气候变化领域集成服务门户(CCPortal): Seasonal dependency of tropical precipitation change under global warming

CCPortal

DOI	10.1175/JCLI-D-20-0032.1
	Seasonal dependency of tropical precipitation change under global warming
	Geng Y.-F.; Xie S.-P.; Zheng X.-T.; Wang C.-Y.
发表日期	2020
ISSN	0894-8755
起始页码	7897
结束页码	7908
卷号	33 期号:18
英文摘要	Tropical precipitation change under global warming varies with season. The present study investigates the characteristics and cause of the seasonality in rainfall change. Diagnostically, tropical precipitation change is decomposed into thermodynamic and dynamic components. The thermodynamic component represents the wet-get-wetter effect and its seasonality is due mostly to that in the mean vertical velocity, especially in the monsoon regions. The dynamic component includes the warmer-get-wetter effect due to the spatial variations in sea surface temperature (SST) warming, while the seasonality is due to that of the climatological SST and can be largely reproduced by an atmospheric model forced with the monthly climatological SST plus the annual-mean SST warming pattern. In the eastern equatorial Pacific where the SST warming is locally enhanced; for example, rainfall increases only during the March–May season when the climatological SST is high enough for deep convection. To the extent that the seasonality of tropical precipitation change over oceans arises mostly from that of the climatological SST, the results support the notion that reducing model biases in climatology improves regional rainfall projections. © 2020 American Meteorological Society.
英文关键词	Global warming; Rain; Surface waters; Tropics; Atmospheric model; Dynamic component; Eastern equatorial Pacific; Mean vertical velocity; Sea surface temperature (SST); Spatial variations; Tropical precipitation; Warming patterns; Oceanography; atmospheric forcing; atmospheric modeling; global warming; precipitation (climatology); rainfall; sea surface temperature; seasonality; spatial variation; thermodynamics; tropical environment; Pacific Ocean; Pacific Ocean (Equatorial)
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/171124
作者单位	Physical Oceanography Laboratory, Institute for Advanced Ocean Studies, Ocean University of China, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Scripps Institution of Oceanography, University of California, San Diego, San diego, CA, United States
推荐引用方式 GB/T 7714	Geng Y.-F.,Xie S.-P.,Zheng X.-T.,et al. Seasonal dependency of tropical precipitation change under global warming[J],2020,33(18).
APA	Geng Y.-F.,Xie S.-P.,Zheng X.-T.,&Wang C.-Y..(2020).Seasonal dependency of tropical precipitation change under global warming.Journal of Climate,33(18).
MLA	Geng Y.-F.,et al."Seasonal dependency of tropical precipitation change under global warming".Journal of Climate 33.18(2020).