气候变化领域集成服务门户(CCPortal): Modeling study of the impact of complex terrain on the surface energy and hydrology over the Tibetan Plateau

CCPortal

DOI	10.1007/s00382-019-04966-z
	Modeling study of the impact of complex terrain on the surface energy and hydrology over the Tibetan Plateau
	Fan X.; Gu Y.; Liou K.-N.; Lee W.-L.; Zhao B.; Chen H.; Lu D.
发表日期	2019
ISSN	0930-7575
起始页码	6919
结束页码	6932
卷号	53 期号:11
英文摘要	The long-term effects of complex terrain on solar energy distributions and surface hydrology over the Tibetan Plateau (TP) are investigated using the 4th version of the global Community Climate System Model (CCSM4) coupled with a 3-D radiative transfer (RT) parameterization. We examine the differences between the results from CCSM4 with the 3-D RT parameterization and the results from CCSM4 with the plane-parallel RT scheme. In January (winter), the net surface solar flux (FSNS) displays negative deviations over valleys and the north slopes of mountains, especially in the northern margin of the TP, as a result of the 3-D shadow effect. Positive deviations in FSNS in January are found over the south slopes of mountains and over mountain tops, where more solar flux is intercepted. The deviations in total cloud fraction and snow water equivalent (SWE) exhibit patterns opposite to that of FSNS. The SWE decreases due to the 3-D mountain effect in spring and the magnitude of this effect depends on the terrain elevations. The SWE is reduced by 1–17 mm over the TP in April, with the largest decrease in SWE at an elevation of 3.5–4.5 km. Negative deviations in precipitation are found throughout the year, except in May and December, and they follow the seasonal variations in the deviations in total cloud fraction. The total liquid runoff at 3.5–4.5 km elevation increases in April due to earlier (March) snowmelt caused by increased downward solar radiation. The possible deviations in surface energy and SWE over the TP, caused by plane-parallel assumption in most climate models may result in biases in the liquid runoff and the river water resources over the TP and downstream. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
语种	英语
scopus关键词	complex terrain; hydrology; modeling; radiative transfer; snow water equivalent; solar radiation; surface energy; 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/145811
作者单位	Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Joint Institute for Regional Earth System Science and Engineering and Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA, United States; Research Center for Environmental Changes, Academia Sinica, Taipei, Taiwan
推荐引用方式 GB/T 7714	Fan X.,Gu Y.,Liou K.-N.,et al. Modeling study of the impact of complex terrain on the surface energy and hydrology over the Tibetan Plateau[J],2019,53(11).
APA	Fan X..,Gu Y..,Liou K.-N..,Lee W.-L..,Zhao B..,...&Lu D..(2019).Modeling study of the impact of complex terrain on the surface energy and hydrology over the Tibetan Plateau.Climate Dynamics,53(11).
MLA	Fan X.,et al."Modeling study of the impact of complex terrain on the surface energy and hydrology over the Tibetan Plateau".Climate Dynamics 53.11(2019).