摘要
1、梅雨期中期降水活动 1980年长江中下游地区梅雨期为6月9日—8月31日,我们用汉口,安庆、南京、上海四个站6月9日—8月31日逐日平均降水量,表示长江中下游地区梅雨期降水概况如图1所示。由图1可见,梅雨期降水存在一些降水较多集中日期和降水较少或无雨集中日期,这是降水中期活动的表现。例如,6月23—30日即为一次降水中期活动,23—26日降水量较大。
In this paper, the precipitation in the Middle and Lower Reaches of the Yangtze River during, Meiyu, period and its mddium-range dctivity was analysed by dia-gnostis method. The resuets show that the total precipitation in the regions is composed of some medium-range processes, the physical quantities and the circulation characteristics during each process has evident differences. It is Pointed out precipitation was resulted from the medium-range oscieeation of the East Asia Subtropical summer monsoon system and the interaction with the tropical monsoon.
出处
《气象科学》
CSCD
北大核心
1991年第4期444-449,共6页
Journal of the Meteorological Sciences
