气候变化领域集成服务门户(CCPortal): Characterization of forest fire and Saharan desert dust aerosols over south-western Europe using a multi-wavelength Raman lidar and Sun-photometer

CCPortal

DOI	10.1016/j.atmosenv.2021.118346
	Characterization of forest fire and Saharan desert dust aerosols over south-western Europe using a multi-wavelength Raman lidar and Sun-photometer
	Salgueiro V.; Costa M.J.; Guerrero-Rascado J.L.; Couto F.T.; Bortoli D.
发表日期	2021
ISSN	1352-2310
卷号	252
英文摘要	In the morning of 21 July 2019, a dense forest fire smoke plume was detected over Évora (Portugal) in the lower troposphere. Around 13:00 UTC, a Sahara dust layer was detected by lidar between 3000 and 4000 m height above sea level. In this work results of these events using an EARLINET Raman lidar and AERONET Sun-photometer measurements are reported and discussed: the dense smoke layer, the mixing of smoke with dust and the lofted dust layer that crossed Évora. During the morning, in-situ hourly mean black carbon concentration reached a maximum of 6.28 ± 0.73 μgm−3. The AERONET fine mode aerosol optical depth at 500 nm reached 0.77 and the Ångström exponent at 440–870 nm varied between 1.45 and 1.82, indicating the presence of fine smoke particles in the atmospheric column. In the beginning of the afternoon, the lidar profiles indicated the presence of a smoke layer followed by two thin layers of pollution mixed with dust and a lofted dust layer. The smoke particles caused low particle linear depolarization ratios at 532 nm with mean value of 0.059 ± 0.002 in the smoke layer. In contrast, the lofted dust layer caused mean particle linear depolarization ratio at 532 nm of 0.26 ± 0.01. Mass concentrations were in the order of 22–29 μg m−3 in the smoke layer and 60–178 μg m−3 in the lofted dust layer. During the afternoon and at night, mixing dust layers were identified by using lidar data. In the afternoon, two aerosol layers exhibited mean particle linear depolarization ratios at 532 nm of 0.23 ± 0.01 and 0.25 ± 0.01 with the dust dominating the extinction and mass concentration in both aerosol layers. Mass concentrations of dust were in the order of 101–266 μg m−3 and 159–195 μg m−3. At night, the particle linear depolarization ratio presented low variability across the identified layer with mean value of 0.20 ± 0.01. The Ångström exponents were low, the mean lidar ratios were 50 ± 6 sr (355 nm) and 42 ± 4 sr (532 nm) and the aerosol optical depth was 0.32 (355 nm) and 0.30 (532 nm). Mass concentrations ranged in 10–28 μg m−3 for non-dust and in 77–186 μg m−3 for dust. © 2021 Elsevier Ltd
关键词	Aerosol microphysical properties Aerosol optical properties Desert dust Raman lidar Smoke Sun-photometer
语种	英语
scopus关键词	Deforestation; Depolarization; Dust; Factorization; Fire hazards; Fires; Mixing; Optical properties; Optical radar; Photometry; Sea level; Smoke; AERONET; Aerosol microphysical property; Aerosol optical property; Desert dust; Dust layer; Linear depolarization ratios; Mass concentration; Raman LIDAR; Smoke layer; Sun photometers; Aerosols; black carbon; AERONET; aerosol; atmospheric pollution; black carbon; concentration (composition); dust; forest fire; lidar; optical depth; particle size; photometer; smoke; troposphere; wavelength; aerosol; altitude; Article; boundary layer; depolarization; desert; dust; Eucalyptus; forest fire; mass; pine; plume; priority journal; smoke; Southern Europe; Western Europe; Portugal; Sahara
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248508
作者单位	Instituto de Ciências da Terra – ICT (Polo de Évora), Évora, Portugal; Earth Remote Sensing Laboratory (EaRSLab), Évora, Portugal; Universidade de Évora, Rua Romão Ramalho 59, Évora, 7000-671, Portugal; Universidade de Évora, Departamento de Física, Escola de Ciências e Tecnologia, Rua Romão Ramalho, 59, Évora, 7000-671, Portugal; Instituto de Investigación del Sistema Tierra en Andalucía (IISTA-CEAMA), Granada, 18006, Spain; Universidad de Granada, Departamento de Física Aplicada, Granada, 18071, Spain
推荐引用方式 GB/T 7714	Salgueiro V.,Costa M.J.,Guerrero-Rascado J.L.,et al. Characterization of forest fire and Saharan desert dust aerosols over south-western Europe using a multi-wavelength Raman lidar and Sun-photometer[J],2021,252.
APA	Salgueiro V.,Costa M.J.,Guerrero-Rascado J.L.,Couto F.T.,&Bortoli D..(2021).Characterization of forest fire and Saharan desert dust aerosols over south-western Europe using a multi-wavelength Raman lidar and Sun-photometer.ATMOSPHERIC ENVIRONMENT,252.
MLA	Salgueiro V.,et al."Characterization of forest fire and Saharan desert dust aerosols over south-western Europe using a multi-wavelength Raman lidar and Sun-photometer".ATMOSPHERIC ENVIRONMENT 252(2021).