. Muñoz-Porcar; A. Comerón; A. Bedoya-Velásquez; J.C. Antuña-Sánchez; V. Neustroev; E. Pietropaolo; J. López- Darias; M.A. López-Cayuela; C. Carvajal-Pérez; J.J. Bustos; O. Álvarez; C. Toledano; C. Aramo; J. Vilches; R. González; A.F. Almansa; R. Ceolato; N. Taquet; N. Prats; A. Redondas; C.I. Bayo; R. Ramos; V. Carreño; S.L. León; P.P. Rivas; A. Alcántara; C. López; P. Martín
La Palma Volcano Eruption: Characterisation of Volcanic Aerosols and Gas Emissions from a Synergetic Perspective Conference
International Radiation Symposium Thessaloniki, Greece, 2022.
@conference{Barreto2022,
title = {La Palma Volcano Eruption: Characterisation of Volcanic Aerosols and Gas Emissions from a Synergetic Perspective},
author = {A. Barreto and O.E. García 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 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-Sánchez and V. Neustroev and E. Pietropaolo and J. López- Darias and M.A. López-Cayuela and C. Carvajal-Pérez and J.J. Bustos and O. Álvarez and C. Toledano and C. Aramo and J. Vilches and R. González and A.F. Almansa and R. Ceolato and N. Taquet and N. Prats and A. Redondas and C.I. Bayo and R. Ramos and V. Carreño and S.L. León and P.P. Rivas and A. Alcántara and C. López and P. Martín},
year = {2022},
date = {2022-07-04},
address = {Thessaloniki, Greece},
organization = {International Radiation Symposium},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
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},
year = {2022},
date = {2022-06-29},
urldate = {2022-07-04},
address = {Thessaloniki, Greece},
organization = {International Radiation Symposium},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
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
},
year = {2022},
date = {2022-06-29},
address = {Pamplona, Spain},
organization = {XIX Congreso de la Asociación Española de Teledetección},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
García, O.; Suárez, D.; Cuevas, E.; Ramos, R.; Barreto, Á.; Hernández, M.; Quintero, V.; Toledano, C.; Sicard, M.; Córdoba-Jabonero, C.; Riz, V.; Roininen, R.; López, C.; Vilches, J.; Weiss, M.; Carreño, V.; Taquet, N.; Boulesteix, T.; Fraile, E.; Torres, C.; Prats, N.; Alcántara, A.; León, S.; Rivas, P.; Álvarez, Ó.; Parra, F.; de Luis, J.; González, C.; Armas, C.; Romero, P.; de Bustos, J.; Redondas, A.; Marrero, C.; Milford, C.; Román, R.; González, R.; López-Cayuela, M.; Carvajal-Pérez, C.; Chinea, N.; García, R.; Almansa, F.; González, Y.; Bullón, F.; Poggio, M.; Rivera, C.; Bayo, C.; Rey, F.
La erupción volcánica de La Palma y el papel de la Agencia Estatal de Meteorología Journal Article
In: Revista Tiempo Y Clima, vol. 5, no. 76, 2022.
@article{García2022,
title = {La erupción volcánica de La Palma y el papel de la Agencia Estatal de Meteorología},
author = {García, O. and Suárez, D. and Cuevas, E. and Ramos, R. and Barreto, Á. and Hernández, M. and Quintero, V. and Toledano, C. and Sicard, M. and Córdoba-Jabonero, C. and Riz, V. and Roininen, R. and López, C. and Vilches, J. and Weiss, M. and Carreño, V. and Taquet, N. and Boulesteix, T. and Fraile, E. and Torres, C. and Prats, N. and Alcántara, A. and León, S. and Rivas, P. and Álvarez, Ó. and Parra, F. and de Luis, J. and González, C. and Armas, C. and Romero, P. and de Bustos, J. and Redondas, A. and Marrero, C. and Milford, C. and Román, R. and González, R. and López-Cayuela, M. and Carvajal-Pérez, C. and Chinea, N. and García, R. and Almansa, F. and González, Y. and Bullón, F. and Poggio, M. and Rivera, C. and Bayo, C. and Rey, F.},
url = {https://pub.ame-web.org/index.php/TyC/article/view/2516},
year = {2022},
date = {2022-05-04},
journal = { Revista Tiempo Y Clima},
volume = {5},
number = {76},
abstract = {Durante la erupción del volcán de Cumbre Vieja, en la isla de La Palma en 2021, la Agencia Estatal de Meteorología (AEMET), en calidad de Servicio Nacional y Autoridad Meteorológica del Estado, prestó diferentes servicios de apoyo al Comité Científico y al Comité Asesor del Plan de Emergencias Volcánicas de Canarias (PEVOLCA). Parte de sus actividades abarcaron la vigilancia y predicción meteorológica, la monitorización y predicción del transporte del penacho volcánico, y la valoración del impacto de las emisiones de gases y cenizas de la erupción volcánica en la calidad del aire en la isla de La Palma y en la región de Canarias.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
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).},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
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}
}
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}
}
A. Bereinkua; D. Pérez-Ramírez; H. Lyamani; A. Cazorla; R. Román; R. González; D. Bermejo-Pantaleón; S.D. Aguirre-García; S. Aranda; P. Cariñanos; M. J. Granados-Muñoz; J. A. Bravo-Aranda; J. Abril-Gago; L. Alados-Arboledas; J. L. Guerrero-Rascado
First characterization of aerosol profiles retrieved from ceilometer and sun-photometer by the GRASP algorithm at the rural Guadiana-UGR station Conference
European Lidar Conference 2021 (ELC2021) Granada, Spain, 2021.
