海冰-海温非线性耦合系统的研究

STUDY ON THE NONLINEAR COUPLED SYSTEM OF ICEBOUNDARY AND SEA TEMPERATURE

摘要: 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。

Abstract: Two plans of parameter areint roduced to the Salt zman's Model to inprove its proper ties. One is aero sol parameter and the other is cloud. The solutions show that both plans overco methe sortcoming of Saltzman's Model which the difference between its two stead states is only 0.0012 K. The numerical experiment shows that there exists two equilibrium states, and the icecover will incress in an exponential form with the incressing of aerosol.