Statistics of the general circulation from cumulant expansions.
Statistics of the general circulation from cumulant expansions.
复制标题
累积膨胀的总流通统计。
作者：
J. Marston
大尺度大气流的非线性程度可能不会高到不能用累积量的系统展开式来进行统计描述。我通过研究两层斜压模式的大气环流扩展以前的工作。累积展开的不动点描述了非平衡模型的统计稳定状态。这样得到的时间统计数据与直接数值模拟积累的数据吻合得很好。
Large-scale atmospheric flows may not be so nonlinear as to preclude their statistical description by systematic expansions in cumulants. I extend previous work by examining a two-layer baroclinic model of the general circulation. The fixed point of the cumulant expansion describes the statistically steady state of the out-of-equilibrium model. Equal-time statistics so obtained agree well with those accumulated by direct numerical simulation.