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Ground observed climatology and trend in snow cover phenology across China with consideration of snow-free breaks

文献类型：期刊论文

作者Ma, Ning2,3; Yu, Kunlun3; Zhang, Yinsheng3,4; Zhai, Jianqing1; Zhang, Yongqiang2; Zhang, Hongbo5
刊名CLIMATE DYNAMICS
出版日期2020-08-28
页码21
ISSN号0930-7575
关键词Snow cover phenology Snow-free breaks The number of snow cover days Snow depth Station measurements Altitudinal dependence
DOI10.1007/s00382-020-05422-z
通讯作者Ma, Ning(ningma@igsnrr.ac.cn)
英文摘要Accurate understanding of snow cover phenology and its changes is important to hydrological processes and climate system. Having recognized the potential uncertainties in remote sensing snow cover products, we used daily snow depth observations from 514 meteorological stations across China to investigate the spatiotemporal variations in snow cover phenology during 1970-2014. Climatologically, the snow cover onset date (D-o) and end date (D-e) as well as the number of snow cover days (D-s) depended on latitude at most stations outside of the Tibetan Plateau (TP). For the high-elevation stations, which were mainly in the TP, multiple snow-free breaks (SFBs) during the cold season made D-s insensitive to D-o and D-e. Furthermore, the number of SFBs (D-b) increased significantly with the rise in elevation, explaining why higher altitudes in TP did not necessarily have greater D-s values despite the earlier D-o and later D-e values. From 1970 to 2014, most stations in China exhibited delayed D-o and advanced D-e due mainly to the increased temperature, but such trends were significant at only 10.5% and 15.4% of the stations, respectively. During the same period, shortened D-s primarily occurred south of similar to 40 degrees N, whereas the opposite ones dominated north of similar to 40 degrees N. Most stations (except those in Hexi Corridor) with significant growth in D-s were characterized by delayed D-o and advanced D-e. Such a phenomenon of "increased snow cover days during shortened cold season" was due to the significant shrinkage in D-b values. The spatial pattern of the trends in annual total snow depth overall follows that of D-s, suggesting that the D-s, when takes SFBs into consideration, could be an indicator of variations of snow water resources in China. The trends in D-o, D-e and D-s were not elevation dependent in TP.
WOS关键词TIBETAN PLATEAU ; SPATIOTEMPORAL VARIABILITY ; ALTITUDINAL DEPENDENCE ; WATER AVAILABILITY ; IN-SITU ; WESTERN ; VEGETATION ; PRODUCTS ; DEPTH ; COMBINATION
资助项目National Key Research and Development Program of China[2017YFA0603101] ; Strategic Priority Research Program (A) of CAS[XDA20060201] ; National Natural Science Foundation of China[41801047] ; National Natural Science Foundation of China[41661144025] ; CAS International Cooperation Program[131C11KYSB20160061] ; Research Funding of the China-Pakistan Joint Research Center for Earth Science
WOS研究方向Meteorology & Atmospheric Sciences
语种英语
出版者SPRINGER
WOS记录号WOS:000563843100003
资助机构National Key Research and Development Program of China ; Strategic Priority Research Program (A) of CAS ; National Natural Science Foundation of China ; CAS International Cooperation Program ; Research Funding of the China-Pakistan Joint Research Center for Earth Science
源URL[http://ir.igsnrr.ac.cn/handle/311030/158016]  
专题中国科学院地理科学与资源研究所
通讯作者Ma, Ning
作者单位1.China Meteorol Adm, Natl Climate Ctr, Beijing 100081, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
3.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China
4.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
5.China Agr Univ, Coll Water Resources & Civil Engn, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714		 Ma, Ning,Yu, Kunlun,Zhang, Yinsheng,et al. Ground observed climatology and trend in snow cover phenology across China with consideration of snow-free breaks[J]. CLIMATE DYNAMICS,2020:21.
APA Ma, Ning,Yu, Kunlun,Zhang, Yinsheng,Zhai, Jianqing,Zhang, Yongqiang,&Zhang, Hongbo.(2020).Ground observed climatology and trend in snow cover phenology across China with consideration of snow-free breaks.CLIMATE DYNAMICS,21.
MLA Ma, Ning,et al."Ground observed climatology and trend in snow cover phenology across China with consideration of snow-free breaks".CLIMATE DYNAMICS (2020):21.

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来源：地理科学与资源研究所

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