【摘要】 分析了云南汛期6~8月雨量与前期1~5月北半球200、500、850hPa高度场和海温场(40°S～40°N,30°E～70°W)的相关关系,得到两个相关场中显著相关区的时空分布特征、尺度范围和相关场的波列结构。并进一步分析了与云南汛期雨量相关的环流系统的天气气候学意义,得到云南汛期雨量与前期高度场和海温场的遥相关关键区。分析结果表明:通过综合考虑高度场和海温场作为云南汛期雨量预报因子,使预报更具可靠的物理基础,并初步归纳出影响云南汛期雨量的物理概念模型。更多还原

【Abstract】 Spatial and temporal distribution characteristics and scale range of two significant areas were obtained by analyzing the relationship among summer rainfall in Yunnan province, height field and SST field(40 °S～40 °N, 30 °E～70 °W) across the North Hemisphere at 200 hPa, 500 hPa and 850 hPa for Jan. to May and correlation ,as well as field wave structure. Remote key regions among summer rainfall in Yunnan province, height field and SST field (40 °S～40 °N, 30 °E～70 °W) across the North Hemisphere at 200 hPa, 500 hPa and 850 hPa were studied through further analyzing the circulation system and its climate-weather significance. Result shows that forecast has dependable physical basis when height and SST fields were viewed as predictors and physical moderns about the impacting on flood season precipitation in Yunnan are preliminarily concluded.更多还原