气候变化领域集成服务门户(CCPortal): Changes in Tropical Precipitation Intensity With El Niño Warming

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DOI	10.1029/2020GL087663
	Changes in Tropical Precipitation Intensity With El Niño Warming
	Sullivan S.C.; Schiro K.A.; Yin J.; Gentine P.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:14
英文摘要	Mesoscale convection generates the majority of extreme precipitation in tropical regions. Changes to these precipitation intensities, P, with long-term modes of climate variability have been hard to assess because they are not well represented in current climate models. Here we stratify a satellite climatology of convective systems by El Niño phase and cloud top temperature. We find that gains (losses) in high precipitation intensity ((Formula presented.) 10 mm hr−1) are largest for the deepest (least deep) systems during El Niño relative to La Niña. The surface temperature and wind changes that define El Niño manifest as surface flux changes but are not sufficient to explain these (Formula presented.) trends. We explore also the dynamical component of precipitation generation with a vertical momentum budget. Midtropospheric drying in the vicinity of the deepest systems boosts instability and ascent rates during El Niño, while the strengthened large-scale ascent minimizes the drag force on their updrafts. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Budget control; Climatology; Drag; Precipitation (meteorology); Tropics; Climate variability; Cloud-top temperatures; Convective systems; Dynamical components; Extreme precipitation; Precipitation intensity; Surface temperatures; Tropical precipitation; Climate models; climate modeling; climate variation; climatology; El Nino; La Nina; mesoscale eddy; precipitation (climatology); precipitation intensity; tropical region
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170074
作者单位	Department of Earth and Environmental Engineering, Columbia University, New York, NY, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, China
推荐引用方式 GB/T 7714	Sullivan S.C.,Schiro K.A.,Yin J.,et al. Changes in Tropical Precipitation Intensity With El Niño Warming[J],2020,47(14).
APA	Sullivan S.C.,Schiro K.A.,Yin J.,&Gentine P..(2020).Changes in Tropical Precipitation Intensity With El Niño Warming.Geophysical Research Letters,47(14).
MLA	Sullivan S.C.,et al."Changes in Tropical Precipitation Intensity With El Niño Warming".Geophysical Research Letters 47.14(2020).