Search an Article

@article{Gatón2026,

title = {Multi-frame cloud prediction in all-sky images from RGB images and segmented masks},

author = {Javier Gatón and Roberto Román and Cesar Guzman and Daniel González-Fernández and Bruno Longarela and Carlos Toledano and Ramiro González},

url = {https://www.sciencedirect.com/science/article/pii/S0038092X26002033},

doi = {https://doi.org/10.1016/j.solener.2026.114515},

issn = {0038-092X},

year  = {2026},

date = {2026-03-18},

urldate = {2026-01-01},

journal = {Solar Energy},

volume = {311},

pages = {114515},

abstract = {This paper presents a comparative study on the impact of input representation on deterministic artificial intelligence models for short-term multi-frame prediction in all-sky images. This work compares a model operating on 8-bit RGB all-sky images with a model that shares the same backbone, but operates directly on semantically segmented masks that encode cloud-related classes. Using an available sky segmentation model, predictions are evaluated in the segmentation label space using segmenter-derived masks as a proxy reference. Within this evaluation framework, the use of semantic masks as input for short-term prediction leads to improved temporal stability and higher agreement across standard segmentation metrics such as intersection over union, Dice coefficient, and categorical cross-entropy. While these results suggest potential relevance for weather and solar energy nowcasting applications, further validation against physical irradiance measurements is required.},

keywords = {All-sky images, Artificial intelligence, Cloud motion prediction, clouds, Next-frame prediction, Semantic segmentation},

pubstate = {published},

tppubtype = {article}

}

@article{gui2026advancing,

title = {Advancing operational global aerosol forecasting with machine learning},

author = {K. Gui and X. Zhang and H. Che and L. Li and Y. Zheng and L. An and Y. Miao and H. Zhao and O. Dubovik and B. Holben and J. Wang and P. Gupta and E.S. Lind and C. Toledano and H. Wang and Z. Wang and Y. Wang and X. Huang and K. Dai and X. Xia and X. Xu and X. Zhang},

doi = {10.1038/s41586-026-10234-y},

year  = {2026},

date = {2026-03-04},

urldate = {2026-01-01},

journal = {Nature},

pages = {1–8},

publisher = {Nature Publishing Group UK London},

keywords = {aerosol optical properties, global aerosol forecasting, machine learning},

pubstate = {published},

tppubtype = {article}

}

@article{Barreto2026,

title = {Volcanic plume height during the 2021 Tajogaite eruption (La Palma) from two complementary monitoring methods – implications for satellite-based products},

author = {Á. Barreto and F. Quirós and O. E. García and J. Pereda-de-Pablo and D. González-Fernández and A. Bedoya-Velásquez and M. Sicard and C. Córdoba-Jabonero and M. Iarlori and V. Rizi and N. Krotkov and S. Carn and R. Roininen and A. J. Molina-Arias and A. F. Almansa and Ó. Álvarez-Losada and C. Aramo and J. J. Bustos and R. Ceolato and A. Comerón and A. Felpeto and R. D. García and P. González-Sicilia and Y. González and P. Hedelt and M. Hernández and M. -Á. López-Cayuela and D. Loyola and S. Meletlidis and C. Muñoz-Porcar and E. Pietropaolo and R. Ramos and A. Rodríguez-Gómez and R. Román and P. M. Romero-Campos and M. Stuefer and C. Toledano and E. J. Welton},

url = {https://amt.copernicus.org/articles/19/1385/2026/},

doi = {10.5194/amt-19-1385-2026},

year  = {2026},

date = {2026-02-20},

urldate = {2026-01-01},

journal = {Atmospheric Measurement Techniques},

volume = {19},

number = {4},

pages = {1385–1406},

keywords = {aerosol profiles, ceilometer, LIDAR, volcanic aerosol, volcanic eruption},

pubstate = {published},

tppubtype = {article}

}

@article{Mateos2026,

title = {Saharan and Arabian dust optical properties registered by sun photometry during A-LIFE field experiment in Cyprus},

author = {D. Mateos and C. Toledano and A. Calle and R. Román and M. Herreras-Giralda and R. González and S. Herrero-Anta and D. González-Fernández and C. Herrero-del Barrio and A. Nisantzi and R. E. Mamouri and S. Groß and V. E. Cachorro and Á. M. Frutos and B. Weinzierl},

