气候变化领域集成服务门户(CCPortal): Variation of Snow Mass in a Regional Climate Model Downscaling Simulation Covering the Tianshan Mountains, Central Asia

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DOI	10.1029/2020JD034183
	Variation of Snow Mass in a Regional Climate Model Downscaling Simulation Covering the Tianshan Mountains, Central Asia
	Yang T.; Li Q.; Chen X.; Hamdi R.; De Maeyer P.; Li L.
发表日期	2021
ISSN	2169897X
卷号	126 期号:10
英文摘要	Mountain snow is a fundamental freshwater supply in the arid regions. Climate warming alters the timing of snowmelt and shortens the snow cover duration, which greatly influences the regional climate and water management. However, a reliable estimation of snow mass in the Tianshan Mountains (TS) is still unclear due to the scarcity of extensive continuous surface observations and a complex spatial heterogeneity. Therefore, a long-time snow simulation from 1982 to 2018 was performed in WRF/Noah-MP to quantify snow mass in the TS, forced by ERA5 reanalysis data and real-time updated leaf area index and green vegetation fraction. Meanwhile, March snow mass (close to the annual peak snow mass), snow cover fraction (SCF), and their associated trends were investigated in the TS. The results indicated a good accuracy of the simulated snow water equivalent (root mean square error [RMSE]: 7.82 mm/day) with a slight overestimation (2.84 mm/day). Compared with ERA5 data set, the RMSE and mean bias of the daily snow depth from WRF/Noah-MP downscaling were significantly reduced by 95.74% and 93.02%, respectively. The climatological March snow mass measured 97.85 (±16.60) Gt in the TS and exhibited a negligible tendency during the study period. The total precipitation during the cold season controlled the variations of March snow mass. The increased precipitation in the high-altitude regions contributed to an extensive snow mass, which could offset the loss in the TS lowland. In contrast, rapidly rising air temperature caused a significant reduction of March SCF, particularly in the Southern TS. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	ERA5; snow depth; snow mass; snow water equivalent; vegetation parameters; WRF/Noah-MP
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185192
作者单位	State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China; Ili Station for Watershed Ecosystem Research, Chinese Academy of Sciences, Xinyuan, China; University of Chinese Academy of Sciences, Beijing, China; Department of Geography, Ghent University, Ghent, Belgium; Sino-Belgian Joint Laboratory of Geo-information, Urumqi, China; Sino-Belgian Joint Laboratory of Geo-information, Ghent, Belgium; CAS Research Centre for Ecology and Environment of Central Asia, Urumqi, China; Meteorological and Climatological Department, Royal Meteorological Institute, Brussels, Belgium; Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China; Department of Physics and Astronomy, Ghent University, Ghent, Belgium; Xinjiang Key Laboratory of Water Cycle and Utilization in Arid Zone, Urumqi, China
推荐引用方式 GB/T 7714	Yang T.,Li Q.,Chen X.,et al. Variation of Snow Mass in a Regional Climate Model Downscaling Simulation Covering the Tianshan Mountains, Central Asia[J],2021,126(10).
APA	Yang T.,Li Q.,Chen X.,Hamdi R.,De Maeyer P.,&Li L..(2021).Variation of Snow Mass in a Regional Climate Model Downscaling Simulation Covering the Tianshan Mountains, Central Asia.Journal of Geophysical Research: Atmospheres,126(10).
MLA	Yang T.,et al."Variation of Snow Mass in a Regional Climate Model Downscaling Simulation Covering the Tianshan Mountains, Central Asia".Journal of Geophysical Research: Atmospheres 126.10(2021).