平均经圈环流质量流函数简化计算方案的应用

Application of a Simplified Calculation Scheme for Mean Meridional Circulation Mass Stream Function

用一个简化计算方案 ,求得了 1 948— 1 999年 52 a逐月平均经圈环流质量流函数。用它分析了平均经圈环流的气候态及 2 0世纪 80年代和 90年代最强 El Nino事件的气候异常态。结果表明 :它很好地给出了平均经圈环流的气候态的季节变化及气候异常态与 SSTA的物理联系。

A simplified scheme is used to calculate the monthly mean meridional circulation (MMC) mass stream function in 1948—1999,with which the MMC climatic state(Ψ)and the anomalous climatic state(Ψ′) during the strongest El Nino events in 1980s and 1990s are analyzed.Results show that the calculated MMC mass stream function reasonably describes the those seasonal variation of Ψ and the physical relationship between Ψ′ and SSTA.The above results are basically in accordance with those calculated by the interation method.