Influences of external forcing changes on the summer cooling trend over East Asia

被引:38
作者
He, Bian [1 ,2 ]
Bao, Qing [2 ]
Li, Jiandong [2 ]
Wu, Guoxiong [2 ]
Liu, Yimin [2 ]
Wang, Xiaocong [2 ]
Sun, Zhaobo [1 ]
机构
[1] Nanjing Univ Informat Sci & Technol, Coll Atmospher Sci, Nanjing 210044, Jiangsu, Peoples R China
[2] Chinese Acad Sci, Inst Atmospher Phys, LASG, Beijing 100029, Peoples R China
基金
美国国家科学基金会;
关键词
SEA-SURFACE TEMPERATURE; BLACK CARBON AEROSOLS; ANTHROPOGENIC SULFATE; TIBETAN PLATEAU; LAND-USE; CLIMATE; MONSOON; CHINA; VARIABILITY; IMPACT;
D O I
10.1007/s10584-012-0592-4
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Observations indicate a surface cooling trend during the East Asian summer in recent decades, against a background of global warming. This cooling trend is re-examined using station data from 1951 to 2007, and atmospheric general circulation model (AGCM) simulations are performed to investigate the possible influence of changes in external forcing. The numerical experiments are designed to investigate the effects of four types of external forcing: greenhouse gases (GHGs), Total Solar Irradiance (TSI), ozone, and the direct effects of aerosols. Results indicate that external forcing contributes to the cooling trend over East Asia. Furthermore, GHGs, and to a lesser degree the direct effects of aerosols, are the main contributors to the cooling trend. The possible linkages between the external forcings and the cooling trend are discussed.
引用
收藏
页码:829 / 841
页数:13
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