url = {https://acp.copernicus.org/articles/26/1993/2026/},

doi = {10.5194/acp-26-1993-2026},

year  = {2026},

date = {2026-02-09},

urldate = {2026-01-01},

journal = {Atmospheric Chemistry and Physics},

volume = {26},

number = {3},

pages = {1993–2005},

keywords = {A-LIFE, aerosol optical properties, columnar optical properties, desert dust, sun photometry},

pubstate = {published},

tppubtype = {article}

}

@article{Pulimeno2026,

title = {Recent advances in aerosol optical depth measurements in polar regions: insights from the Polar-AOD Program},

author = {S. Pulimeno and A. Lupi and V. Vitale and C. Frangipani and C. Toledano and S. Kazadzis and N. Kouremeti and C. Ritter and S. Graßl and K. Stebel and V. Fioletov and I. Abboud and S. Blindheim and L. Ma and N. O'Neill and P. Sobolewski and P. Gupta and E. Lind and T. F. Eck and A. Hyvärinen and V. Aaltonen and R. Kivi and J. Csavina and D. Kabanov and S. M. Sakerin and O. R. Sidorova and R. S. Stone and H. Telg and L. Riihimaki and R. R. Cordero and M. Radenz and R. Engelmann and M. Van Roozendal and A. Chaikovsky and P. Goloub and J. Hisamitsu and M. Mazzola},

url = {https://acp.copernicus.org/articles/26/1809/2026/},

doi = {10.5194/acp-26-1809-2026},

year  = {2026},

date = {2026-02-05},

urldate = {2026-01-01},

journal = {Atmospheric Chemistry and Physics},

volume = {26},

number = {3},

pages = {1809–1846},

keywords = {Angstrom Exponent, AOD, long-term trends, lunar photometry, Polar Regions, stellar photometry},

pubstate = {published},

tppubtype = {article}

}

@article{Herrero-Anta2026,

title = {Exceptional high AOD over Svalbard in summer 2019: a multi-instrumental approach},

author = {S. Herrero-Anta and S. Eckhardt and N. Evangeliou and S. Gilardoni and S. Graßl and D. Heslin-Rees and S. Kazadzis and N. Kouremeti and R. Krejci and D. Mateos and M. Mazzola and C. Ritter and R. Román and K. Stebel and T. Zielinski},

url = {https://acp.copernicus.org/articles/26/1435/2026/},

doi = {10.5194/acp-26-1435-2026},

year  = {2026},

date = {2026-01-28},

urldate = {2026-01-01},

journal = {Atmospheric Chemistry and Physics},

volume = {26},

number = {2},

pages = {1435–1457},

keywords = {AOD, Arctic, LIDAR, multi-instrument analysis},

pubstate = {published},

tppubtype = {article}

}

@article{amt-18-4809-2025,

title = {Adaptation of the CIMEL-318T to shipborne use: 3 years of automated AERONET-compatible aerosol measurements on board the research vessel textitMarion Dufresne},

author = {B. Torres and L. Blarel and P. Goloub and G. Dubois and M. F. Sanchez-Barrero and I. E. Popovici and F. Maupin and E. Lind and A. Smirnov and I. Slutsker and J. Chimot and R. González and M. Sicard and J. M. Metzger and P. Tulet},

url = {https://amt.copernicus.org/articles/18/4809/2025/},

doi = {10.5194/amt-18-4809-2025},

year  = {2025},

date = {2025-09-26},

urldate = {2025-01-01},

journal = {Atmospheric Measurement Techniques},

volume = {18},

number = {18},

pages = {4809–4838},

keywords = {Aerosol Properties, marine aerosol, shipborne CIMEL},

pubstate = {published},

tppubtype = {article}

}

@article{Román2025,

title = {Star photometry with all-sky cameras to retrieve aerosol optical depth at nighttime},

author = {R. Román and D. González-Fernández and J. C. Antuña-Sánchez and C. Herrero del Barrio and S. Herrero-Anta and Á. Barreto and V. E. Cachorro and L. Doppler and R. González and C. Ritter and D. Mateos and N. Kouremeti and G. Copes and A. Calle and M. J. Granados-Muñoz and C. Toledano and Á. M. Frutos},

