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Potential Effect of Black Carbon on Glacier Mass Balance during the Past 55 Years of laohugou Glacier No. 12, Western Qilian Mountains

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Journal of Earth Science 2020年第2期31卷 410-418页

作者： Jizu Chen Xiang Qin Shichang Kang Wentao Du Weijun Sun Yushuo Liu Qilian Shan Station of Glaciology and Ecological Environment State Key Laboratory of Cryospheric SciencesNorthwest Institute of Eco-Environment and ResourcesChinese Academy of Sciences(CAS)Lanzhou 730000China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100085China College of Geography and Environment Shandong Normal UniversityJinan 250014China

This study reconstructed the annual mass balance(MB)of laohugou Glacier No.12 in the western Qilian Mountains during 1961–*** annual MB was calculated based on a temperature-index and an accumulation model with inputs of daily air temperature and precipitation recorded by surrounding meteorological *** model was calibrated by in-situ MB measurements conducted on the glacier during 2010–*** in constructed annual MB had three *** Phase Ⅰ(1961-1984),glacier-wide MB values were slightly positive with an average MB of 24±276 mm w.e.(water equivalent).During Phase Ⅱ(1984-1995),the MB values became slightly negative with an average MB of?50±276 mm w.e..The most negative MB values were found during Phase Ⅲ(1996–2015),with an average MB of?377±276 mm *** analysis showed that the warming led to accelerated glacier mass loss despite a persistent increase of precipitation during the analysis ***,an increase of black carbon deposited on the glacier surface since the 1980s could have contributed to intensified glacier *** simulations and measurements of MB on the Urumqi Glacier No.1,26%of glacier melt caused by black carbon could be identified.

关键词： laohugou Glacier No.12 climate change temperature-index model mass balance black carbon

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