气候变化领域集成服务门户(CCPortal): Phase Characterization of Cold Sector Southern Ocean Cloud Tops: Results From SOCRATES

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DOI	10.1029/2020JD033673
	Phase Characterization of Cold Sector Southern Ocean Cloud Tops: Results From SOCRATES
	Zaremba T.J.; Rauber R.M.; McFarquhar G.M.; Hayman M.; Finlon J.A.; Stechman D.M.
发表日期	2020
ISSN	2169897X
卷号	125 期号:24
英文摘要	For a given cloud, whether the cloud top is predominately made up of ice crystals or supercooled liquid droplets plays a large role in the clouds overall radiative effects. This study uses collocated airborne radar, lidar, and thermodynamic data from 12 high-altitude flight legs during the Southern Ocean Clouds, Radiation, Aerosol Transport Experimental Study (SOCRATES) to characterize Southern Ocean (SO) cold sector cloud top phase (i.e., within 96 m of top) as a function of cloud top temperature (CTT). A training data set was developed to create probabilistic phase classifications based on High Spectral Resolution Lidar data and Cloud Radar data. These classifications were then used to identify dominant cloud top phase. Case studies are presented illustrating examples of supercooled liquid water at cloud top at different CTT ranges over the SO (−3°C < CTTs < −28°C). During SOCRATES, 67.4% of sampled cloud top had CTTs less than 0°C. Of the subfreezing cloud tops sampled, 91.7% had supercooled liquid water present in the top 96 m and 74.9% were classified entirely as liquid-bearing. Liquid-bearing cloud tops were found at CTTs as cold as −30°C. Horizontal cloud extent was also determined as a function of median cloud top height. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	cloud top phase; HCR; HSRL; phase identification; SOCRATES; Southern Ocean
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/185584
作者单位	Department of Atmospheric Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States; Cooperative Institute for Mesoscale Meteorological Studies, University of Oklahoma, Norman, OK, United States; School of Meteorology, University of Oklahoma, Norman, OK, United States; National Center for Atmospheric Research, Boulder, CO, United States; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; NOAA/OAR National Severe Storms Laboratory, Norman, OK, United States
推荐引用方式 GB/T 7714	Zaremba T.J.,Rauber R.M.,McFarquhar G.M.,et al. Phase Characterization of Cold Sector Southern Ocean Cloud Tops: Results From SOCRATES[J],2020,125(24).
APA	Zaremba T.J.,Rauber R.M.,McFarquhar G.M.,Hayman M.,Finlon J.A.,&Stechman D.M..(2020).Phase Characterization of Cold Sector Southern Ocean Cloud Tops: Results From SOCRATES.Journal of Geophysical Research: Atmospheres,125(24).
MLA	Zaremba T.J.,et al."Phase Characterization of Cold Sector Southern Ocean Cloud Tops: Results From SOCRATES".Journal of Geophysical Research: Atmospheres 125.24(2020).