The study investigated the effects of global direct radiative forcing due to carbonaceous aerosol on the climate in East Asia,using the CAM3 developed by NCAR.The results showed that carbonaceous aerosols cause negative forcing at the top of the atmosphere(TOA) and surface under clear sky conditions,but positive forcing at the TOA and weak negative forcing at the surface under all sky conditions.Hence,clouds could change the sign of the direct radiative forcing at the TOA,and weaken the forcing at the surfa...
【英文摘要】
The study investigated the effects of global direct radiative forcing due to carbonaceous aerosol on the climate in East Asia,using the CAM3 developed by NCAR.The results showed that carbonaceous aerosols cause negative forcing at the top of the atmosphere(TOA) and surface under clear sky conditions,but positive forcing at the TOA and weak negative forcing at the surface under all sky conditions.Hence,clouds could change the sign of the direct radiative forcing at the TOA,and weaken the forcing at the surfa...
【基金】
supported by Na-tional Basic Research Program of China (Grant No.2006CB403707);
the public Meteorology Special Foundation of MOST (Grant No. GYHY200706036);
the National Key Technology R & D Program (Grant No.2007BAC03A0)
【更新日期】
2009-06-11
【分类号】
P461.8
【正文快照】
1. Introduction Carbonaceous aerosols, defined as the sum of black carbon (BC) and organic carbon (OC), are an impor- tant component of the aerosol mix in the atmosphere. Black carbon is produced when biomass or fossil fuel is insu?ciently combusted. It a
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