摘要
首先利用1951—1999年资料,研究了我国秋季(9—11月)降水、温度的时空特征,找出我国秋雨明显的地区,然后划分秋季的旱涝年及秋季气温的冷暖年,并研究旱涝、冷暖年的气候变化特征,最后利用500hPa位势高度资料分析了我国及长江中下游地区秋季气候异常的大尺度环流背景及气候变化的成因。
Spatialtemporal distributive features of autumn (SeptemberNovember) precipitation and temperature in China is analyzed in this paper in the context of 1951-1999 data,the high autumn precipitation regions are found,and then dry/wet autumns and warm/cold autumns are determined and climatic change features of dry/wet years and warm/cold years are investigated.At last,the largescale general circulation background responsible for the autumn climatic anomaly in China,especially in the middlelower reaches of the Yangtze River are studied using the 500hPa geopotential height data.
出处
《南京气象学院学报》
CSCD
北大核心
2003年第5期622-630,共9页
Journal of Nanjing Institute of Meteorology
基金
国家自然科学基金资助项目(40275028)