url = {https://amt.copernicus.org/articles/18/2847/2025/},

doi = {10.5194/amt-18-2847-2025},

year  = {2025},

date = {2025-07-04},

urldate = {2025-07-04},

journal = {Atmospheric Measurement Techniques},

volume = {18},

number = {13},

pages = {2847–2875},

keywords = {all-sky camera, AOD, star photometry},

pubstate = {published},

tppubtype = {article}

}

@article{Añel2025b,

title = {Nineteenth- and twentieth-century semi-quantitative surface ozone along subtropical European to tropical Africa Atlantic coasts},

author = {J. A. Añel and J. -C. Antuña-Marrero and A. Cid Samamed and C. Pérez-Souto and L. Torre and M. A. Valente and Y. Brugnara and A. Saiz-Lopez and L. Gimeno},

url = {https://essd.copernicus.org/articles/17/2437/2025/},

doi = {10.5194/essd-17-2437-2025},

year  = {2025},

date = {2025-06-06},

urldate = {2025-01-01},

journal = {Earth System Science Data},

volume = {17},

number = {6},

pages = {2437–2446},

keywords = {dataset, pre-industrial era, tropospheric ozone},

pubstate = {published},

tppubtype = {article}

}

@article{BLUM2025113476,

title = {Geometric calibration of all-sky cameras using sun and moon positions: A comprehensive analysis},

author = {Niklas Blum and Paul Matteschk and Yann Fabel and Bijan Nouri and Roberto Román and Luis F. Zarzalejo and Juan Carlos Antuña-Sánchez and Stefan Wilbert},

url = {https://www.sciencedirect.com/science/article/pii/S0038092X25002397},

doi = {https://doi.org/10.1016/j.solener.2025.113476},

issn = {0038-092X},

year  = {2025},

date = {2025-03-24},

urldate = {2025-01-01},

journal = {Solar Energy},

volume = {295},

pages = {113476},

abstract = {All-sky imagers (ASIs) have been applied to enable accurate very-short-term forecasts of the production of solar power plants and to derive measurements which facilitate the efficient and reliable operation of such plants. Overall, ASIs can support the grid integration and efficient operation of solar power plants. These tasks often require to reconstruct ‘world coordinates’ of observed scene points from their position in the ASI images. This requires a practically feasible geometric calibration of each ASI regarding camera-intrinsic lens distortion parameters and the ASI’s external orientation. We present ‘SuMo’ an open-source Python tool which determines all relevant parameters only using regular ASI images of Sun and Moon. The method avoids a manual interference on-site, can be applied retrospectively and can also be used to continuously monitor an ASI’s geometric calibration. We validate the calibration method on five cameras at three sites and over various datasets representing different seasons, atmospheric conditions, exposure times and sun/ moon elevation and azimuth angles. Already a single month of images from either summer or winter yields an accurate calibration (RMSE ?0.14?). A comparable calibration accuracy (RMSE 0.14 – 0.38?) could be achieved for all tested ASIs without modifying any of the method’s parameters. Image quality moderately influenced the calibration accuracy. An additional cross-validation with the star-based ORION calibration method further confirms the high accuracy of our method over the entire sky dome (MAE 0.14?). We provide a Python package and >2 years of ASI images and irradiance measurements with the publication.},

keywords = {All-sky imager, Celestial bodies, External orientation, Geometric calibration, Intrinsic calibration, sky camera},

pubstate = {published},

tppubtype = {article}

}

@article{Antuña-Marrero2025b,

title = {Comparing Integrated Water Vapor Sun Photometer Observations Over the Arctic With ERA5 and MERRA-2 Reanalyses},

author = {J. C. Antuña-Marrero and R. Román and V. E. Cachorro and D. Mateos and C. Toledano and A. Calle and J. C. Antuña-Sánchez and R. Gonzalez and M. Antón and J. Vaquero-Martínez and Á.  M. Frutos Baraja},

