气候变化领域集成服务门户(CCPortal): The footprint of Asian monsoon dynamics in the mass and energy balance of a Tibetan glacier

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DOI	10.5194/tc-6-1445-2012
	The footprint of Asian monsoon dynamics in the mass and energy balance of a Tibetan glacier
	Moelg, T.; Maussion, F.; Yang, W.; Scherer, D.
通讯作者	Molg, T (通讯作者)
发表日期	2012
ISSN	1994-0416
EISSN	1994-0424
起始页码	1445
结束页码	1461
卷号	6 期号:6
英文摘要	Determinations of glacier-wide mass and energy balance are still scarce for the remote mountains of the Tibetan Plateau, where field measurements are challenging. Here we run and evaluate a physical, distributed mass balance model for Zhadang Glacier (central Tibet, 30 degrees N) based on in-situ measurements over 2009-2011 and an uncertainty estimate by Monte Carlo and ensemble strategies. The model application aims to provide the first quantification of how the Indian Summer Monsoon (ISM) impacts an entire glacier over the various stages of the monsoon's annual cycle. We find a strong and systematic ISM footprint on the interannual scale. Early (late) monsoon onset causes higher (lower) accumulation, and reduces (increases) the available energy for ablation primarily through changes in absorbed shortwave radiation. By contrast, only a weak footprint exists in the ISM cessation phase. Most striking though is the core monsoon season: local mass and energy balance variability is fully de-coupled from the active/break cycle that defines large-scale atmospheric variability during the ISM. Our results demonstrate quantitatively that monsoon onset strongly affects the ablation season of glaciers in Tibet. However, we find no direct ISM impact on the glacier in the main monsoon season, which has not been acknowledged so far. This result also adds cryospheric evidence that, once the monsoon is in full swing, regional atmospheric variability prevails on the Tibetan Plateau in summer.
关键词	NAM CO BASIN SURFACE-ENERGY LONGWAVE RADIATION ZHADANG GLACIER AIR-TEMPERATURE SUMMER MONSOON CLIMATE-CHANGE ICE CAPS PRECIPITATION MODEL
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000312698800016
来源期刊	CRYOSPHERE
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/258003
推荐引用方式 GB/T 7714	Moelg, T.,Maussion, F.,Yang, W.,et al. The footprint of Asian monsoon dynamics in the mass and energy balance of a Tibetan glacier[J]. 中国科学院青藏高原研究所,2012,6(6).
APA	Moelg, T.,Maussion, F.,Yang, W.,&Scherer, D..(2012).The footprint of Asian monsoon dynamics in the mass and energy balance of a Tibetan glacier.CRYOSPHERE,6(6).
MLA	Moelg, T.,et al."The footprint of Asian monsoon dynamics in the mass and energy balance of a Tibetan glacier".CRYOSPHERE 6.6(2012).