气候变化领域集成服务门户(CCPortal): Understanding precipitation recycling over the Tibetan Plateau using tracer analysis with WRF

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DOI	10.1007/s00382-020-05426-9
	Understanding precipitation recycling over the Tibetan Plateau using tracer analysis with WRF
	Gao Y.; Chen F.; Miguez-Macho G.; Li X.
发表日期	2020
ISSN	0930-7575
起始页码	2921
结束页码	2937
卷号	55
英文摘要	The precipitation recycling (PR) ratio is an important indicator that quantifies the land-atmosphere interaction strength in the Earth system’s water cycle. To better understand how the heterogeneous land surface in the Tibetan Plateau (TP) contributes to precipitation, we used the water-vapor tracer (WVT) method coupled with the Weather Research and Forecasting (WRF) regional climate model. The goals were to quantify the PR ratio, in terms of annual mean, seasonal variability and diurnal cycle, and to address the relationships of the PR ratio with lake treatments and precipitation amount. Simulations showed that the PR ratio increases from 0.1 in winter to 0.4 in summer when averaged over the TP with the maxima centered at the headwaters of three major rivers (Yangtze, Yellow and Mekong). For the central TP, the highest PR ratio rose to over 0.8 in August, indicating that most of the precipitation was recycled via local evapotranspiration in summer. The larger daily mean and standard deviation of the PR ratio in summer suggested a stronger effect of land-atmosphere interactions on precipitation in summer than in winter. Despite the relatively small spatial extent of inland lakes, the treatment of lakes in WRF significantly impacted the calculation of the PR ratio over the TP, and correcting lake temperature substantially improved both precipitation and PR ratio simulations. There was no clear relationship between PR ratio and precipitation amount; however, a significant positive correlation between PR and convective precipitation was revealed. This study is beneficial for the understanding of land-atmosphere interaction over high mountain regions. © 2020, The Author(s).
英文关键词	lakes; Precipitation; precipitation recycling; Tibetan Plateau; WRF-WVT
语种	英语
scopus关键词	climate modeling; lake; land-atmosphere interaction; precipitation (climatology); temporal variation; tracer; water vapor; China; Qinghai-Xizang Plateau
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145273
作者单位	Department of Atmospheric and Oceanic Sciences, Institute of Atmospheric Sciences, Fudan University, No. 2005 Songhu Road, Yangpu District, Shanghai, 200438, China; National Center for Atmospheric Research, Boulder, CO 80301, United States; Non-Linear Physics Group, Universidade de Santiago de Compostela, Santiago de Compostela, Galicia 15705, Spain; Key Laboratory of Land-surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco- environment and Resources, Chinese Academy of Sciences, Lanzhou, China
推荐引用方式 GB/T 7714	Gao Y.,Chen F.,Miguez-Macho G.,et al. Understanding precipitation recycling over the Tibetan Plateau using tracer analysis with WRF[J],2020,55.
APA	Gao Y.,Chen F.,Miguez-Macho G.,&Li X..(2020).Understanding precipitation recycling over the Tibetan Plateau using tracer analysis with WRF.Climate Dynamics,55.
MLA	Gao Y.,et al."Understanding precipitation recycling over the Tibetan Plateau using tracer analysis with WRF".Climate Dynamics 55(2020).