url = {https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2024JD041120},

doi = {https://doi.org/10.1029/2024JD041120},

year  = {2025},

date = {2025-03-17},

urldate = {2025-01-01},

journal = {Journal of Geophysical Research: Atmospheres},

volume = {130},

number = {6},

pages = {e2024JD041120},

abstract = {Abstract Atmospheric water vapor, a greenhouse gas, is increasing in the Arctic. It is a scientific challenge to understand the causes for this increase and determine adaptation and mitigation actions to confront its climatic effects. During the last decades, spatial and temporal coverage of water vapor satellite observations increased notably, and reanalysis water vapor estimates have steadily improved. However, the scarce spatial and temporal coverage in the Arctic of integrated water vapor (IWV) surface-based observations limits the representativeness of satellite observations and reanalysis estimate validations. Recently, we validated sun photometer IWV (IWVsp) observations with IWV from radiosondes in the Arctic. Here, we compare the hourly means of IWVsp from 13 Arctic AERONET stations and the IWV from ERA-5 and MERRA-2 reanalyses. The comparison is conducted at hourly timescale for individual stations for two Arctic regions and for the whole Arctic. The comparison showed a moist bias of IWV from reanalyses with respect to IWVsp. The individual station wise pattern shows slightly better accuracy and precision for ERA5 than for MERRA-2 also evident at the selected subregional scale. The differences of IWV from ERA5 and MERRA-2 and IWVsp show no dependence on IWVsp nor the solar zenith angle. This study corroborates that IWVsp may be used for validations of satellite IWV observations and IWV reanalyses products.},

note = {e2024JD041120 2024JD041120},

keywords = {AERONET, Arctic, Integrated water vapor, reanalysis, sunphotometer},

pubstate = {published},

tppubtype = {article}

}

@article{Añel2025,

title = {The Need for Better Monitoring of Climate Change in the Middle and Upper Atmosphere},

author = {Juan A. Añel and Ingrid Cnossen and Juan Carlos Antuña-Marrero and Gufran Beig and Matthew K. Brown and Eelco Doornbos and Scott Osprey and Shaylah Maria Mutschler and Celia Pérez Souto and Petr Šácha and Viktoria Sofieva and Laura de la Torre and Shun-Rong Zhang and Martin G. Mlynczak},

url = {https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2024AV001465},

doi = {https://doi.org/10.1029/2024AV001465},

year  = {2025},

date = {2025-02-28},

urldate = {2025-01-01},

journal = {AGU Advances},

volume = {6},

number = {2},

pages = {e2024AV001465},

abstract = {Abstract Anthropogenic greenhouse gas emissions significantly impact the middle and upper atmosphere. They cause cooling and thermal shrinking and affect the atmospheric structure. Atmospheric contraction results in changes in key atmospheric features, such as the stratopause height or the peak ionospheric electron density, and also results in reduced thermosphere density. These changes can impact, among others, the lifespan of objects in low Earth orbit, refraction of radio communication and GPS signals, and the peak altitudes of meteoroids entering the Earth's atmosphere. Given this, there is a critical need for observational capabilities to monitor the middle and upper atmosphere. Equally important is the commitment to maintaining and improving long-term, homogeneous data collection. However, capabilities to observe the middle and upper atmosphere are decreasing rather than improving.},

note = {e2024AV001465 2024AV001465},

keywords = {climate change, Earth observation, middle atmosphere, space debris, upper atmosphere},

pubstate = {published},

tppubtype = {article}

}

@article{Añel2025c,

title = {The Need for Better Monitoring of Climate Change in the Middle and Upper Atmosphere},

author = {Juan A. Añel and Ingrid Cnossen and Juan Carlos Antuña-Marrero and Gufran Beig and Matthew K. Brown and Eelco Doornbos and Scott Osprey and Shaylah Maria Mutschler and Celia Pérez Souto and Petr Šácha and Viktoria Sofieva and Laura de la Torre and Shun-Rong Zhang and Martin G. Mlynczak},

url = {https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2024AV001465},

doi = {https://doi.org/10.1029/2024AV001465},

year  = {2025},

date = {2025-02-28},

urldate = {2025-02-28},

journal = {AGU Advances},

volume = {6},

number = {2},

pages = {e2024AV001465},

abstract = {Abstract Anthropogenic greenhouse gas emissions significantly impact the middle and upper atmosphere. They cause cooling and thermal shrinking and affect the atmospheric structure. Atmospheric contraction results in changes in key atmospheric features, such as the stratopause height or the peak ionospheric electron density, and also results in reduced thermosphere density. These changes can impact, among others, the lifespan of objects in low Earth orbit, refraction of radio communication and GPS signals, and the peak altitudes of meteoroids entering the Earth's atmosphere. Given this, there is a critical need for observational capabilities to monitor the middle and upper atmosphere. Equally important is the commitment to maintaining and improving long-term, homogeneous data collection. However, capabilities to observe the middle and upper atmosphere are decreasing rather than improving.},

