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DOI	10.5194/amt-13-553-2020
	Aerosol retrievals from different polarimeters during the ACEPOL campaign using a common retrieval algorithm
	Fu, Guangliang 1; Hasekamp, Otto 1; Rietjens, Jeroen 1; Smit, Martijn 1; Di Noia, Antonio 2; Cairns, Brian 3; Wasilewski, Andrzej 4; Diner, David 5; Seidel, Felix 5; Xu, Feng 6; Knobelspiesse, K.7; Gao, Meng 7; da Silva, Arlindo M.7; Burton, Sharon 8; Hostetler, Chris 8; Hair, John 8; Ferrare, Richard 8
通讯作者	Fu, Guangliang ; Hasekamp, Otto
来源期刊	ATMOSPHERIC MEASUREMENT TECHNIQUES
ISSN	1867-1381
EISSN	1867-8548
出版年	2020
卷号	13 期号:2 页码:553-573
英文摘要	In this paper, we present aerosol retrieval results from the ACEPOL (Aerosol Characterization from Polarimeter and Lidar) campaign, which was a joint initiative between NASA and SRON - the Netherlands Institute for Space Research. The campaign took place in October-November 2017 over the western part of the United States. During ACEPOL six different instruments were deployed on the NASA ER-2 high-altitude aircraft, including four multi-angle polarimeters (MAPs): SPEX airborne, the Airborne Hyper Angular Rainbow Polarimeter (AirHARP), the Airborne Multi-angle SpectroPolarimetric Imager (AirMSPI), and the Research Scanning Polarimeter (RSP). Also, two lidars participated: the High Spectral Resolution Lidar-2 (HSRL-2) and the Cloud Physics Lidar (CPL). Flights were conducted mainly for scenes with low aerosol load over land, but some cases with higher AOD were also observed. We perform aerosol retrievals from SPEX airborne, RSP (410-865 nm range only), and AirMSPI using the SRON aerosol retrieval algorithm and compare the results against AERONET (AErosol RObotic NETwork) and HSRL-2 measurements (for SPEX airborne and RSP). All three MAPs compare well against AERONET for the aerosol optical depth (AOD), with a mean absolute error (MAE) between 0.014 and 0.024 at 440 nm. For the fine-mode effective radius the MAE ranges between 0.021 and 0.028 mu m. For the comparison with HSRL-2 we focus on a day with low AOD (0.02-0.14 at 532 nm) over the California Central Valley, Arizona, and Nevada (26 October) as well as a flight with high AOD (including measurements with AOD > 1:0 at 532 nm) over a prescribed forest fire in Arizona (9 November). For the day with low AOD the MAEs in AOD (at 532 nm) with HSRL-2 are 0.014 and 0.022 for SPEX and RSP, respectively, showing the capability of MAPs to provide accurate AOD retrievals for the challenging case of low AOD over land. For the retrievals over the smoke plume a reasonable agreement in AOD between the MAPs and HSRL-2 was also found (MAE 0.088 and 0.079 for SPEX and RSP, respectively), despite the fact that the comparison is hampered by large spatial variability in AOD throughout the smoke plume. A good comparison is also found between the MAPs and HSRL-2 for the aerosol depolarization ratio (a measure of particle sphericity), with an MAE of 0.023 and 0.016 for SPEX and RSP, respectively. Finally, SPEX and RSP agree very well for the retrieved microphysical and optical properties of the smoke plume.
类型	Article
语种	英语
国家	Netherlands ; England ; USA
开放获取类型	gold, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000513068600003
WOS关键词	SPECTRAL-RESOLUTION LIDAR ; RADIATIVE-TRANSFER MODEL ; RESEARCH SCANNING POLARIMETER ; LAND SURFACES ; OPTICAL DEPTH ; PHOTOPOLARIMETRIC MEASUREMENTS ; COUPLED RETRIEVAL ; LIGHT-SCATTERING ; DESERT DUST ; AIRBORNE
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314152
作者单位	1.NWO I, Netherlands Inst Space Res SRON, Utrecht, Netherlands; 2.Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England; 3.NASA, Goddard Inst Space Studies, New York, NY 10025 USA; 4.Trinnovim LLC, New York, NY USA; 5.CALTECH, NASA, Jet Prop Lab, Pasadena, CA USA; 6.Univ Oklahoma, Natl Weather Ctr, Sch Meteorol, Norman, OK 73019 USA; 7.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA; 8.NASA, Langley Res Ctr, Hampton, VA 23665 USA
推荐引用方式 GB/T 7714	Fu, Guangliang,Hasekamp, Otto,Rietjens, Jeroen,et al. Aerosol retrievals from different polarimeters during the ACEPOL campaign using a common retrieval algorithm[J],2020,13(2):553-573.
APA	Fu, Guangliang.,Hasekamp, Otto.,Rietjens, Jeroen.,Smit, Martijn.,Di Noia, Antonio.,...&Ferrare, Richard.(2020).Aerosol retrievals from different polarimeters during the ACEPOL campaign using a common retrieval algorithm.ATMOSPHERIC MEASUREMENT TECHNIQUES,13(2),553-573.
MLA	Fu, Guangliang,et al."Aerosol retrievals from different polarimeters during the ACEPOL campaign using a common retrieval algorithm".ATMOSPHERIC MEASUREMENT TECHNIQUES 13.2(2020):553-573.