【摘要】 利用 1 95 1～ 2 0 0 2年全国 1 60个站的夏季降水量资料 ,以全国大范围多雨和少雨为基本出发点 ,利用星座法和降水距平优势概率法 ,将全国夏季降水分为全国大范围多雨型和大范围少雨型两大类。在分型的基础上 ,对大范围多雨型和大范围少雨型的环境场特点及前兆信号进行了初步分析。更多还原

【Abstract】 Using 1951-2002 rainfall observation in summer at 160 stations all over China, the research objective aimed to distinguish the wetter or dryer rainfall pattern in large scale. The two typical rainfall patterns in China were classified with the methods of the constellation and the dominant possibility of precipitation anomalous. One is wetter in most area of China and the other is dryer in most area of China. On the base of classification, the characteristic and premonitory in each type of rainfall pattern in general circulation were also analyzed.更多还原