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@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}

}

@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 = {aerosol, all-sky camera, GRASP, retrieval},

pubstate = {published},

tppubtype = {article}

}

@article{Antuña-Marrero2021,

title = {Recovery of the first ever multi-year lidar dataset of the stratospheric aerosol layer, from Lexington, MA, and Fairbanks, AK, January 1964 to July 1965},

author = {J. C. Antuña-Marrero and G. W. Mann and J. Barnes and A. Rodríguez-Vega and S. Shallcross and S. S. Dhomse and G. Fiocco and G. W. Grams},

url = {https://essd.copernicus.org/articles/13/4407/2021/},

doi = {10.5194/essd-13-4407-2021},

year  = {2021},

date = {2021-09-08},

urldate = {2021-01-01},

journal = {Earth System Science Data},

volume = {13},

number = {9},

pages = {4407--4423},

abstract = {We report the recovery and processing methodology of the first ever multi-year lidar dataset of the stratospheric aerosol layer. A Q-switched ruby lidar measured 66 vertical profiles of 694?nm attenuated backscatter at Lexington, Massachusetts, between January 1964 and August 1965, with an additional nine profile measurements conducted from College, Alaska, during July and August 1964. We describe the processing of the recovered lidar backscattering ratio profiles to produce mid-visible (532?nm) stratospheric aerosol extinction profiles (sAEP532) and stratospheric aerosol optical depth (sAOD532) measurements, utilizing a number of contemporary measurements of several different atmospheric variables. Stratospheric soundings of temperature and pressure generate an accurate local molecular backscattering profile, with nearby ozone soundings determining the ozone absorption, which are used to correct for two-way ozone transmittance. Two-way aerosol transmittance corrections are also applied based on nearby observations of total aerosol optical depth (across the troposphere and stratosphere) from sun photometer measurements. We show that accounting for these two-way transmittance effects substantially increases the magnitude of the 1964/1965 stratospheric aerosol layer's optical thickness in the Northern Hemisphere mid-latitudes, then ??50?% larger than represented in the Coupled Model Intercomparison Project 6 (CMIP6) volcanic forcing dataset. Compared to the uncorrected dataset, the combined transmittance correction increases the sAOD532 by up to 66?% for Lexington and up to 27?% for Fairbanks, as well as individual sAEP532 adjustments of similar magnitude. Comparisons with the few contemporary measurements available show better agreement with the corrected two-way transmittance values.



Within the January 1964 to August 1965 measurement time span, the corrected Lexington sAOD532 time series is substantially above 0.05 in three distinct periods, October 1964, March 1965, and May–June 1965, whereas the 6 nights the lidar measured in December 1964 and January 1965 had sAOD values of at most ??0.03. The comparison with interactive stratospheric aerosol model simulations of the Agung aerosol cloud shows that, although substantial variation in mid-latitude sAOD532 are expected from the seasonal cycle in the stratospheric circulation, the Agung cloud's dispersion from the tropics would have been at its strongest in winter and weakest in summer. The increasing trend in sAOD from January to July 1965, also considering the large variability, suggests that the observed variations are from a different source than Agung, possibly from one or both of the two eruptions that occurred in 1964/1965 with a Volcanic Explosivity Index (VEI) of 3: Trident, Alaska, and Vestmannaeyjar, Heimaey, south of Iceland. A detailed error analysis of the uncertainties in each of the variables involved in the processing chain was conducted. Relative errors for the uncorrected sAEP532 were 54?% for Fairbanks and 44?% Lexington. For the corrected sAEP532 the errors were 61?% and 64?%, respectively. The analysis of the uncertainties identified variables that with additional data recovery and reprocessing could reduce these relative error levels. Data described in this work are available at https://doi.org/10.1594/PANGAEA.922105 (Antuña-Marrero et al., 2020a).},

keywords = {aerosol, LIDAR},

pubstate = {published},

tppubtype = {article}

}

@article{zielinski2020studyb,

title = {Study of Chemical and Optical Properties of Biomass Burning Aerosols during Long-Range Transport Events toward the Arctic in Summer 2017},

author = {Tymon Zielinski and Ezio Bolzacchini and Marco Cataldi and Luca Ferrero and Sandra Graßl and Georg Hansen and David Mateos and Mauro Mazzola and Roland Neuber and Paulina Pakszys and Michal Posyniak and Christoph Ritter and Mirko Severi and Piotr Sobolewski and Rita Traversi and Cristian Velasco-Merino },

doi = {https://doi.org/10.3390/atmos11010084},

year  = {2020},

date = {2020-01-01},

urldate = {2020-01-01},

journal = {Atmosphere},

volume = {11},

number = {1},

pages = {84},

publisher = {Multidisciplinary Digital Publishing Institute},

keywords = {aerosol, aerosol optical depth, artic, biomass burning, long-range transport},

