气候变化领域集成服务门户(CCPortal): Projected Changes in Precipitation Recycling over the Tibetan Plateau Based on a Global and Regional Climate Model

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DOI	10.1175/JHM-D-21-0011.1
	Projected Changes in Precipitation Recycling over the Tibetan Plateau Based on a Global and Regional Climate Model
	Zhang, Hongwen; Gao, Yanhong
通讯作者	Gao, YH (通讯作者)，Fudan Univ, Inst Atmospher Sci, Dept Atmospher & Ocean Sci, Shanghai 200438, Peoples R China.
发表日期	2021
ISSN	1525-755X
EISSN	1525-7541
起始页码	2633
结束页码	2644
卷号	22 期号:10
英文摘要	Precipitation recycling, as represented by the precipitation contributed by locally evaporated water vapor, is a key indicator of regional changes in the water cycle. The quasi-isentropic back-trajectory method, combined with a global climate model [Community Climate System Model (CCSM)] and regional climate model [Weather Research and Forecasting (WRF) Model simulation forced by CCSM (WRF-CCSM)], was used to analyze historical (1982-2005) and future (2090-99) precipitation recycling over the Tibetan Plateau (TP). The study focuses on the differences in the projection of precipitation recycling ratio (PRR) changes and relevant mechanisms between the fine-resolution (30 km) WRF-CCSM and coarse-resolution (similar to 110 km) CCSM simulations. Compared with CCSM, the biases and root-mean-square errors of the historical evapotranspiration and precipitation over the TP were greatly reduced in the WRF-CCSM simulation, particularly in precipitation. UsingWRF-CCSMoutputs, higher PRRs in all elevation bands than CCSM, as well as the opposite seasonal pattern and linear trend of PRR for the river basins in the northern TP, were revealed. Unlike the CCSM projections, WRF-CCSM projects increasing trends of PRR changes with elevation under the RCP4.5 and RCP8.5 scenarios, with the largest increase at an elevation of about 5000 m. WRF-CCSM projects a diverse spatial and seasonal pattern of PRR changes, in contrast to the uniform decrease projected by CCSM. The larger fractional increases of future evapotranspiration contribution (precipitation contributed by local evapotranspiration) per unit warming than precipitation changes in WRF-CCSM suggests an enhanced contribution of locally evaporated moisture to total precipitation in the future under the RCP4.5 and RCP8.5 scenarios.
关键词	ATMOSPHERIC MOISTURE PART II WATER TRANSPORT CYCLE WRF EVAPORATION AFRICAN IMPACT
英文关键词	Complex terrain; Climate prediction; Regional models
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000757151800009
来源期刊	JOURNAL OF HYDROMETEOROLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254930
作者单位	[Zhang, Hongwen] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730000, Peoples R China; [Gao, Yanhong] Fudan Univ, Inst Atmospher Sci, Dept Atmospher & Ocean Sci, Shanghai 200438, Peoples R China; [Zhang, Hongwen] China Meteorol Adm, Beijing Meteorol Disaster Prevent Ctr, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Hongwen,Gao, Yanhong. Projected Changes in Precipitation Recycling over the Tibetan Plateau Based on a Global and Regional Climate Model[J]. 中国科学院西北生态环境资源研究院,2021,22(10).
APA	Zhang, Hongwen,&Gao, Yanhong.(2021).Projected Changes in Precipitation Recycling over the Tibetan Plateau Based on a Global and Regional Climate Model.JOURNAL OF HYDROMETEOROLOGY,22(10).
MLA	Zhang, Hongwen,et al."Projected Changes in Precipitation Recycling over the Tibetan Plateau Based on a Global and Regional Climate Model".JOURNAL OF HYDROMETEOROLOGY 22.10(2021).