气候变化领域集成服务门户(CCPortal): Evaluation of the components of the heat balance of the Djankuat Glacier (central caucasus) during the period of ablation in 2007 2015

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DOI	10.21782/KZ1560-7496-2018-4(42-54
	Evaluation of the components of the heat balance of the Djankuat Glacier (central caucasus) during the period of ablation in 2007 2015
	Toropov P.A.; Shestakova A.A.; Smirnov A.M.; Popovnin V.V.
发表日期	2018
ISSN	15607496
卷号	22 期号:4
英文摘要	Analysis of mass-balance data monitoring of the Djankuat Glacier has demonstrated that the severe deglaciation over the past 20 years is associated with the ablation anomaly. We have analyzed the main components of the heat balance during the ablation seasons of 2007-2015 on the basis of meteorological measurements. The quantitative estimates of the accuracy of calculating turbulent heat fluxes using different methods have been presented. It has been revealed that the 'eddy covariance' technique can be used as a reference method. The assessment of the temporal variability of the basic components of heat balance has been carried out. The bulk formulas method seems to be the most accurate among other methods. The contribution of various factors to the formation of the melt layer has been estimated: the fraction of the radiation balance is 50-80 %, and that of turbulent heat exchange is 20-40 %. It has been found for the first time for a Caucasus glacier that turbulent heat-moisture exchange plays a more significant role in the formation of the heat balance than it had been previously. Partly, this can be explained by transformation of the heat balance structure associated with climate change. © 2018 Academic Publishing House Geo. All rights reserved.
英文关键词	Djankuat Glacier; Glacier heat balance; Glacio-climatology; Turbulent flux
学科领域	ablation; accuracy assessment; climate change; deglaciation; glacial erosion; glacier; heat balance; heat flux; quantitative analysis; turbulent flow; Djankuat Glacier; Kabardino-Balkaria; Russian Federation
语种	英语
scopus关键词	ablation; accuracy assessment; climate change; deglaciation; glacial erosion; glacier; heat balance; heat flux; quantitative analysis; turbulent flow; Djankuat Glacier; Kabardino-Balkaria; Russian Federation
来源期刊	Earth's Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119113
作者单位	Lomonosov Moscow State University, 1, Leninskie Gory, Moscow, 119991, Russian Federation; Institute of Geography, RAS, 29, Staromonetny per., Moscow, 119017, Russian Federation; Obukhov Institute of Atmospheric Physics, RAS, 3, Pyzhevsky per., Moscow, 119017, Russian Federation
推荐引用方式 GB/T 7714	Toropov P.A.,Shestakova A.A.,Smirnov A.M.,et al. Evaluation of the components of the heat balance of the Djankuat Glacier (central caucasus) during the period of ablation in 2007 2015[J],2018,22(4).
APA	Toropov P.A.,Shestakova A.A.,Smirnov A.M.,&Popovnin V.V..(2018).Evaluation of the components of the heat balance of the Djankuat Glacier (central caucasus) during the period of ablation in 2007 2015.Earth's Cryosphere,22(4).
MLA	Toropov P.A.,et al."Evaluation of the components of the heat balance of the Djankuat Glacier (central caucasus) during the period of ablation in 2007 2015".Earth's Cryosphere 22.4(2018).