气候变化领域集成服务门户(CCPortal): Long-Term Temporal Scale-Dependent Warming Effects on the Mass Balance in the Dongkemadi Glacier, Tibetan Plateau

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DOI	10.1029/2020JD033105
	Long-Term Temporal Scale-Dependent Warming Effects on the Mass Balance in the Dongkemadi Glacier, Tibetan Plateau
	Liang, Liqiao; Cuo, Lan; Liu, Qiang
通讯作者	Liang, LQ (通讯作者)
发表日期	2020
ISSN	2169-897X
EISSN	2169-8996
卷号	125 期号:20
英文摘要	Understanding how climate change impacts glaciers is important in predicting their prospective response and crucial in forecasting water supplies and potential influences within surrounding lowland areas. This study evaluated annual, seasonal, and monthly warming effects on the mass balance in the Dongkemadi (DKMD) Glacier throughout 1960-2009. Results showed an increasing trend in annual, seasonal, and monthly scale air temperature variation: high during the cool season (0.0347 degrees C a(-1)) and low during the warm season (0.0222 degrees C a(-1)). Warming rates variability effects at all three scales were roughly the same. Seasonal and monthly warming rates produced roughly the same effect on glacier mass balance, while the annual warming rate overestimated annual mass balance by 20.0%. July produced the largest monthly warming effect overestimation at an annual warming rate (11.9 mm w.e.; 29.3%), followed by August and June. Furthermore, increases in annual melt energy (approximately 70%) throughout the study period primarily resulted from increases in net radiation and turbulent heat flux, which mainly occurred during the warm season (>96%). Proportional increases in warming-induced rainfall caused a decrease in mass balance while contributing to differing warming rate effects through reductions in mass inputs and albedo rather than through increases in rain-induced heat flux. Results confirmed the effectiveness of using seasonal scale warming rates to investigate warming effects on glacier and meltwater changes in the Dongkemadi Glacier. This study provides valuable information to accurately evaluate warming effects on energy/mass balance of glaciers worldwide.
关键词	CLIMATE-CHANGE HYDROLOGICAL CYCLE RUNOFF CHANGES TEMPERATURE SENSITIVITIES VARIABILITY RADIATION HUMIDITY PATTERNS IMPACTS
英文关键词	warming effects; timescales; glacier mass balance; glacier energy balance; glacier modeling; Tibetan Plateau
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000588398800014
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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/259809
推荐引用方式 GB/T 7714	Liang, Liqiao,Cuo, Lan,Liu, Qiang. Long-Term Temporal Scale-Dependent Warming Effects on the Mass Balance in the Dongkemadi Glacier, Tibetan Plateau[J]. 中国科学院青藏高原研究所,2020,125(20).
APA	Liang, Liqiao,Cuo, Lan,&Liu, Qiang.(2020).Long-Term Temporal Scale-Dependent Warming Effects on the Mass Balance in the Dongkemadi Glacier, Tibetan Plateau.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(20).
MLA	Liang, Liqiao,et al."Long-Term Temporal Scale-Dependent Warming Effects on the Mass Balance in the Dongkemadi Glacier, Tibetan Plateau".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.20(2020).