Impacts of meteorological parameters and emissions on decadal,interannual, and seasonal variations of atmospheric black carbon in the Tibetan Plateau

作     者：MAO Yu-Hao LIAO Hong 

作者机构：State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC) Institute of Atmospheric Physics Chinese Academy of Sciences School of Environmental Science and Engineering Nanjing University of Information Science and Technology 

出 版 物：《Advances in Climate Change Research》 (气候变化研究进展（英文版）)

年 卷 期：2016年第7卷第3期

页      面：123-131页

核心收录：

学科分类：07[理学] 070602[理学-大气物理学与大气环境] 0706[理学-大气科学] 

基　　金：supported by the National Basic Research Program of China (973 program, Grant 2014CB441202) the Strategic Priority Research Program of the Chinese Academy of Sciences Strategic Priority Research Program (Grant No. XDA05100503) the National Natural Science Foundation of China under grants 91544219, 41475137, and 41321064 

主　　题：Black carbon Tibetan Plateau Interannual variations South Asian summer monsoon 

摘      要：We quanti?ed the impacts of variations in meteorological parameters and emissions on decadal, interannual, and seasonal variations of atmospheric black carbon(BC) in the Tibetan Plateau for 1980-2010 using a global 3-dimensional chemical transport model driven by the Modern Era Retrospective-analysis for Research and Applications(MERRA) meteorological ?elds. From 1980 to 2010, simulated surface BC concentrations and all-sky direct radiative forcing at the top of the atmosphere due to atmospheric BC increased by 0.15 μg m^(-3)(63%) and by 0.23 W m^(-2)(62%), respectively, averaged over the Tibetan Plateau(75-105°E, 25-40°N). Simulated annual mean surface BC concentrations were in the range of 0.24-0.40 μg m^(-3) averaged over the plateau for 1980-2010, with the decadal trends of 0.13 μg m^(-3)per decade in the 1980 s and 0.08 in the 2000 s. The interannual variations were -5.4% to 7.0% for deviation from the mean, 0.0062 μg m^(-3) for mean absolute deviation, and 2.5% for absolute percent departure from the mean. Model sensitivity simulations indicated that the decadal trends of surface BC concentrations were mainly driven by changes in emissions, while the interannual variations were dependent on variations of both meteorological parameters and emissions. Meteorological parameters played a crucial role in driving the interannual variations of BC especially in the monsoon season.