pubstate = {published},

tppubtype = {article}

}

@article{almansa2020column,

title = {Column Integrated Water Vapor and Aerosol Load Characterization with the New ZEN-R52 Radiometer},

author = {Antonio Fernando Almansa and Emilio Cuevas and África Barreto and Benjam{'i}n Torres and Omaira Elena Garc{'i}a and Rosa Delia Garc{'i}a and Cristian Velasco-Merino and Victoria Eugenia Cachorro and Alberto Berjón and Manuel Mallorquín and César López and Ramón Ramos and Carmen Guirado-Fuertes and Ramón Negrillo and Ángel M. de Frutos},

doi = {https://doi.org/10.3390/rs12091424},

year  = {2020},

date = {2020-01-01},

urldate = {2020-01-01},

journal = {Remote Sensing},

volume = {12},

number = {9},

pages = {1424},

publisher = {Multidisciplinary Digital Publishing Institute},

keywords = {aerosol, water vapour, ZEN-R52 Radiometer},

pubstate = {published},

tppubtype = {article}

}

@article{rs12223769,

title = {Characterization of Stratospheric Smoke Particles over the Antarctica by Remote Sensing Instruments},

author = {Ramiro González and Carlos Toledano and Roberto Román and David Mateos and Eija Asmi and Edith Rodríguez and Ian C Lau and Jonathan Ferrara and Raúl D’Elia and Juan Carlos Antuña-Sánchez and Victoria E Cachorro and Abel Calle and Ángel M de Frutos},

url = {https://www.mdpi.com/2072-4292/12/22/3769},

doi = {10.3390/rs12223769},

issn = {2072-4292},

year  = {2020},

date = {2020-01-01},

journal = {Remote Sensing},

volume = {12},

number = {22},

abstract = {Australian smoke from the extraordinary biomass burning in December 2019 was observed over Marambio, Antarctica from the 7th to the 10th January, 2020. The smoke plume was transported thousands of kilometers over the Pacific Ocean, and reached the Antarctic Peninsula at a hight of 13 km, as determined by satellite lidar observations. The proposed origin and trajectory of the aerosol are supported by back-trajectory model analyses. Ground-based Sun-Sky-Moon photometer belonging to the Aerosol Robotic Network (AERONET) measured aerosol optical depth (500 nm wavelength) above 0.3, which is unprecedented for the site. Inversion of sky radiances provide the optical and microphysical properties of the smoke over Marambio. The AERONET data near the fire origin in Tumbarumba, Australia, was used to investigate the changes in the measured aerosol properties after transport and ageing. The analysis shows an increase in the fine mode particle radius and a reduction in absorption (increase in the single scattering albedo). The available long-term AOD data series at Marambio suggests that smoke particles could have remained over Antarctica for several weeks after the analyzed event.},

keywords = {aerosol, Antarctica, Australian fires, biomass burning, optical properties, smoke ageing},

pubstate = {published},

tppubtype = {article}

}

@article{acp-20-14253-2020,

title = {New particle formation at urban and high-altitude remote sites in the south-eastern Iberian Peninsula},

author = {J A Casquero-Vera and H Lyamani and L Dada and S Hakala and P Paasonen and R Román and R Fraile and T Petäjä and F J Olmo-Reyes and L Alados-Arboledas},

url = {https://acp.copernicus.org/articles/20/14253/2020/},

doi = {10.5194/acp-20-14253-2020},

year  = {2020},

date = {2020-01-01},

journal = {Atmospheric Chemistry and Physics},

volume = {20},

number = {22},

pages = {14253--14271},

keywords = {aerosol, particle formation, urban},

pubstate = {published},

tppubtype = {article}

}

@article{acp-20-13627-2020,

title = {Evaluating the simulated radiative forcings, aerosol properties, and stratospheric warmings from the 1963 Mt Agung, 1982 El Chichón, and 1991 Mt Pinatubo volcanic aerosol clouds},

author = {S S Dhomse and G W Mann and J C Antuña Marrero and S E Shallcross and M P Chipperfield and K S Carslaw and L Marshall and N L Abraham and C E Johnson},

url = {https://acp.copernicus.org/articles/20/13627/2020/},

doi = {10.5194/acp-20-13627-2020},

year  = {2020},

date = {2020-01-01},

journal = {Atmospheric Chemistry and Physics},

volume = {20},

number = {21},

pages = {13627--13654},

keywords = {aerosol, Radiative forcing, volcanic aerosol},

pubstate = {published},

tppubtype = {article}

}

@article{Toledano2018,

title = {Assessment of Sun photometer Langley calibration at the high-elevation sites Mauna Loa and Izaña},

