中文摘要：

利用耦合了陆面和化学过程的区域气候模式Reg CM4.0,对2000—2008年亚洲地区碳气溶胶的时空分布特征及其直接气候效应进行了模拟研究。结果表明：碳气溶胶在冬夏两季主要分布于印度半岛和我国中东部地区,其中印度半岛东北部和四川盆地地区为主要的大值区。夏季随着亚洲季风的爆发和雨季的到来,碳气溶胶的含量和分布范围较冬季有明显的减弱和北移。冬季碳气溶胶对整个亚洲地区的地表主要起冷却作用,而夏季在我国的四川盆地、华北和华南等地则出现了升温现象,这种局部升温现象与黑碳的＂半直接效应＂密切相关。碳气溶胶对降水影响的空间分布呈现出明显的地域不一致性,对南亚夏季风有一定的增强作用。东亚和南亚地区对碳气溶胶的气候响应存在较大差异,主要表现在夏季南亚地区低层降温、中高层增温,而东亚地区的增温却主要集中在低层。

英文摘要：

The regional climate model RegCM4.0 coupled with land surface and simple chemistry/aerosol module is used to simulate the spatial-temporal distributions and direct effect on climate of carbon aerosols over Asian area from 2000 to 2008.Results show that carbon aerosols are mostly concentrated in Indian peninsula and middle-eastern China in winter and summer, with maximum values in northeastern Indian peninsula and Sichuan Basin of China.With the outbreak of Asian summer monsoon and the arrival of the rainy season, the loading （distribution） of carbon aerosols significantly decreases （ moves northward） in summer comparing to those in winter.In winter, the surface temperature is decreased by carbon aerosols over Asian area. In summer, the surface temperature is increased in Sichuan Basin, North China and South China,which is caused by the ＂semi-direct effect＂ of black carbon.There are significant differences in precipitation change caused by carbon aerosols among the different areas. Carbon aerosols also can strengthen South Asian summer monsoon.There are big differences in the climate responses to carbon aerosols between East Asia and South Asia.In summer,the low level air temperature is decreased and the middle-upper level air temperature is increased in South Asia, but warming mainly appears in the lower level in East Asia.