摘要
利用IAP/LASGGOALS 4 0海气耦合模式 ,“显式”考虑了硫酸盐气溶胶的直接作用 ,并且引入德国马普气象研究所的三维浓度分布资料 ,模拟计算了硫酸盐气溶胶的辐射强迫。主要结果为 :全球气溶胶年平均的辐射强迫为 - 0 2 9Wm- 2 ,在IPCCTAR给定的范围内 ,空间分布上具有明显的地域性 ,几个大值地区分别为东亚、西欧和北美 ,它们的中心值均超过 - 1 5Wm- 2 ,南美、澳大利亚以及非洲南部的辐射强迫介于 - 0 2～- 0 4Wm- 2 之间 ,而海洋和偏远的大陆地区 ,则基本上不受人为硫酸盐气溶胶的影响 ;计算的东亚地区硫酸盐气溶胶的平均辐射强迫为 - 0 75Wm- 2 ,约为全球平均的 2 5倍 ,为北半球平均的 1 6倍。文中还讨论了全球硫酸盐气溶胶对温室气体辐射强迫的减缓作用。
The direct effect of sulfate aerosol was explicitly represented in IAP/LASG GOAL S 4 0 coupled model. The model simulates the radiative forcing from 1900 to 199 0 by introducing into the 3-D concentration of sulfate aerosol simulated by MPI in Germany, the results show that the global mean radiative forcing due to sulf ate aerosol is -0 29 W m -2 which belongs to the estimates of the late st IPCC scientific report. The forcing distribution is characterized with suffic iently large in a number of regions including east Asia, western Europe and nort hern America, which all surpass -1 5 W m -2 in their maximum value. Th e radiative forcing in South America, Australia and the south of Africa is gener ally between -0 2 W m -2 to -0 4 W m -2. However, The marine or remote continents were little influenced by anthropogenic sulfate aerosols.
出处
《气候与环境研究》
CSCD
2004年第3期454-464,共11页
Climatic and Environmental Research
基金
国家自然科学基金资助项目 40 2 3 1 0 0 4和49875 0 1 2资助
