气候变化领域集成服务门户(CCPortal): Ceilometer inversion method using water-vapor correction from co-located microwave radiometer for aerosol retrievals

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DOI	10.1016/j.atmosres.2020.105379
	Ceilometer inversion method using water-vapor correction from co-located microwave radiometer for aerosol retrievals
	Bedoya-Velásquez A.E.; Herreras-Giralda M.; Román R.; Wiegner M.; Lefebvre S.; Toledano C.; Huet T.; Ceolato R.
发表日期	2021
ISSN	0169-8095
卷号	250
英文摘要	Recent ceilometer models are more sensitive to aerosols, which is increasing the interest in these instruments to retrieve aerosol optical and microphysical properties. In this paper, a new methodology is proposed to retrieve aerosol vertical extinction and backscatter profiles from a Vaisala ceilometer CL51 model. This methodology is based in two parts: first, a signal pre-processing with a suppression of the dark current and background noises, and a correction of the water vapor absorption using near-real-time temperature and absolute humidity (AH) profiles from a co-located Microwave radiometer (MWR). The measured dark current shows a height-dependence from 11 km agl to the end of the profile. From the water vapor correction, it was seen that the raw ceilometer signal overestimates the water vapor corrected one, mainly below 1 km agl. Second part is based on an iterative Klett-based algorithm making use of AERONET (AErosol RObotic NETwork) AOD (Aerosol Optical Depth) and ceilometer profiles as inputs to retrieve the extinction and backscatter profiles. The sensitivity of the aerosol retrievals to the use of modelled temperature and absolute humidity from HYSPLIT to correct water vapor absorption, instead of MWR measurements, is studied. The absolute errors found in temperature and AH profiles leads to errors in the pre-processed range corrected signals up to 9%, and then in particle backscatter (βp) and particle extinction (αp) coefficients up to 2.2 % and 25 %, respectively. © 2020 Elsevier B.V.
英文关键词	Aerosol inversion; Ceilometer data pre-processing; Microwave radiometry; Vaisala ceilometer
语种	英语
scopus关键词	Aerosols; Backscattering; Dark currents; Iterative methods; Meteorological instruments; Microwave devices; Microwave measurement; Radiometers; Water absorption; Aerosol optical depths; Aerosol retrieval; Aerosol robotic networks; Backscatter profiles; Microphysical property; Microwave radiometers; Particle extinction; Water-vapor absorption; Water vapor; AERONET; aerosol; correction; inverse analysis; microwave radiometer; water vapor
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162008
作者单位	The French Aeorospace Lab, ONERA/DOTA, Universite de Toulouse, Toulouse, F-31055, France; GRASP-SAS, Remote sensing developments, Université des Sciences et Technologies de Lille, Villeneuve d'Ascq, France; Laboratoire d'Optique Amosphérique, Université des Sciences et Technologies de Lille, Villeneuve d'Ascq, France; Grupo de Óptica Atmosférica, Universidad de Valladolid, Valladolid, Spain; Meteorologisches Institut, Ludwig-Maximilians-Universität, Theresienstraße 37, München, 80333, Germany; The French Aeorospace Lab, ONERA/DOTA, Universite Paris Saclay, Palaiseau, F-91123, France
推荐引用方式 GB/T 7714	Bedoya-Velásquez A.E.,Herreras-Giralda M.,Román R.,et al. Ceilometer inversion method using water-vapor correction from co-located microwave radiometer for aerosol retrievals[J],2021,250.
APA	Bedoya-Velásquez A.E..,Herreras-Giralda M..,Román R..,Wiegner M..,Lefebvre S..,...&Ceolato R..(2021).Ceilometer inversion method using water-vapor correction from co-located microwave radiometer for aerosol retrievals.Atmospheric Research,250.
MLA	Bedoya-Velásquez A.E.,et al."Ceilometer inversion method using water-vapor correction from co-located microwave radiometer for aerosol retrievals".Atmospheric Research 250(2021).