author = { C. Toledano and R. González and D. Fuertes and E. Cuevas and T. F. Eck and S. Kazadzis and N. Kouremeti and J. Gröbner and P. Goloub and L. Blarel and R. Román and Á. Barreto and A. Berjón and B. N. Holben and V. E. Cachorro},

doi = {https://doi.org/10.5194/acp-18-14555-2018},

year  = {2018},

date = {2018-10-10},

journal = {Atmospheric Chemistry and Physics},

volume = {18},

pages = {14555-14567},

keywords = {AERONET, aerosol, calibration, langley},

pubstate = {published},

tppubtype = {article}

}

@article{BedoyaACP2018,

title = {Hygroscopic growth study in the framework of EARLINET during the SLOPE I campaign: synergy of remote sensing and in-situ instrumentation},

author = {Bedoya-Velasquez, A. ;Navas-Guzmán, F. ;Granados-Muñoz, M.J. ;Titos, G. ;Román, R. ;Casquero-Vera, J.A. ;Ortiz-Amezcua, P. ;Benavent-Oltra, J.A. ;de Arruda-Moreira, G. ;Montilla, R. ;Hoyos-Ortiz, C.D. ;Artiñano, B. ;Coz, E. ;Olmo-Reyes, F.J. ;Alados-Arboledas, L. ;Guerrero-Rascado, J.L.},

doi = {https://doi.org/10.5194/acp-18-7001-2018},

year  = {2018},

date = {2018-01-01},

journal = {Atmospheric Chemistry and Physics},

volume = {18},

pages = {7001 - 7017},

keywords = {aerosol, hygroscopic, LIDAR, microwave radiometer, pbl, Water vapor},

pubstate = {published},

tppubtype = {article}

}

@article{BEDOYA2017ACPD,

title = {Hygroscopic growth study in the framework of EARLINET during the SLOPE I campaign: synergy of remote sensing and in-situ instrumentation },

author = {A. E. Bedoya-Velásquez, F. Navas-Guzmán, M. J. Granados-Muñoz, G. Titos, R. Roman, J. A. Casquero-Vera, P. Ortiz-Amezcua, J. A. Benavent-Oltra, G. de Arruda Moreira, E. Montilla-Rosero, C. D. Hoyos Ortiz, B. Artíñano, E. Coz, L. Alados-Arboledas and J. Luis Guerrero-Rascado},

url = {https://www.atmos-chem-phys-discuss.net/acp-2017-993/acp-2017-993.pdf},

doi = {10.5194/acp-2017-993},

year  = {2017},

date = {2017-01-01},

journal = {Atmospheric Chemistry and Physics Discussion},

keywords = {aerosol, higroscopicity, LIDAR},

pubstate = {published},

tppubtype = {article}

}

@article{Cazorla2017,

title = {Near-real-time processing of a ceilometer network assisted with sun-photometer data: monitoring a dust outbreak over the Iberian Peninsula},

author = { A. Cazorla and J. A. Casquero-Vera and R. Román and J. L. Guerrero-Rascado and C. Toledano and V. E. Cachorro and J. A. G. Orza and M. L. Cancillo and A. Serrano and G. Titos and M. Pandolfi and A. Alastuey and N. Hanrieder and L. Alados-Arboledas},

url = {https://www.atmos-chem-phys.net/17/11861/2017/},

doi = {10.5194/acp-17-11861-2017},

year  = {2017},

date = {2017-01-01},

journal = {Atmospheric Chemistry and Physics},

volume = {17},

number = {19},

pages = {11861-11876},

keywords = {aerosol, ceilometer, icenet},

pubstate = {published},

tppubtype = {article}

}

@article{GARCIA2015ACP,

title = {Climatology of new particle formation at Izaña mountain GAW observatory in the subtropical North Atlantic},

author = { M.I. García, S. Rodríguez, Y. González and R.D. García},

year  = {2014},

date = {2014-01-01},

journal = {Atmospheric Chemistry and Physics},

volume = {14},

number = {8},

pages = {3865-3881},

keywords = {aerosol},

pubstate = {published},

tppubtype = {article}

}

@article{LOPEZ2013AIP,

title = {Aerosol scattering optical properties by nephelometer measurements at the El Arenosillo site (SW coastal area of Spain)},

author = {J.F. López, V.E. Cachorro and A. de Frutos},

year  = {2013},

date = {2013-01-01},

journal = {AIP Conference Proceedings},

volume = {1531},

pages = {572-575},

keywords = {aerosol, in-situ},

pubstate = {published},

tppubtype = {article}

}