气溶胶大气对太阳辐射的吸收

大气气溶胶对大气吸收太阳辐射的影响有许多人研究过。目前计算大气吸收太阳辐射的数值模式多数仍忽略大气气溶胶的作用。大气气溶胶一方面本身吸收太阳辐射;一方面对太阳辐射多次散射,使阳光在大气中传输更长的路程,增加了吸收物质对太阳辐射的吸收。计算表明:大气气溶胶对大气吸收太阳辐射的作用是显著而不能忽略的。

THE ABSORPTION OF SOLAR RADIATION BY AEROSOL ATMOSPHERE

The discrete-ordinate and two stream methods were applied to solve the multiple scattered radiation transfer equations for inhomogeneous aerosol atmosphere. The accurate absorption of water vapor, carbon dioxide and ozone were calculated, band by band calculations have been carried out for the heating rate profiles and total solar radiation absorption of the atmosphere in clear, hazy and dust storm conditions. When the visibility is equal to 5,10 and 15 km, the solar energy absorbed by the atmosphere is 25,33 and 52 percent larger than the condition when the effect of atrosols was neglected. The calculated results indicate that the effect of atmospheric aerosols on solar heating of the atmosphere is significant. If the effect of aerosols are neglected or treated as average value, it may produce significant error.