气候变化领域集成服务门户(CCPortal): Changes in China's Snow Droughts Characteristics From 1993 to 2019

CCPortal

DOI	10.1029/2023JD039297
	Changes in China's Snow Droughts Characteristics From 1993 to 2019
	Guan, Yanlong; Liu, Junguo; Li, Delong; Dou, Yuehan; Chen, Penghan; Zhang, Chongyang; Jiang, Yelin; Chen, He; Chen, Aifang; Maeda, Eduardo Eiji
发表日期	2024
ISSN	2169-897X
EISSN	2169-8996
起始页码	129
结束页码	2
卷号	129 期号:2
英文摘要	Snowpacks are natural water reservoirs providing a considerable amount of water for humans and ecosystems. However, current global snow products (e.g., ESA GlobSnow v3.0), lack high spatial resolution and regional calibrations necessary to capture the high heterogeneity of snow water equivalents (SWEs) in complex Asian mountainous terrains. Therefore, our understanding of snow drought characteristics in China remains limited. Herein, we used an improved SWE product calibrated specifically for China to explore the characteristics of snow droughts, delineated by a standardized SWE index (SWEI) between 1993 and 2019. Our analysis was focused over three main snow-covered regions of China: Qinghai-Tibet Plateau (QTP), northern Xinjiang, Northeast China. Especially during the period from 1993 to 2010, we found that the SWEI increased significantly at rates of 0.022/yr (Northeast China), 0.017/yr (northern Xinjiang), and 0.011/yr (QTP) (p < 0.01, Mann-Kendall trend test). Increased SWEI contributed to decreasing snow drought events across China, with an obvious short-term characteristic, whilst area proportion of the identified 1-month snow droughts was above 46.5% across three regions. Furthermore, we found that the occurrence of snow droughts was likely mediated by large-scale atmospheric circulation, since increased water vapor transport caused a significant vapor flux convergence in cold seasons over three regions, especially in northern Xinjiang and Northeast China.
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:001148830200001
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/295150
作者单位	Fujian Agriculture & Forestry University; Southern University of Science & Technology; North China University of Water Resources & Electric Power; North China University of Water Resources & Electric Power; Chinese Academy of Sciences; Institute of Geographic Sciences & Natural Resources Research, CAS; Xi'an Jiaotong-Liverpool University; Lanzhou University; Columbia University; University of Helsinki; Finnish Meteorological Institute
推荐引用方式 GB/T 7714	Guan, Yanlong,Liu, Junguo,Li, Delong,et al. Changes in China's Snow Droughts Characteristics From 1993 to 2019[J],2024,129(2).
APA	Guan, Yanlong.,Liu, Junguo.,Li, Delong.,Dou, Yuehan.,Chen, Penghan.,...&Maeda, Eduardo Eiji.(2024).Changes in China's Snow Droughts Characteristics From 1993 to 2019.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,129(2).
MLA	Guan, Yanlong,et al."Changes in China's Snow Droughts Characteristics From 1993 to 2019".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 129.2(2024).