@conference{Bereinkua2021,
title = {First characterization of aerosol profiles retrieved from ceilometer and sun-photometer by the GRASP algorithm at the rural Guadiana-UGR station},
author = { A. Bereinkua and D. Pérez-Ramírez and H. Lyamani and A. Cazorla and R. Román and R. González and D. Bermejo-Pantaleón and S.D. Aguirre-García and S. Aranda and P. Cariñanos and M. J. Granados-Muñoz and J. A. Bravo-Aranda and J. Abril-Gago and L. Alados-Arboledas and J. L. Guerrero-Rascado},
year = {2021},
date = {2021-11-16},
address = {Granada, Spain},
organization = {European Lidar Conference 2021 (ELC2021)},
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}
}
A. Bereinkua; D. Pérez-Ramírez; H. Lyamani; A. Cazorla; R. Román; R. González; D. Bermejo-Pantaleón; S. D. Aguirre-García; S. Aranda; P. Cariñanos; M. J. Granados-Muñoz; J. A. Bravo-Aranda; L. Alados-Arboledas; J. L. Guerrero-Rascado
Intense Saharan Dust Event Over the Southern Iberian Peninsula in Spring 2021 study using GRASP Algorithm Conference
XI Workshop on Lidar Measurements in Latin America (WLMÑLA XI) Punta Arenas, Chile, 2021.
@conference{Bereinkua2021b,
title = {Intense Saharan Dust Event Over the Southern Iberian Peninsula in Spring 2021 study using GRASP Algorithm},
author = { A. Bereinkua and D. Pérez-Ramírez and H. Lyamani and A. Cazorla and R. Román and R. González and D. Bermejo-Pantaleón and S. D. Aguirre-García and S. Aranda and P. Cariñanos and M. J. Granados-Muñoz and J. A. Bravo-Aranda and L. Alados-Arboledas and J. L. Guerrero-Rascado},
year = {2021},
date = {2021-10-19},
address = {Punta Arenas, Chile},
organization = {XI Workshop on Lidar Measurements in Latin America (WLMÑLA XI)},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Guerrero-Rascado, J.L.; Bereinkua, A.; Bermejo-Pantaléon, D.; Román, R.; González, R.; Cazorla, A.; Pérez-Ramírez, D.; Lyamani, H.; Aguirre-García, S. D.; Aranda, S.; Abril-Gago, J.; Granados-Muñoz, M. J.; Bravo-Aranda, J. A.; Alados-Arboledas, L.; Cariñanos, P
First characterization of the pollen vertical profiles at an olive crop by remote sensing techniques Conference
Air Pollution threats to Plant Ecosystems Conference Paphos, Cyprus, 2021.
@conference{Guerrero-Rascado2021,
title = {First characterization of the pollen vertical profiles at an olive crop by remote sensing techniques},
author = {Guerrero-Rascado, J.L. and Bereinkua, A. and Bermejo-Pantaléon, D. and Román, R. and González, R. and Cazorla, A. and Pérez-Ramírez, D. and Lyamani, H. and Aguirre-García, S. D. and Aranda, S. and Abril-Gago, J. and Granados-Muñoz, M. J. and Bravo-Aranda, J. A. and Alados-Arboledas, L. and Cariñanos, P},
year = {2021},
date = {2021-10-11},
address = {Paphos, Cyprus},
organization = {Air Pollution threats to Plant Ecosystems Conference},
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}
}
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}
}
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}
}
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}
}
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.
Barreto, A.; Doppler, L.; Toledano, C.; Mazzola, M.; Kouremeti, N.; Uchiyama, A.; Novikov, V.; Navas-Guzmán, F.; Román, R.; Ritter, C.; González, R.; Vitale, V.; Stone, R.; Ivanescu, L.; Schulz, K.H.; Yamazahki, A.
Preliminary results on the third lunar/stellar AOD intercomparison campaign at Lindenberg’s MOL-RAO Observatory Conference
Arctic Science Summit Week 2021 Lisbon, Portugal (online), 2021.
@conference{Barreto2021d,
title = {Preliminary results on the third lunar/stellar AOD intercomparison campaign at Lindenberg’s MOL-RAO Observatory},
author = {Barreto, A. and Doppler, L. and Toledano, C. and Mazzola, M. and Kouremeti, N. and Uchiyama, A. and Novikov, V. and Navas-Guzmán, F. and Román, R. and Ritter, C. and González, R. and Vitale, V. and Stone, R. and Ivanescu, L. and Schulz, K.H. and Yamazahki, A.
},
year = {2021},
date = {2021-03-26},
address = {Lisbon, Portugal (online)},
organization = {Arctic Science Summit Week 2021},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}