气候变化领域集成服务门户(CCPortal): Spatial variations in snow cover and seasonally frozen ground over northern China and Mongolia, 1988-2010

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DOI	10.1016/j.gloplacha.2014.02.008
	Spatial variations in snow cover and seasonally frozen ground over northern China and Mongolia, 1988-2010
	Han, Lijian; Tsunekawa, Atsushi; Tsubo, Mitsuru; He, Chunyang; Shen, Miaogen
通讯作者	Han, LJ (通讯作者)
发表日期	2014
ISSN	0921-8181
EISSN	1872-6364
起始页码	139
结束页码	148
卷号	116
英文摘要	This study investigates the spatiotemporal variability of snow cover and seasonally frozen ground in northern China and Mongolia during 1988-2010 with passive microwave remote sensing records. We used the Goodison snow algorithm, adapted by introducing an additional soil freeze/thaw indicator to improve its efficiency in mountainous areas, and soil freeze-thaw algorithm to estimate snow cover onset, duration, ablation and, for the first time, interval between snow cover ablation and thawing of seasonally frozen ground. Snow cover onset, duration, and ablation tended to vary systematically from high to low latitudes, and to trend toward early/long/late in elevated areas. The ablation-thawing interval varied from low to high latitudes/elevations, and from dry to relatively humid areas, being shorter (<2 weeks) in the north and elevated areas but longer in some cold-dry and plain-mountain adjacent regions. During 1988-2010, snow cover showed a later/earlier trend of the onset/ablation on the western Tibetan Plateau and a belt from northeast China to central Mongolia, with trends being stronger in spring than in autumn. The time of snow cover ablation was negatively correlated with maximum temperature in the northern study area, indicating that temperature mainly advanced snow melting in spring. However, no significant relationship between temperature and the interval was observed, suggesting that other unknown factors impact the interval. Furthermore, in the north and on Mt. Changbai the interval changed by <2 weeks, whereas changes were larger in cold-dry and plain-mountain transitional areas, indicating changes of Earth surface systems in those areas. (C) 2014 Elsevier B.V. All rights reserved.
关键词	PASSIVE MICROWAVE DATA WATER EQUIVALENT CLIMATE-CHANGE VARIABILITY HEMISPHERE TRENDS CANADA TIME
英文关键词	passive microwave remote sensing; climatic warming; algorithm application; remote sensing of frozen ground and snow
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000336708400011
来源期刊	GLOBAL AND PLANETARY CHANGE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258340
推荐引用方式 GB/T 7714	Han, Lijian,Tsunekawa, Atsushi,Tsubo, Mitsuru,et al. Spatial variations in snow cover and seasonally frozen ground over northern China and Mongolia, 1988-2010[J]. 中国科学院青藏高原研究所,2014,116.
APA	Han, Lijian,Tsunekawa, Atsushi,Tsubo, Mitsuru,He, Chunyang,&Shen, Miaogen.(2014).Spatial variations in snow cover and seasonally frozen ground over northern China and Mongolia, 1988-2010.GLOBAL AND PLANETARY CHANGE,116.
MLA	Han, Lijian,et al."Spatial variations in snow cover and seasonally frozen ground over northern China and Mongolia, 1988-2010".GLOBAL AND PLANETARY CHANGE 116(2014).