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DOI	10.1175/JCLI-D-19-0468.1
	Observed evolution of the tropical atmospheric water cycle with sea surface temperature
	Höjgård-Olsen E.; Brogniez H.; Chepfer H.
发表日期	2020
ISSN	0894-8755
起始页码	3449
结束页码	3470
卷号	33 期号:9
英文摘要	Better understanding of how moisture, clouds, and precipitation covary under climate warming lacks a comprehensive observational view. This paper analyzes the tropical atmospheric water cycle’s evolution with sea surface temperature (SST), using for the first time, the synergistic dataset of instantaneous observations of the relative humidity profile from the Megha-Tropiques satellite, clouds from the CALIPSO satellite, and near-surface precipitation from the CloudSat satellite, and quantifies their rates of change with SST warming. The dataset is partitioned into three vertical velocity regimes, with cloudy grid boxes categorized by phase (ice or liquid), opacity (opaque or thin), and the presence of near-surface precipitation. Opaque cloud cover is always larger in the presence of near-surface precipitation (high ice clouds especially). Low liquid water clouds in the descending regime dominate for SSTs, 299.25 K, where the free troposphere is dry (;20%), and opaque liquid water cloud cover decreases with SST warming (28% K21) and thin liquid water cloud cover stays constant (;20%). High ice clouds dominate the ascending regime in which, for 299.25, SST, 301.75 K, humidity increases with SST in the lower free troposphere and peaks around 302 K. Over the warm SST range (.301.75 K), in the ascending regime, opaque high ice cloud cover decreases with SST (213% K21), while thin ice cloud cover increases (16% K21). Over the warm SST range, total cloudiness decreases with warming in all regimes. This paper characterizes fundamental relationships between aspects of the tropical atmospheric water cycle and SST. © 2020 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy
英文关键词	Atmospheric humidity; Atmospheric temperature; Clouds; Ice; Liquids; Precipitation (meteorology); Satellites; Submarine geophysics; Surface properties; Surface waters; Tropics; Troposphere; Atmospheric water; Climate warming; Free troposphere; Liquid water clouds; Megha-tropiques; Near surface precipitation; Sea surface temperature (SST); Vertical velocity; Oceanography; CALIPSO; cloud cover; CloudSat; global warming; hydrological cycle; precipitation (climatology); relative humidity; sea surface temperature; tropical region
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171331
作者单位	LATMOS/IPSL, Université de Versailles Saint-Quentin-en-Yvelines, CNRS, Guyancourt, France; LMD/IPSL, Sorbonne Université, École Polytechnique, CNRS, France
推荐引用方式 GB/T 7714	Höjgård-Olsen E.,Brogniez H.,Chepfer H.. Observed evolution of the tropical atmospheric water cycle with sea surface temperature[J],2020,33(9).
APA	Höjgård-Olsen E.,Brogniez H.,&Chepfer H..(2020).Observed evolution of the tropical atmospheric water cycle with sea surface temperature.Journal of Climate,33(9).
MLA	Höjgård-Olsen E.,et al."Observed evolution of the tropical atmospheric water cycle with sea surface temperature".Journal of Climate 33.9(2020).