用零维能量平衡气候模型分析大气气溶胶的气候效应

The Climatic Effects Due to Atmospheric Aerosols in Zero dimensional Energy Balance Climate Model

将大气短波吸收系数的增加量假设为晴空大气反照率的增加量的线性函数，综合考虑云对能量传输的调节及其与地气系统之间复杂的非线性相互作用，利用零维能量平衡模型分析了气溶胶的气候效应。分析计算结果发现，大气气溶胶含量增加可能引发的气候变化主要是（１）大气温度升高，地表感热输送和蒸发潜热减少，这会引起全球干旱；（２）气溶胶使地面升温还是降温，主要依赖于大气对太阳辐射的吸收能力和晴空大气的反照率，地表反照率反馈机制使气溶胶的气候效应得到加强。

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 (spectral 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.