Black Carbon (BC) in the snow of glaciers in west China and its potential effects on albedos
Black Carbon (BC) in the snow of glaciers in west China and its potential effects on albedos
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DOI：
10.1016/j.atmosres.2008.09.007
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发表时间：
2009-03-01
影响因子：
5.5
通讯作者：
Pu, Jianchen
中科院分区：
文献类型：
--
作者：
Ming, Jing;Xiao, Cunde;Pu, Jianchen
对2004-2006年中国西部部分冰川雪中黑碳浓度进行了测定。较低的地点出现较高的浓度，可能是由于地形（如海拔）的影响。青藏高原外天山积雪中的BC浓度普遍高于高原内部，春季的强融化加上高原内部区域/局地排放的增加，都可能使中央TP的BC浓度高于边缘TP。全球测得的雪/冰中的BC浓度之间的比较表明，采样点远离BC强排放区（北中纬度）的距离可能是雪/冰中BC浓度的原因。对部分冰川的还原度的估算表明，沉积在冰川表层的BC可能加速了这些冰川的融化，如HXR 48和MEG 3冰川表层受到强烈的BC污染，其还原度超过5%。(C)2008 Elsevier B. V.保留所有权利。
Black carbon concentrations in the snow collected from some selected glaciers in west China during 2004-2006 were measured. Higher concentrations appeared at lower sites, possibly due to the topography (e.g. altitude) effect. BC concentrations in snow of Tienshan Mountains outside the Tibetan Plateau JP) were generally higher than those inside the TP, and strong melting in spring added on more regional/local emissions from the inner TP might both contribute higher concentrations for the central TP than those on the margin of the TP. Comparison between global measured BC concentrations in snow/ice suggested the distance of the sampling site away from strong BC-emitting areas (north mid-latitudes) could be responsible for BC concentrations in snow/ice. A rough estimate for the reduced albedos in some glaciers suggested BC deposited in the surface might accelerate the melt of these glaciers in west China, e.g. HXR48 and MEG3 which were strongly contaminated by BC in their surfaces, the reduced albedos were over 5% due to the BC deposits. (C) 2008 Elsevier B.V. All rights reserved.