气候变化领域集成服务门户(CCPortal): Overview of the SLOPE i and II campaigns: Aerosol properties retrieved with lidar and sun-sky photometer measurements

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DOI	10.5194/acp-21-9269-2021
	Overview of the SLOPE i and II campaigns: Aerosol properties retrieved with lidar and sun-sky photometer measurements
	Benavent-Oltra J.A.; Casquero-Vera J.A.; Román R.; Lyamani H.; Pérez-Ramírez D.; Granados-Munõz M.J.; Herrera M.; Cazorla A.; Titos G.; Ortiz-Amezcua P.; Bedoya-Velásquez A.E.; De Arruda Moreira G.; Pérez N.; Alastuey A.; Dubovik O.; Guerrero-Rascado J.L.; Olmo-Reyes F.J.; Alados-Arboledas L.
发表日期	2021
ISSN	1680-7316
起始页码	9269
结束页码	9287
卷号	21 期号:12
英文摘要	The Sierra Nevada Lidar aerOsol Profiling Experiment I and II (SLOPE I and II) campaigns were intended to determine the vertical structure of aerosols by remote sensing instruments and test the various retrieval schemes for obtaining aerosol microphysical and optical properties with in situ measurements. The SLOPE I and II campaigns were developed during the summers of 2016 and 2017, respectively, combining active and passive remote sensing with in situ measurements at stations belonging to the AGORA observatory (Andalusian Global ObseRvatory of the Atmosphere) in the Granada area (Spain). In this work, we use the in situ measurements of these campaigns to evaluate aerosol properties retrieved by the GRASP code (Generalized Retrieval of Atmosphere and Surface Properties) combining lidar and sun-sky photometer measurements. We show an overview of aerosol properties retrieved by GRASP during the SLOPE I and II campaigns. In addition, we evaluate the GRASP retrievals of total aerosol volume concentration (discerning between fine and coarse modes), extinction and scattering coefficients, and for the first time we present an evaluation of the absorption coefficient. The statistical analysis of aerosol optical and microphysical properties, both column-integrated and vertically resolved, from May to July 2016 and 2017 shows a large variability in aerosol load and types. The results show a strong predominance of desert dust particles due to North African intrusions. The vertically resolved analysis denotes a decay of the atmospheric aerosols with an altitude up to 5 km a.s.l. Finally, desert dust and biomass burning events were chosen to show the high potential of GRASP to retrieve vertical profiles of aerosol properties (e.g. absorption coefficient and single scattering albedo) for different aerosol types. The aerosol properties retrieved by GRASP show good agreement with simultaneous in situ measurements (nephelometer, aethalometer, scanning mobility particle sizer, and aerodynamic particle sizer) performed at the Sierra Nevada Station (SNS) in Granada. In general, GRASP overestimates the in situ data at the SNS with a mean difference lower than 6 μm3 cm-3 for volume concentration, and 11 and 2 Mm-1 for the scattering and absorption coefficients. On the other hand, the comparison of GRASP with airborne measurements also shows an overestimation with mean absolute differences of 14 ± 10 and 1.2 ± 1.2 Mm-1 for the scattering and absorption coefficients, showing a better agreement for the absorption (scattering) coefficient with higher (lower) aerosol optical depth. The potential of GRASP shown in this study will contribute to enhancing the representativeness of the aerosol vertical distribution and provide information for satellite and global model evaluation. © 2021 Jose Antonio Benavent-Oltra et al.
语种	英语
scopus关键词	aerosol composition; aerosol property; clear sky; concentration (composition); lidar; measurement method; optical depth; photometer; remote sensing; satellite data; Andalucia; Betic Cordillera; Granada [Andalucia]; Sierra Nevada [Betic Cordillera]; Spain
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/246798
作者单位	Department of Civil Chemical and Environmental Engineering, University of Genoa, Genoa, Italy; Department of Applied Physics, Universidad de Granada, Granada, Spain; Andalusian Institute for Earth System Research, IISTA-CEAMA, Granada, Spain; Group of Atmospheric Optics (GOA-UVa), Universidad de Valladolid, Valladolid, Spain; Laboratoire d'Optique Atmosphérique (LOA), UMR8518 CNRS, Université de Lille, Villeneuve D'ASCQ, France; Institute of Geophysics, Faculty of Physics, University of Warsaw (IGFUW), Warsaw, Poland; French Aeorospace Lab, ONERA, Toulouse, France; Federal Institute of Saõ Paulo (IFSP), Campus Registro, Saõ Paulo, Brazil; Institute of Environmental Assessment and Water Research (IDAEA), CSIC, Barcelona, Spain
推荐引用方式 GB/T 7714	Benavent-Oltra J.A.,Casquero-Vera J.A.,Román R.,et al. Overview of the SLOPE i and II campaigns: Aerosol properties retrieved with lidar and sun-sky photometer measurements[J],2021,21(12).
APA	Benavent-Oltra J.A..,Casquero-Vera J.A..,Román R..,Lyamani H..,Pérez-Ramírez D..,...&Alados-Arboledas L..(2021).Overview of the SLOPE i and II campaigns: Aerosol properties retrieved with lidar and sun-sky photometer measurements.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(12).
MLA	Benavent-Oltra J.A.,et al."Overview of the SLOPE i and II campaigns: Aerosol properties retrieved with lidar and sun-sky photometer measurements".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.12(2021).