干旱区生态环境知识资源中心(Arid): Spatiotemporal Variation of Snow Cover and Its Response to Climate Change in the Source Region of the Yangtze River, China

Arid

DOI	10.3390/atmos13081161
	Spatiotemporal Variation of Snow Cover and Its Response to Climate Change in the Source Region of the Yangtze River, China
	Shi, Mengqi; Yuan, Zhe; Hong, Xiaofeng; Liu, Simin
通讯作者	Yuan, Z ; Hong, XF
来源期刊	ATMOSPHERE
EISSN	2073-4433
出版年	2022
卷号	13 期号:8
英文摘要	In the context of global warming, snow cover changes have an extremely important impact on the hydrological cycle and the redistribution of water resources in arid and semi-arid regions. In this paper, based on the daily cloud-free snow area remote sensing product data in the source region of Yangtze River (SRYR) from 2000 to 2019, the snow phenology variables such as the snow cover day (SCD), snow onset date (SOD), snow end date (SED), and snow duration day (SDD) were extracted separately for each hydrological year, and the vertical distribution of snow cover area (SCA) in the SRYR was analyzed by combining with the digital elevation model (DEM). In addition, we also combined climate factors and land cover types to further explore the spatiotemporal variation characteristics of snow phenology in response to different influencing factors, in order to reveal the spatiotemporal variation patterns of snow cover in the SRYR. The results showed that: (1) The SCA in the SRYR has a more obvious vertical distribution, with the maximum SCA reaching 61.58% at high elevation, while at low elevation, the SCA is mostly below 20%. The distribution of SCD in the study area showed a significant exponential correlation with DEM (R-2 = 0.87). (2) The area of SOD in the SRYR showed an advanced trend of about 63.37%, while the area of SED showed a delayed trend of about 69.59%, and the area which showed significant trends is 4.29% and 4.36%, respectively. Therefore, the trends of both SOD and SED showed insignificant changes. (3) Temperature change is the main factor affecting the change of snow cover in the SRYR. Among them, 90.9% of the regions showed a significant positive correlation between temperature and SCD, while precipitation showed a significant negative correlation with SCD in about 75.3% of the total area of SRYR. Under the stable snow area (SCD > 60), the land cover type is glacial or permanent snow about 1.5 x 10(3) km(2), which covers almost the entire glacial or permanent snow of the SRYR.
英文关键词	snow cover area snow phenology spatiotemporal variation climate change source region of Yangtze River
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000846372100001
WOS关键词	SPATIAL-TEMPORAL VARIABILITY ; ACCURACY ASSESSMENT ; TIANSHAN MOUNTAINS ; TEMPERATURE ; PRODUCTS ; PRECIPITATION ; BASIN
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/391922
推荐引用方式 GB/T 7714	Shi, Mengqi,Yuan, Zhe,Hong, Xiaofeng,et al. Spatiotemporal Variation of Snow Cover and Its Response to Climate Change in the Source Region of the Yangtze River, China[J],2022,13(8).
APA	Shi, Mengqi,Yuan, Zhe,Hong, Xiaofeng,&Liu, Simin.(2022).Spatiotemporal Variation of Snow Cover and Its Response to Climate Change in the Source Region of the Yangtze River, China.ATMOSPHERE,13(8).
MLA	Shi, Mengqi,et al."Spatiotemporal Variation of Snow Cover and Its Response to Climate Change in the Source Region of the Yangtze River, China".ATMOSPHERE 13.8(2022).