DOI: 10.1002/jgrd.50760
论文题名: Mass balance of a maritime glacier on the southeast Tibetan Plateau and its climatic sensitivity
作者: Yang W. ; Yao T. ; Guo X. ; Zhu M. ; Li S. ; Kattel D.B.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 17 起始页码: 9579
结束页码: 9594
语种: 英语
英文关键词: climatic sensitivity
; glacier mass balance
; Tibetan glacier
Scopus关键词: Climatology
; Computer simulation
; Experiments
; Atmospheric circulation
; Atmospheric circulation patterns
; Causal explanations
; climatic sensitivity
; Glacier mass balance
; Physical parameters
; Surface mass balance
; Tibetans
; Climate models
; air temperature
; atmospheric modeling
; data set
; environmental conditions
; geoaccumulation
; glacier mass balance
; global warming
; in situ measurement
; meteorology
; numerical model
; seasonality
; sensitivity analysis
; theoretical study
; vortex
; vulnerability
; China
; Qinghai-Xizang Plateau
英文摘要: Based on glaciometeorological measurements and mass balance stake records during the 5 year period of 2005-2010 on the southeast Tibetan Plateau, an energy-mass balance model was applied to study the surface mass balance of the Parlung No. 94 Glacier, as well as its response to regional climate conditions. The primary physical parameters involved in the model were locally calibrated by using relevant glaciometeorological data sets. The good agreement between the snowpack height/mass balance simulations and the in situ measurements available from a total of 12 monitoring stakes over this glacier confirmed the satisfactory performance of the energy-mass balance model. Results suggested that the recent state of the Parlung No. 94 Glacier was far removed from the "ideal" climatic regime leading to zero mass balance, with its annual mass balance of approximately -0.9 m water equivalent during 2005-2010. Climatic sensitivity experiments were also carried out to interpret the observed mass balance changes, and the experiments demonstrated that the maritime glaciers concerned herein were theoretically more vulnerable to ongoing climate warming on the Tibetan Plateau than potential changes in the amount of precipitation. A plausible causal explanation for the recent glacier shrinkage in this region was concerned with the increasing air temperature. Moreover, both the mass balance simulations and the field measurements indicated that the mass accumulation over this maritime glacier occurred primarily in the boreal spring. Such "spring-accumulation type" glaciers are presumed to be distributed mainly within a narrow wedge-shaped region along the Brahmaputra River. Climatic sensitivities of the glacier mass balance are also found to be closely linked to the regional precipitation seasonality that is simultaneously modulated by various atmospheric circulation patterns, such as the southern westerlies, the Bay of Bengal vortex in the spring season, and the Indian monsoon in the summer season. Key Points Mass balance of Parlung No. 94 Glacier was negative during the past five yearsGlacier mass balance is influenced by regional-scale atmospheric circulations ©2013. American Geophysical Union. All Rights Reserved. 资助项目: 40901047
; 40905003
; 41371085
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63326
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Yang W.,Yao T.,Guo X.,et al. Mass balance of a maritime glacier on the southeast Tibetan Plateau and its climatic sensitivity[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(17)