摘要
利用东北地区 19个测站的 195 1— 2 0 0 0年逐月降水、气温资料 ,采用综合的经验正交函数展开等诊断方法 ,研究了春、夏季节降水、气温异常的空间分布特征、时间变化规律以及与旱涝年份之间的关系。结果表明 ,所得到的降水、气温异常的典型配置场及其时间系数能较好地反映东北地区降水、气温异常的时空特征 ,且夏季时间系数出现极值的年份与东北地区不同区域发生较严重旱涝的年份存在很好的对应关系。
Based on 1951—2000 monthly precipitation and temprature data of 19 stations in Northeast China,the spatial and temporal features of anomalous rainfall and temperature in summer and spring are discussed together with their relationship to flood and drought.It is found that the typical coupling patterns between rainfall and temperature and the corresponding time coefficients present the spatial and temporal characteristics of rainfall and temperature anomalies very well.A good correspondence between the years appearing the extremum of time coefficients in summer and the severe flood and drought years is also detected.
出处
《南京气象学院学报》
CSCD
北大核心
2003年第3期349-357,共9页
Journal of Nanjing Institute of Meteorology
基金
国家自然科学基金项目 ( 40 2 750 16 )
关键词
东北地区
夏季降水
气温异常
时空分布特征
旱涝
Northeast China
precipitation
temperature
spatial and temporal distribution
drought or flood