note = {e2024AV001465 2024AV001465},

keywords = {climate change, Earth observation, middle atmosphere, space debris, upper atmosphere},

pubstate = {published},

tppubtype = {article}

}

@article{Antuña-Marrero2025,

title = {A Long and Fruitful Cooperation in Atmospheric Aerosol Research between Cuba and Spain},

author = {Juan Carlos Antuña-Marrero and Ángel Frutos and Rene Estevan and Victoria Cachorro and Boris Barja and Sandra Mogo and Albeht Rodríguez-Vega and Carlos Toledano and Frank García and David Mateos and Juan Carlos Antuña-Sánchez and Ramiro González and Jorge Rosas and Roberto Román and Luis Enrique Ramos-Guadalupe and Abel Calle and Iralmy Y. Platero and Carlos Hernández and Nelson Díaz and Joel Díaz},

url = {https://journals.ametsoc.org/view/journals/bams/106/2/BAMS-D-23-0138.1.xml},

doi = {10.1175/BAMS-D-23-0138.1},

year  = {2025},

date = {2025-02-21},

urldate = {2025-01-01},

journal = {Bulletin of the American Meteorological Society},

volume = {106},

number = {2},

pages = {E364 - E377},

publisher = {American Meteorological Society},

address = {Boston MA, USA},

abstract = {Cuban and Spanish scientists have been studying the properties of atmospheric aerosols in Camagüey, Cuba, for more than 15?years, achieving notable scientific results at the local, regional, and global levels. Using instruments and expertise supplied by Spain, Cuban scientists have characterized local aerosol optical and microphysical properties and their chemical composition and optical absorbing properties. Aerosol optical depth (AOD) and Ångström exponent observations were used to validate MODIS satellite observations and broadband AOD from local pyrheliometers. Sun photometer cloud optical depth allowed us to characterize local cloudiness and its radiative forcing. Scientific work included climatologies of the solar radiation for the last four decades at Camagüey and of aerosols in the Caribbean basin in the last two decades. Another result was designing, building, and processing of a low-cost all-sky camera. Besides scientific results, the cooperation allowed the Cuban sun photometer observations to contribute to the Red Ibérica de Medida Fotométrica de Aerosoles and AERONET. A workshop celebrating 10?years of cooperation was held at Camagüey in 2016. The workshop participants evaluated the progress, difficulties, and challenges and inaugurated a Spanish angular calibration bench for solar radiation sensors at Camagüey. The workshop also included the first visit of a NASA scientist to Cuba, the only one visit. Cuban scientists became members of the International Science Team of the NASA Tropospheric Emissions: Monitoring of Pollution (TEMPO) satellite mission, just launched, participating in its prelaunch activities. Considering the joint capabilities we developed, Cuban–Spanish contribution is expected for the TEMPO postlaunch validation campaign.},

keywords = {aerosol optical properties, Aerosols, atmosphere, Central America, In situ atmospheric observations, Radiation},

pubstate = {published},

tppubtype = {article}

}

@article{Herrero-Anta2025,

title = {Impact of cloud presence on sky radiances and the retrieval of aerosol properties},

author = {Sara Herrero-Anta and Roberto Román and Daniel González-Fernández and Claudia Emde and David Mateos and Celia Herrero Barrio and Ramiro González and Oleg Dubovik and Carlos Toledano and Abel Calle and Victoria E. Cachorro and Bernhard Mayer and Ángel M. de Frutos},

