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DOI	10.5194/acp-19-14149-2019
	Different strategies to retrieve aerosol properties at night-time with the GRASP algorithm
	Benavent-Oltra J.A.; Román R.; Andrés Casquero-Vera J.; Pérez-Ramírez D.; Lyamani H.; Ortiz-Amezcua P.; Bedoya-Velásquez A.E.; De Arruda Moreira G.; Barreto A.; Lopatin A.; Fuertes D.; Herrera M.; Torres B.; Dubovik O.; Luis Guerrero-Rascado J.; Goloub P.; Olmo-Reyes F.J.; Alados-Arboledas L.
发表日期	2019
ISSN	16807316
起始页码	14149
结束页码	14171
卷号	19 期号:22
英文摘要	This study evaluates the potential of the GRASP algorithm (Generalized Retrieval of Aerosol and Surface Properties) to retrieve continuous day-to-night aerosol properties, both column-integrated and vertically resolved. The study is focused on the evaluation of GRASP retrievals during an intense Saharan dust event that occurred during the Sierra Nevada Lidar aerOsol Profiling Experiment I (SLOPE I) field campaign. For daytime aerosol retrievals, we combined the measurements of the ground-based lidar from EARLINET (European Aerosol Research Lidar Network) station and sun-sky photometer from AERONET (Aerosol Robotic Network), both instruments co-located in Granada (Spain). However, for night-time retrievals three different combinations of active and passive remote-sensing measurements are proposed. The first scheme (N0) uses lidar night-time measurements in combination with the interpolation of sun-sky daytime measurements. The other two schemes combine lidar night-time measurements with nighttime aerosol optical depth obtained by lunar photometry either using intensive properties of the aerosol retrieved during sun-sky daytime measurements (N1) or using the Moon aureole radiance obtained by sky camera images (N2). Evaluations of the columnar aerosol properties retrieved by GRASP are done versus standard AERONET retrievals. The coherence of day-to-night evolutions of the different aerosol properties retrieved by GRASP is also studied. The extinction coefficient vertical profiles retrieved by GRASP are compared with the profiles calculated by the Raman technique at night-time with differences below 30 % for all schemes at 355, 532 and 1064 nm. Finally, the volume concentration and scattering coefficient retrieved by GRASP at 2500 m a.s.l. are evaluated by in situ measurements at this height at Sierra Nevada Station. The differences between GRASP and in situ measurements are similar for the different schemes, with differences below 30 % for both volume concentration and scattering coefficient. In general, for the scattering coefficient, the GRASP N0 and N1 show better results than the GRASP N2 schemes, while for volume concentration, GRASP N2 shows the lowest differences against in situ measurements (around 10 %) for high aerosol optical depth values. © 2019 Author(s).
语种	英语
scopus关键词	AERONET; aerosol formation; aerosol property; algorithm; concentration (composition); numerical model; optical depth; satellite data; satellite imagery; California; Sahara; Sierra Nevada [California]; United States
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144026
作者单位	Department of Applied Physics, Universidad de Granada, Granada, 18071, Spain; Andalusian Institute for Earth System Research, IISTA-CEAMA, Granada, Spain; Grupo de Óptica Atmosférica (GOA), Universidad de Valladolid, Valladolid, Spain; Sciences Faculty, Department of Physics, Universidad Nacional de Colombia, Medellín, Colombia; Institute of Research and Nuclear Energy (IPEN), São Paulo, Brazil; Cimel Electronique, Paris, France; Izaña Atmospheric Research Center, Meteorological State Agency of Spain (AEMET), Izaña, Spain; GRASP-SAS Remote Sensing Developments, Université de Lille, Villeneuve D'ASCQ, 59655, France; Laboratoire d'Optique Atmosphérique (LOA), UMR8518 CNRS, Université de Lille, Villeneuve D'ASCQ, 59655, France
推荐引用方式 GB/T 7714	Benavent-Oltra J.A.,Román R.,Andrés Casquero-Vera J.,et al. Different strategies to retrieve aerosol properties at night-time with the GRASP algorithm[J],2019,19(22).
APA	Benavent-Oltra J.A..,Román R..,Andrés Casquero-Vera J..,Pérez-Ramírez D..,Lyamani H..,...&Alados-Arboledas L..(2019).Different strategies to retrieve aerosol properties at night-time with the GRASP algorithm.Atmospheric Chemistry and Physics,19(22).
MLA	Benavent-Oltra J.A.,et al."Different strategies to retrieve aerosol properties at night-time with the GRASP algorithm".Atmospheric Chemistry and Physics 19.22(2019).