首页|Mitigation of black carbon emissions could immediately reduce 6.3％of glacier melting in the Qilian Mountains

Mitigation of black carbon emissions could immediately reduce 6.3％of glacier melting in the Qilian Mountains

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Global warming in tandem with surface albedo reduction caused by black carbon(BC)deposition on glaciers accelerated glacier melting;however,their respective contributions remain unclear.Glaciers in the Qilian Mountains are crucial for the development of oases in the Hexi Corridor;however,their area has decreased by more than 20％over the past half-century.Thus,this study developed a dynamic deposition model for light-absorbing particles(LAPs),coupled with a surface energy and mass balance model.We comprehensively assessed the effects of BC and warming on the melting of a typical glacier in the Qilian Mountains based on the coupled model.BC on the glacier surface caused 13.1％of annual glacier-wide melting,of which directly deposited atmospheric BC reduced the surface albedo by 0.02 and accounted for 9.1％of glacier melting.The air temperature during 2000-2010 has increased by 1.5 ℃ relative to that during the 1950s,accounting for 51.9％of current glacier melting.Meanwhile,BC emission have increased by 4.6 times compared to those of the early Industrial Revolution recorded in an ice core,accounting conservatively for 6.3％of current glacier melting.Mitigating BC emissions has a limited influence on current glacier melting;however,in the long-term,mitigation should exert a noteworthy impact on glacier melting through the self-purification of glaciers.

GlacierMeltingBlack carbonSimulationQilian Mountains

Ji-Zu CHEN、Wen-Tao DU、Shi-Chang KANG、Xiang QIN、Wei-Jun SUN、Li-Hui LUO、Yang LI、Jun-Hua YANG、You-Yan JIANG

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Qilian Shan Station of Glaciology and Eco-environment,Key Laboratory of Cryospheric Science and Frozen Soil Engineering,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China

Zhangye Meteorological Bureau,Zhangye 734000,China

Gansu Provincial Industry Technology Center of Intelligent Equipment and Big Data for Disaster Prevention,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Science,Lanzhou 730000,China

College of Geography and Environment,Shandong Normal University,Jinan 250014,China

Institute of International Rivers and Eco-Security,Yunnan University,Kunming 650500,China

Lanzhou Regional Climate Center Lanzhou 730020,China

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2024

10.1016/j.accre.2024.06.010

气候变化研究进展(英文版)
国家气候中心

气候变化研究进展(英文版)

影响因子：0.806
ISSN：1674-9278
年,卷(期)：2024.15(4)