利用三维区域欧拉型硫化物输送模式,研究了90年代中期东亚地区人为硫酸盐柱含量的空间分布。在此基础上,利用一个两层多次反射模式估算了东亚地区人为硫酸盐气溶胶直接辐射强迫,并分析了辐射强迫的地理分布和季节变化特征。结果表明,东亚地区年平均的人为硫酸盐直接辐射强迫约为-0.7W·m^-2。直接辐射强迫空间分布具有明显的季节变化和区域特征,辐射强迫的这种变化特征强烈地依赖于人为硫酸盐柱含量的季节变化和区域分布。

A three-dimensional regional Eulerian model of sulfur transport is used to simulate anthropogenic sulfate column burden over Eastern Asia during mid-1990s. Furthermore, a simple multiple reflective radiation model are used to assess the direct radiative forcing(DRF) due to anthropogenic sulfate over Eastern Asia. The geographic distributions and seasonal variations of DRF are also analyzed. The simulated results indicate the regional annual mean DRF due to anthropogenic sulfate is-0.7W·m^-2. The DRF appears to be obvious geographical and seasonal patterns. Those geographical and seasonal cycles of DRF are mainly depending on the geographical and seasonal variations of sulfate loadings.