url = {https://www.sciencedirect.com/science/article/pii/S0169809525000304},

doi = {https://doi.org/10.1016/j.atmosres.2025.107938},

issn = {0169-8095},

year  = {2025},

date = {2025-01-18},

urldate = {2025-01-01},

journal = {Atmospheric Research},

volume = {317},

pages = {107938},

abstract = {This paper explores the influence of the presence of clouds on sky radiances. It also analyses their impact on the retrieval of aerosol properties when using an inversion algorithm whose radiative transfer model (RTM) is designed for cloud-free atmospheres. For that, synthetic observations are simulated for 9 partially cloudy skies and for their equivalent cloud-free skies, considering 16 different aerosol scenarios. A parameter named cloud enhancement factor (CEF) has been used to determine the modifications induced in the sky radiances by each partially cloudy scenario with respect to the cloud-free sky. This parameter indicates that the sky radiances remaining after applying a cloud-screening are affected by the presence of clouds. In general, they show enhancements between 0 and 20 % with respect to the cloud-free radiances, depending on the cloudy conditions and the scattering angle. The synthetic observations used as input for the retrieval of aerosol properties are the ones required by the inversion strategy used, GRASPpac: the aerosol optical depth (AOD) and sky radiances at 4 different wavelengths together with the ceilometer range corrected signal (RCS). In partially cloudy scenarios with low CEFs, the aerosol properties do not present significant changes with respect to the cloud-free conditions. However, for partially cloudy scenarios with higher CEFs, a clear differentiation between the aerosol optical properties retrieved with and without clouds is observed. In these scenarios, the precision of the retrieval is similar for both conditions, but the accuracy is lower for the cloudy conditions. In particular, under partially cloudy conditions, it is observed an overestimation of the real refractive index (RRI) and the single scattering albedo (SSA) between 0.05 and 0.06 and between 0.03 and 0.06 respectively, and an underestimation of the asymmetry factor (g) and the imaginary refractive index (IRI) of about ?0.02 and ? 0.005, respectively. These values slightly vary with the aerosol load and wavelength for the RRI and SSA. The effects on the size distribution parameters are very small, concluding that the impact of clouds is noticeable in the optical properties but not so much in the microphysical part.},

keywords = {Aerosols, clouds, Enhancement effect, GRASP, sky radiance},

pubstate = {published},

tppubtype = {article}

}

@article{García2025,

title = {Aerosol retrievals derived from a low-cost Calitoo sun-photometer taken on board a research vessel},

author = {Rosa D. García and África Barreto and Celia Rey and Eugenio Fraile-Nuez and Alba González-Vega and Sergio F. León-Luis and Antonio Alcantara and A. Fernando Almansa and Carmen Guirado-Fuentes and Pablo González-Sicilia and Victoria E. Cachorro and Frederic Bouchar},

url = {https://www.sciencedirect.com/science/article/pii/S1352231024005636},

doi = {https://doi.org/10.1016/j.atmosenv.2024.120888},

issn = {1352-2310},

year  = {2025},

date = {2025-01-15},

urldate = {2025-01-15},

journal = {Atmospheric Environment},

volume = {341},

pages = {120888},

abstract = {This study presents a comprehensive 5-year period assessment of aerosol optical depth (AOD) and Å ngströn Exponent (AE) data from a hand-held Calitoo sun photometer on board the Ángeles Alvariño research vessel. Observations spanned March 2018 to September 2023, focusing on key maritime regions such as the Canary Islands, coasts of North Africa, the Mediterranean, Portugal, the Cantabrian, and the Bay of Biscay. The Calitoo device measures solar irradiance at three wavelengths (465, 540, and 619 nm). Uncertainty analysis for Calitoo AOD retrievals was performed using the Monte Carlo method, yielding an expanded uncertainty (UAOD) ranging between 0.008 and 0.050 with a mean and standard deviation of 0.032 ± 0.008 for the three wavelengths. Our results also highlight the remarkable calibration stability of the Calitoo (< 2.6%) over this 5-year period. Calitoo AOD values were assessed using reference AOD data from Santa Cruz de Tenerife (the Canary Islands), El Arenosillo (Huelva), and Palma de Mallorca (the Balearic Islands) AERONET (Aerosol Robotic Network) stations. The comparison revealed a good agreement with correlation coefficients ranging from 0.727 to 0.917 and mean bias ranging from -0.030 to -0.001. Additionally, the Calitoo AOD data were compared with MODIS (Moderate Resolution Imaging Spectroradiometer) and CAMS-ECMWF (Copernicus Atmosphere Monitoring Service-European Centre for Medium-Range Weather Forecasts) aerosol products obtaining that Calitoo AOD values were generally lower, showing negative mean bias of -0.063 and -0.024, respectively. The aerosol characterizations using AE vs. AOD plots in the three maritime study regions using 5-years of non-routine Calitoo data are similar to the corresponding aerosol characterizations performed with simultaneous AERONET-Cimel data. These findings underscore Calitoo’s reliability for aerosol studies in regions where AERONET instruments or other aerosol networks are unavailable. Likewise, given the low cost of Calitoo photometers, they could be deployed onboard a large number of merchant and passenger ships or in other remote or under-monitored areas, providing near real-time AOD/AE data to enhance our understanding of aerosols processes or for model or satellite assimilation/validation.},

