气候变化领域集成服务门户(CCPortal): Monsoon-Induced Zonal Asymmetries in Moisture Transport Cause Anomalous Pacific Precipitation Minus Evaporation

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DOI	10.1029/2020GL088659
	Monsoon-Induced Zonal Asymmetries in Moisture Transport Cause Anomalous Pacific Precipitation Minus Evaporation
	Craig P.M.; Ferreira D.; Methven J.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:18
英文摘要	Basin-integrated precipitation minus evaporation (P − E) in the Pacific is near neutral while the Atlantic shows net evaporation. We link this P − E asymmetry to atmospheric moisture fluxes across the boundaries of the ocean drainage basins. Adopting an objective approach based on a comparison between actual fluxes and a zonally averaged circulation, we show that the asymmetry is dominated by moisture fluxes associated with the monthly mean flow at low latitudes rather than by differences in moisture fluxes into the Southern Ocean and Arctic catchments. In boreal summer, the eastward moisture flux, due to the Asian Summer Monsoon flow, opposes the zonal mean westward flux in the Trade Winds and results in more positive P − E over the Pacific than both the Atlantic and Indian Oceans, even in the annual mean. Our analysis reveals that moisture flux across Southeast Asia, rather than across Central America, is the dominant factor in the P − E asymmetry. ©2020. The Authors.
英文关键词	Atmospheric thermodynamics; Catchments; Evaporation; Asian summer monsoons; Atmospheric moisture; Central America; Dominant factor; Moisture fluxes; Moisture transport; Objective approaches; Zonal asymmetry; Moisture; air-sea interaction; atmospheric moisture; catchment; drainage basin; evaporation; moisture flux; monsoon; precipitation assessment; Arctic; Pacific Ocean; Southeast Asia; Southern Ocean
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/169715
作者单位	National Centre for Atmospheric Science, Department of Meteorology, University of Reading, Reading, United Kingdom; Department of Meteorology, University of Reading, Reading, United Kingdom
推荐引用方式 GB/T 7714	Craig P.M.,Ferreira D.,Methven J.. Monsoon-Induced Zonal Asymmetries in Moisture Transport Cause Anomalous Pacific Precipitation Minus Evaporation[J],2020,47(18).
APA	Craig P.M.,Ferreira D.,&Methven J..(2020).Monsoon-Induced Zonal Asymmetries in Moisture Transport Cause Anomalous Pacific Precipitation Minus Evaporation.Geophysical Research Letters,47(18).
MLA	Craig P.M.,et al."Monsoon-Induced Zonal Asymmetries in Moisture Transport Cause Anomalous Pacific Precipitation Minus Evaporation".Geophysical Research Letters 47.18(2020).