关键词: 平衡态, 气溶胶, 反照率, 气候反馈

Abstract: In this paper, the increment in atmospheric absorption coefficient is assumed to be a linear function of the increment in clear sky albedo due to the aerosols. A sensitive parameter is introduced for representing the linear proportional coefficient associated with the distribution, the physical and chemical properties of the aerosols. The influence of cloudy amount on the radiation transfer and nonlinear interaction among the various climatic feedback are also included in the zero dimensional radiation energy climate model. For studying the playing role of atmospheric aerosols in the climatic change, the dependence of model equilibrium on the model parameters is investigated. The calculation results show that if the aerosol content increases, (1) the atmospheric temperature will increase, while the sensible and latent heat flux will decrease. So the global drought will appear; (2) the variation of in surface temperature associates with the clear sky albedo and the aerosol property (spetral distribution, physical characteristics, optical depth and so on). An increase of the mechanism of surface feedback would strengthen the climatic effects due to atmospheric aerosols.

Key words: equilibrium, atmospheric aerosols, albedo, climatic feedback