Disturbance of light-absorbing aerosols on the albedo in a winter snowpack of Central Tibet  

作　　者：Jing Ming Pengling Wang Shuyu Zhao Pengfei Chen 

机构地区：[1]National Climate Center, China Meteorological Administration [2]State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences [3]Institute of Tibetan Plateau Research, Chinese Academy of Sciences

出　　处：《Journal of Environmental Sciences》2013年第8期1601-1607,共7页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.40901046);the National Natural Science Foundation of China (No.41121001);the Global Change Research Program of China (No.2010CB951401);the State Key Laboratory of Cryospheric Sciences (No.SKLCS-ZZ-2012-01-06);China Meteorological Administration (No.GYHY201106023);the Climate Change Science Foundation of CMA (2013–2014)

摘　　要：A field observation on the albedo of the snowpack in Central Tibet was conducted in the Nam Co region in the winter of 2011. Snow properties, including grain size and density, were measured in the field, and surface-layer snow samples （down to 5 cm） were collected. The average concentrations of black carbon and dust were 72 ppbm （close to that in the glaciers of Mt. Nyainqentanglha） and 120 ppmm, respectively. Inverse trends were found to exist between the albedo of the snowpack and light-absorbing aerosols （LAAs） as well as grain size growth. Modeling showed that black carbon, dust, and grain growth in the winter snowpack can reduce the broadband albedo by 11%, 28%, and 61%, respectively.A field observation on the albedo of the snowpack in Central Tibet was conducted in the Nam Co region in the winter of 2011. Snow properties, including grain size and density, were measured in the field, and surface-layer snow samples （down to 5 cm） were collected. The average concentrations of black carbon and dust were 72 ppbm （close to that in the glaciers of Mt. Nyainqentanglha） and 120 ppmm, respectively. Inverse trends were found to exist between the albedo of the snowpack and light-absorbing aerosols （LAAs） as well as grain size growth. Modeling showed that black carbon, dust, and grain growth in the winter snowpack can reduce the broadband albedo by 11%, 28%, and 61%, respectively.

关 键 词：ALBEDO black carbon dust SNOW Tibetan Plateau 

分 类 号：P422.3[天文地球—大气科学及气象学]