【摘要】 本文用１９５１－１９９６年资料，研究了我国淮河流域夏季降水的前期大气环流及北半球海平面气压场的异常特征。结果表明，秋季中国南海地区、冬季１月份白令海地区的海平面气压中有预报我国淮河流域夏季雨型的强信号。前者有很长的预时效，并且与ＥＬ Ｎｉｎｏ事件有关。用１９５１－１９９５年的４５年资料建立的二因子回归预报模型的复相关系数可达到０．６６。更多还原

【Abstract】 The anomalous characteristics of the atmospheric circulation are analyzed in the preceding autumn and winter months for summer rainfall over Huaihe River valley in China during the period of 1951-1996. The results show that strong signals predicting fol- lowing summer rainfall over Huaihe River valley in China exist in the Sea Level Pressure in January over the region of Bailin sea and South China Sea in autumn. The latter has long pe- riod of validity and correlation with the EL Nino events. The regression model based on 45 years data (1951-1995) with the two parameters has a multiple correlation coefficient of 0. 66.更多还原