北大西洋涛动与欧亚冬季气温

本文首先分析了北大西洋涛动的自身振动及其对欧亚地区冬季气温的影响,而后又对北大西洋涛动与500hpa西风指数变异之联系作了探讨。结果发现:北大西洋涛动存在着较显著的9年变化周期,其强弱变化对欧亚大范围冬季气温具有一定程度的影响,尤其是对大西涛动与同期和前期5月及10月特定区域500hpa西风指数关系密切。

NORTH ATLANTIC OSCILLATION AND EURASIAN WINTER TEMPERATURE

After analyzing the self-oscillating of the North Atlantic Oscillation and It's influence to the winter temperature of Eurasian Area, the relation of the North Atlantic Oscillation to the variation of the 500hpa west'wind index has been thoroughly studied in this paper. Some results have been found; There is a striking nine year cycle for the North Atlantic Oscillation and the intensity of the variation of the cycle has certain influence to the winter temperature in large area of Eurasian especially to Europe and the west Asia area. The North Atlantic Oscillation is closely related to the 500hpa west wind index of the same period,the west wind indices of the foregoing May and October in certain area may be regarded as indications too.