对Ｓａｌｔｚｍａｎ模式进行了两个方面的改进试验：（１）引入气溶胶非线性参数方案并提高模式阶次；（２）在改进（１）的基础上，对Ｓａｌｔｚｍａｎ模式的云反馈机制再进行修正。定态解析解表明，改进试验（１），（２）均克服了Ｓａｌｔｚｍａｎ模式中海温二个平衡态仅相差０．００１２Ｋ这一严重缺陷。数值模拟表明，系统存在二个平衡态，而当气溶胶光学厚度增大时，两极的冰冻面积将以指数形式增大。 The Saltzman model is improved in two aspects: (1) the aerosol nonlinear parameter scheme is introduced and the mode order is increased; (2) the Saltzman model’s cloud feedback mechanism is further modified on the basis of the improvement (1) . The steady state analytic solution shows that both of the improved tests (1) and (2) overcome the serious defect that the two equilibrium states in the Saltzman model are only different by 0.0012K. Numerical simulations show that there are two equilibrium states in the system, and as the aerosol optical thickness increases, the frozen area of ​​the two poles increases exponentially.