摘要
通过对 2 0 0 0～ 2 0 0 4年 2～ 4月东亚地区人为和生物质燃烧排放黑炭气溶胶的模拟 ,分析 5年平均的结果 ,发现 :春季 ,东亚地区印度、中南半岛、中国东部存在三个显著的黑炭气溶胶大值区 ,最大柱含量均在 1mg·m- 2 以上 ,印度半岛的排放能影响中国南方 2 5°N～ 30°N之间区域 ,而中南半岛的排放能影响中国 2 5°N以南的大陆地区。85 0～ 70 0hPa是中南半岛排放输送进入中国的主要层次。中国华北和东北的排放向东输送影响朝鲜半岛、日本等地 ,但中国春季的输出量小于境外对中国的输入量 ;境外注入对中国西部和江南地区影响显著 ,对中国北方地区影响较小。黑炭气溶胶引起晴空和云天大气顶净向下辐射通量增大 ,地表净向下辐射通量减小 ,辐射通量变化最显著地区在中国四川、湖北一带 ,大气顶辐射通量增大最大为 4W·m- 2 ,地表通量减小最大约 - 5 5W·m- 2 。
The distribution transportation and radiative effects of black carbon aerosol due to anthropogenic and biomass burning emission over the East Asia region have been simulated in springtime from 2000 to 2004. It has been revealed that there exist three main column burden regions: Indian Peninsula, Indo-China Peninsula and East China, the column burden over the three regions exceeds 1 mg·m -2. Pollutant from Indian Peninsula can be transported into China, and affects the zonal region between 25°N and 30°N in Chinese mainland. Emission from Indo-China Peninsula can contribute to colume burden to the south of 25°N over Chinese mainland. The maximum horizontal flux of Black Carbon (BC) from Indo-China Peninsula emerges between 850-700 hPa. BC from North China and Northeast China can pollute Korea Peninsula and Japan due to eastern jet. Input flux is larger than output flux over China mainland, and it has more obvious effect on West China and South China than North China due to emission from other counries to China. The net downward radiative flux at Top of Atmosphere (TOA) has been increased by BC aerosol in both clear and cloudy sky, but that at the surface is opposite. The increament value emerges over Chinese Sichuan basin and Hubei area, 4 W·m -2 to TOA flux and -5 5 W·m -2 to surface flux.
出处
《大气科学》
CSCD
北大核心
2005年第1期111-119,共9页
Chinese Journal of Atmospheric Sciences
基金
国家自然科学基金资助项目 40 2 0 50 1 6
