Spring snow depth changes and feedback to surface air temperature across the Tibetan plateau from 1961 to 2013

doi:10.1002/joc.7230

	Spring snow depth changes and feedback to surface air temperature across the Tibetan plateau from 1961 to 2013
	Chen, Xiaona 1,2; Yang, Yaping 1,2
刊名	INTERNATIONAL JOURNAL OF CLIMATOLOGY
	2021-06-14
页码	16
关键词	climate change spring snow depth temperature Tibetan plateau
ISSN号	0899-8418
DOI	10.1002/joc.7230
通讯作者	Chen, Xiaona(chenxn@igsnrr.ac.cn)
英文摘要	Spring snow depth (SSD) in the Tibetan Plateau (TP) plays an essential role in snow water estimation, vegetation growth, and climate projections for Southwest China and the surrounding Asian countries. Previous studies have reported a decline in SSD that is associated with increasing surface air temperature (T-s) across the TP over the past decades. However, only a few studies have explored the potential feedback of SSD to T-s, which has hindered the elucidation of the vulnerability of snow cover in the TP against the backdrop of rapid climate change. Based on data from 69 meteorological stations in the central and eastern parts of the TP, this study analyses changes in SSD and its feedback to T-s from 1961 to 2013. Overall, a slightly negative trend in SSD was observed from 1961 to 2013, during which two contrasting trends were detected using a piecewise regression approach: an initial increase from 1961 to 1981 (0.12 cm decades(-1), p < .01) followed by a decrease from 1982 to 2013 (-0.36 cm decades(-1), p < .01). Sensitivity analysis revealed that the SSD decline was systematically correlated with a positive T-s anomaly, with sensitivities of -0.050 cm degrees C-1 (p < .01) and -0.069 cm degrees C-1 (p < .01) for 1961-2013 and 1982-2013, respectively. However, following the accelerated SSD decline during 1982-2013, its potential feedback to T-s was attenuated, with averaged feedback values from -1.328 degrees C cm(-1) during 1961-2013 to -0.936 degrees C cm(-1) during 1982-2013 in latitudes below 3,500 m, distributed in the Qaidam and Yellow River basins, and the upper reaches of the Yangtze River basin. The decrease in feedback from SSD to T-s may lead to changes in the mechanism controlling T-s dynamics across the TP, which should be considered in climate change projections in future studies.
资助项目	National Natural Science Foundation of China[42001377] ; 13th Five-year Informatization Plan of Chinese Academy of Sciences, Construction of Scientific Data Center System[XXH13514] ; National Earth System Science Data Sharing Infrastructure of China[2005DKA32300]
WOS关键词	NORTHERN-HEMISPHERE ; ALBEDO FEEDBACK ; COVER EXTENT ; PHENOLOGY ; VARIABILITY ; CIRCULATION ; SENSITIVITY ; ECOSYSTEMS ; IMPACTS ; CHINA
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	WILEY
WOS记录号	WOS:000661243900001
资助机构	National Natural Science Foundation of China ; 13th Five-year Informatization Plan of Chinese Academy of Sciences, Construction of Scientific Data Center System ; National Earth System Science Data Sharing Infrastructure of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/164110]
专题	中国科学院地理科学与资源研究所
通讯作者	Chen, Xiaona
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China 2.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing, Peoples R China
推荐引用方式 GB/T 7714	Chen, Xiaona,Yang, Yaping. Spring snow depth changes and feedback to surface air temperature across the Tibetan plateau from 1961 to 2013[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2021:16.
APA	Chen, Xiaona,&Yang, Yaping.(2021).Spring snow depth changes and feedback to surface air temperature across the Tibetan plateau from 1961 to 2013.INTERNATIONAL JOURNAL OF CLIMATOLOGY,16.
MLA	Chen, Xiaona,et al."Spring snow depth changes and feedback to surface air temperature across the Tibetan plateau from 1961 to 2013".INTERNATIONAL JOURNAL OF CLIMATOLOGY (2021):16.