气候变化领域集成服务门户(CCPortal): Comparison of Coincident Optical Particle Counter and Lidar Measurements of Polar Stratospheric Clouds Above McMurdo (77.85°S, 166.67°E) From 1994 to 1999

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DOI	10.1029/2020JD033572
	Comparison of Coincident Optical Particle Counter and Lidar Measurements of Polar Stratospheric Clouds Above McMurdo (77.85°S, 166.67°E) From 1994 to 1999
	Snels M.; Cairo F.; Di Liberto L.; Scoccione A.; Bracaglia M.; Deshler T.
发表日期	2021
ISSN	2169897X
卷号	126 期号:6
英文摘要	Macroscopic stratospheric aerosol properties such as surface area density (SAD) and volume density (VD) are required by modern chemistry climate models. These quantities are in continuous need of validation by observations. Direct observation of these parameters is not possible, but they can be derived from optical particle counters (OPCs) which provide concentration (number density) and size distributions of aerosol particles, and possibly from ground-based and satellite-borne lidar observations of particle backscatter coefficients and aerosol type. When such measurements are obtained simultaneously by OPCs and lidars, they can be used to calculate backscatter and extinction coefficients, as well as SAD and VD. Empirical relations can thus be derived between particle backscatter coefficient, extinction coefficient, and SAD and VD for a variety of aerosols (desert dust, maritime aerosols, stratospheric aerosols) and be used to approximate SAD and VD from lidar measurements. Here we apply this scheme to coincident measurements of polar stratospheric clouds above McMurdo Station, Antarctica, by ground-based lidar and balloon-borne OPCs. The relationships derived from these measurements will provide a means to obtain values of SAD and VD for supercooled ternary solutions (STS) and nitric acid trihydrate (NAT) PSCs from the backscatter coefficients measured by lidar. Coincident lidar and OPC measurements provided 15 profile comparisons. Empirical expressions of SAD and VD as a function of particle backscatter coefficient, β, were calculated from fits of the form log(SAD/VD) = A + B log(β) using β from the lidar and SAD/VD from the OPC. The PSCs were classified as STS and NAT mixtures, ice being absent. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	lidar; OPC; PSC
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185410
作者单位	National Research Council of Italy, Institute of Atmospheric Sciences and Climate (CNR-ISAC), Rome, Italy; University of Wyoming, Laramie, WY, United States
推荐引用方式 GB/T 7714	Snels M.,Cairo F.,Di Liberto L.,et al. Comparison of Coincident Optical Particle Counter and Lidar Measurements of Polar Stratospheric Clouds Above McMurdo (77.85°S, 166.67°E) From 1994 to 1999[J],2021,126(6).
APA	Snels M.,Cairo F.,Di Liberto L.,Scoccione A.,Bracaglia M.,&Deshler T..(2021).Comparison of Coincident Optical Particle Counter and Lidar Measurements of Polar Stratospheric Clouds Above McMurdo (77.85°S, 166.67°E) From 1994 to 1999.Journal of Geophysical Research: Atmospheres,126(6).
MLA	Snels M.,et al."Comparison of Coincident Optical Particle Counter and Lidar Measurements of Polar Stratospheric Clouds Above McMurdo (77.85°S, 166.67°E) From 1994 to 1999".Journal of Geophysical Research: Atmospheres 126.6(2021).