Climate Warming Favoring Sublimation on a Westerlies-Controlled Glacier of Tibetan Plateau

doi:10.1029/2023JD039332

	Climate Warming Favoring Sublimation on a Westerlies-Controlled Glacier of Tibetan Plateau
	Guo, Shuhai 1; Li, Yueping2 ; Chen, Rensheng 1
	2023-12-27
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
卷号	128 期号:24
摘要	During the past few decades, the climate over the entire TP changed obviously with general warming and the decreasing trends in wind speed and air humidity. As an important hydrological process of mass losses on the TP glaciers, especially during the cold period, sublimation may be influenced deeply by the climate changes. Therefore, it is imperative to identify the crucial factors controlling and limiting glacier sublimation and analyze its possible changes in the future. The sublimation on a flat-topped glacier of TP was found to be more intense in spring (0.41 mm d-1) and autumn (0.34 mm d-1) and weak in winter (0.27 mm d-1) and summer (0.16 mm d-1). At yearly scale, sublimation was most sensitive to the surface temperature, followed by air temperature and humidity, and was relatively insensitive to wind speed. However, the main influencing factor was air humidity during summer, showing a strong inhibition on sublimation. The very low surface temperature was the most crucial variable limiting winter sublimation with the highest sensitivity coefficient than other variables. Current sublimation was also found to be more sensitive to the increasing temperature than the decreased air humidity and wind speed. If the climate trends continue, and the glacier climate has the relatively consistent change trend with that of entire TP, glacier sublimation will be more likely to increase, especially during winter. The climate warming trend in the TP has been found to be more sensitive and accelerated since the end of last century. Our study found that, on the August-one glacier, the very high air humidity and low surface temperature were the most crucial variables limiting summer and winter sublimation, respectively. The glacier sublimation was significantly more sensitive to the surface and air temperature than air humidity and wind speed at yearly scale. With a general warming and the decreasing trends in wind speed and air humidity over the entire TP, sublimation will be more likely to increase as the temperature rises on this glacier, especially during winter. Very high air humidity and low surface temperature were the most crucial variables limiting summer and winter sublimation, respectivelyGlacier sublimation was significantly more sensitive to the surface and air temperature than air humidity and wind speed at yearly scaleUnder climate warming, sublimation will be more likely to increase as the temperature rises on this glacier, especially during winter
关键词	westerlies-controlled glacier sublimation sensitivity analysis climate warming
DOI	10.1029/2023JD039332
收录类别	SCIE
ISSN	2169-897X
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:001123665200001
出版者	AMER GEOPHYSICAL UNION
原始文献类型	Article
EISSN	2169-8996
引用统计	被引频次[WOS]：0 [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.lzufe.edu.cn/handle/39EH0E1M/35581
专题	工商管理学院
通讯作者	Chen, Rensheng
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China; 2.Lanzhou Univ Finance & Econ, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Guo, Shuhai,Li, Yueping,Chen, Rensheng. Climate Warming Favoring Sublimation on a Westerlies-Controlled Glacier of Tibetan Plateau[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2023,128(24).
APA	Guo, Shuhai,Li, Yueping,&Chen, Rensheng.(2023).Climate Warming Favoring Sublimation on a Westerlies-Controlled Glacier of Tibetan Plateau.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,128(24).
MLA	Guo, Shuhai,et al."Climate Warming Favoring Sublimation on a Westerlies-Controlled Glacier of Tibetan Plateau".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 128.24(2023).