【摘要】 本文用1971—1990年长江下游夏季(6—8月)降水量、水温资料和北半球500hPa的逐日高度场资料,分析了长江下游夏季降水、气温与北半球大气环流的遥相关特征,结果表明长江下游夏季降水、气温与前期、同期和后期大气环流有显著的波列状的遥相关结构,同时时滞分析也表明在120°E环流圈上,长江下游夏季气温与北半球500hPa高度场的相关系数可以有规则地向极地传播。更多还原

【Abstract】 By using the data of the precipitation and temperature of summer in the lower reaches of Changjiang river and the grid data of 500hPa daily height fields in the Northern Hemisphere, the teleconnective features between the precipitation , temperature and the circulation in the Northern hemisphere are analysed. It has been found the telcconnection structure with significant wavetrain for lag and simultaneous correlation. The lagged correlations between 500hPa height fields and the summer temperature indicated that the correlation signal propagates regularly southward and northward along the longitude of 120°E.更多还原