气候变化领域集成服务门户(CCPortal): Southern Ocean Cloud Properties Derived From CAPRICORN and MARCUS Data

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DOI	10.1029/2020JD033368
	Southern Ocean Cloud Properties Derived From CAPRICORN and MARCUS Data
	Mace G.G.; Protat A.; Humphries R.S.; Alexander S.P.; McRobert I.M.; Ward J.; Selleck P.; Keywood M.; McFarquhar G.M.
发表日期	2021
ISSN	2169897X
卷号	126 期号:4
英文摘要	The properties of Southern Ocean (SO) liquid phase non precipitating clouds (hereafter clouds) are examined using shipborne data collected during the Measurements of Aerosols, Radiation and Clouds over the Southern Ocean and the Clouds Aerosols Precipitation Radiation and atmospheric Composition Over the SoutheRN ocean I and II campaigns that took place south of Australia during Autumn 2016 and Summer 2017–2018. Cloud properties are derived using data from W-band radars, lidars, and microwave radiometers using an optimal estimation algorithm. The SO clouds tended to have larger liquid water paths (LWP, 115 ± 117 g m−2), smaller effective radii (re, 8.7 ± 3 μm), and higher number concentrations (Nd, 90 ± 107 cm−3) than typical values of eastern ocean basin stratocumulus. The clouds demonstrated a tendency for the LWP to increase with Nd presumably due to precipitation suppression up to Nd of approximately 100 cm−3 when mean LWP decreased with increasing Nd. Due to higher optical depth, cloud albedos were less susceptible to changes in Nd compared to subtropical stratocumulus. The highest latitude clouds of the datasets, observed along and near the Antarctic coast, presented a distinctly bimodal character. One mode had the properties of marine clouds further north. The other mode occurred in an aerosol environment characterized by high cloud condensation nuclei concentrations and elevated sulfate aerosol without obvious continental aerosol markers. These regions of higher cloud condensation nuclei tended to have higher Nd, smaller re and higher LWP suggesting sensitivity of cloud properties to seasonal biogenic aerosol production in the high latitude SO. © 2020. The Authors.
英文关键词	cloud aerosol interaction; cloud droplet number concentration; cloud remote sensing; remote sensing; Southern Ocean; Southern Ocean clouds
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/185459
作者单位	Department of Atmospheric Sciences, University of Utah, Salt Lake City, UT, United States; Australian Bureau of Meteorology, Melbourne, VIC, Australia; Australian Antarctic Partnership Program, Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia; Climate Science Centre, CSIRO Oceans and Atmosphere, Aspendale, VIC, Australia; Australian Antarctic Division, Kingston, TAS, Australia; Engineering and Technology Program, CSIRO Oceans and Atmosphere, Hobart, TAS, Australia; Climate Science Center/Atmospheric Composition and Chemistry/Aerosols, Oceans and Atmosphere, CSIRO, Aspendale, VIC, Australia; Cooperative Institute for Mesoscale Meteorological Studies (CIMMS) and School of Meteorology, University of Oklahoma, Norman, OK, United States
推荐引用方式 GB/T 7714	Mace G.G.,Protat A.,Humphries R.S.,et al. Southern Ocean Cloud Properties Derived From CAPRICORN and MARCUS Data[J],2021,126(4).
APA	Mace G.G..,Protat A..,Humphries R.S..,Alexander S.P..,McRobert I.M..,...&McFarquhar G.M..(2021).Southern Ocean Cloud Properties Derived From CAPRICORN and MARCUS Data.Journal of Geophysical Research: Atmospheres,126(4).
MLA	Mace G.G.,et al."Southern Ocean Cloud Properties Derived From CAPRICORN and MARCUS Data".Journal of Geophysical Research: Atmospheres 126.4(2021).