【摘要】 气溶胶的气候效应是目前全球气候变化和数值模拟预测研究中的关键环节和最热门的前沿科学问题 ,也是了解气候变化机理的基础。为此 ,通过对兰州市城关区冬季不同高度大气气溶胶及太阳辐射的监测 ,对该地区气溶胶质量浓度状况及其辐射效应进行了分析更多还原

【Abstract】 Climatic effect of aerosol is a key link and heated front topic in the studies of global climatic change and numerical simulation, as well as the basis for understanding the climatic change mechanism. For this, we monitored the TSP and solar radiation at different heights in Chengguan district of Lanzhou city and Gaolan mountain, respectively, in winter (December 1～10, 1999), and tried to reveal the distribution of quality concentration of aerosols in air and its effects on solar radiation. The results are as follws: (1) The pollution of TSP was very serious in winter in Chengguan district, the daily quality concentration of TSP was 0.9697mg·m -3 , and it can be 3.23 times for the second grade standard; (2) The impact of TSP on solar radiation is significont, comparing with Gaolan Mountain, the lower level atmosphere decreases the solar direct radiation by 62.5%, increases solar diffuse radiation by 50.6%, the total solar radiation is reduced by 14.1%; (3) TSP affects the development of the lower level atmosphere temperature inversion layer by absorbing solar radiation, which further has an effect on the dispersion of TSP.更多还原