Simulation of the direct effects of dust aerosol on climate in East Asia

作     者：Jian Wu Congbin Fu Zhiwei Han Jianping Tang Yanyan XU Renjian Zhang 

作者机构：Department of Atmospheric Science Yunnan University Kunming 650091 China Key Laboratory of Regional Climate-Environment Research for Temperate East Asia Institute of Atmospheric Physics Chinese Academy of SdencesBeijing 100029 China Department of Atmaspheric Science Nanfing University Nanfing 210093 China Yunnan Meteorological Bureau Kunming 650031 China 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2010年第8卷第4期

页      面：301-307页

核心收录：

学科分类：07[理学] 0817[工学-化学工程与技术] 070601[理学-气象学] 070602[理学-大气物理学与大气环境] 0805[工学-材料科学与工程（可授工学、理学学位）] 0706[理学-大气科学] 0703[理学-化学] 0702[理学-物理学] 

基　　金：sponsored by the National Key Program for Developing Basic Sciences of China(No.2006CB400506),KZCX2-YW-Q11-03 the Hundred Talents Program(Aerosol Characteristics and its Climatic Impact)of the Chinese Academyof Sciences sponsored by the Chinese Natural Science Foundation(40975092) the Natural Science Foundation(2009CD021) the Foundation of Younger Scholars in Science and Technology(2009CI046)of Yunnan Province 

主　　题：Dust Radiative forcing Temperature Precipitation East Asia 

摘      要：The results from some general circulation models show distinct radiative forcing （RF） by dust aerosol, which potentially has an effect on climate change. The direct RF and regional climatic effects of dust aerosol over the East Asian region are investigated in this study using NCAR＇s Community Atmospheric Model version 3.1. The negative RF at the top of the atmosphere （TOA） and the surface （SRF） has been revealed except for some high-albedo regions, which leads to a decrease in the surface air temperature and brings an increase of atmospheric radiative heating under both clear- and all-sky conditions. The decrease in the surface air temperature can be found over a wide region that includes the Indian peninsula and northwest China. It accompanies an increase in eastern China and the Korean peninsula, and temperature changes are not limited to regions with a large dust optical depth. A belt of vapor increase is revealed from the Indian peninsula extending east to northern China, while vapor content evidently deceases in southwest China. An increase in precipitation can also be found in the belt of increased vapor accompanying the reduction of precipitation across the regions to the south of 30~N. The pattern of rainfall change helps to offset the trend of increasing wetness in the south and increasing dryness in the north of China in recent years.