中、低纬度海-气典型场的振荡特征

CHARACTERISTICS OF TYPICAL AIR-SEAFIELD OSCILLATION IN MIDDLE ANDLOW LATITUDES

中、低纬度海温及各层大气位势高度场EOF分量的谱分析结果表明:中、低纬海-气系统具有3～4a和准2a振荡周期。交叉谱分析还表明:海温场的分布类型不同,对大气的影响高度也不同。

The spectrum analysis of SST in middle and low latitude and EOF components of atmospheric potential height at different level shows that ocean-atmosphere system in middle and low latitude possesses a 3-4 year oscillation period and a quasibinary-year oscillation period. The cross spectrum analysis also proves that different types of SST distribution may affect different height of atmosphere.