keywords = {AERONET-cimel, aerosol optical depth, Calitoo sunphotometer, CAMS, MODIS},

pubstate = {published},

tppubtype = {article}

}

@article{https://doi.org/10.1029/2024JD041120,

title = {Comparing Integrated Water Vapor Sun Photometer Observations Over the Arctic With ERA5 and MERRA-2 Reanalyses},

author = {J. C. Antuña-Marrero and R. Román and V. E. Cachorro and D. Mateos and C. Toledano and A. Calle and J. C. Antuña-Sánchez and R. Gonzalez and M. Antón and J. Vaquero-Martínez and Á.  M. Frutos Baraja},

url = {https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2024JD041120},

doi = {https://doi.org/10.1029/2024JD041120},

year  = {2025},

date = {2025-01-01},

urldate = {2025-01-01},

journal = {Journal of Geophysical Research: Atmospheres},

volume = {130},

number = {6},

pages = {e2024JD041120},

abstract = {Abstract Atmospheric water vapor, a greenhouse gas, is increasing in the Arctic. It is a scientific challenge to understand the causes for this increase and determine adaptation and mitigation actions to confront its climatic effects. During the last decades, spatial and temporal coverage of water vapor satellite observations increased notably, and reanalysis water vapor estimates have steadily improved. However, the scarce spatial and temporal coverage in the Arctic of integrated water vapor (IWV) surface-based observations limits the representativeness of satellite observations and reanalysis estimate validations. Recently, we validated sun photometer IWV (IWVsp) observations with IWV from radiosondes in the Arctic. Here, we compare the hourly means of IWVsp from 13 Arctic AERONET stations and the IWV from ERA-5 and MERRA-2 reanalyses. The comparison is conducted at hourly timescale for individual stations for two Arctic regions and for the whole Arctic. The comparison showed a moist bias of IWV from reanalyses with respect to IWVsp. The individual station wise pattern shows slightly better accuracy and precision for ERA5 than for MERRA-2 also evident at the selected subregional scale. The differences of IWV from ERA5 and MERRA-2 and IWVsp show no dependence on IWVsp nor the solar zenith angle. This study corroborates that IWVsp may be used for validations of satellite IWV observations and IWV reanalyses products.},

note = {e2024JD041120 2024JD041120},

keywords = {AERONET, Arctic, Integrated water vapor, reanalysis, sunphotometer},

pubstate = {published},

tppubtype = {article}

}

@article{torres2025cimelshipborn,

title = {Adaptation of the CIMEL-318T to Shipborne Use: Three Years of Automated AERONET-Compatible Aerosol Measurements Onboard the Research Vessel Marion Dufresne},

author = {B. Torres and L. Blarel and P. Goloub and G. Dubois and M. F. Sanchez-Barrero and I. E. Popovici and F. Maupin and E. Lind and A. Smirnov and I. Slutsker and J. Chimot and R. Gonzalez and M. Sicard and J. M. Metzger and P. Tulet},

url = {https://egusphere.copernicus.org/preprints/2025/egusphere-2025-1356/},

doi = {10.5194/egusphere-2025-1356},

year  = {2025},

date = {2025-01-01},

journal = {EGUsphere},

volume = {2025},

pages = {1–43},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{delBarrio2024h,

title = {CAECENET: An automatic system processing photometer and ceilometer data from different networks to provide columnar and vertically-resolved aerosol properties},

author = {Celia Herrero del Barrio and Roberto Román and Ramiro González and Alberto Cazorla and Marcos Herreras-Giralda and Juan Carlos Antuña-Sánchez and Francisco Molero and Francisco Navas-Guzmán and Antonio Serrano and María Ángeles Obregón and Yolanda Sola and Marco Pandolfi and Sara Herrero-Anta and Daniel González-Fernández and Jorge Muñiz-Rosado and David Mateos and Abel Calle and Carlos Toledano and Victoria E. Cachorro and Ángel M. de Frutos},

doi = {10.1371/journal.pone.0311990},

year  = {2024},

date = {2024-12-27},

urldate = {2024-12-27},

journal = {PloS one},

volume = {19},

number = {12},

pages = {e0311990},

publisher = {Public Library of Science San Francisco, CA USA},

keywords = {aerosol, caecenet, ceilometer, Sun photometer},

pubstate = {published},

tppubtype = {article}

}