摘要
采用EOF、REOF展开、Mann-Kendall突变分析等方法,利用我国东部地区1951—2008年夏季(6—8月)气温观测资料,分析了该区夏季气温的时间空间分布特征。结果表明:①我国东部地区夏季气温可分为全区一致型、南北反向型、正—负—正型3类主要空间特征场;②该区夏季气温场分为7个区,分别为华北地区、江淮地区、东南地区、华南地区、西南地区、西北地区、东北地区;③我国东部全区夏季气温呈现先下降后上升的趋势;④整个东部地区夏季气温在1997年发生突变,气温上升;在各个分区中也都存在着不同年份的突变。
Using the summer （June to August） temperature data from 1951 to 2008, the temporal and spatial distribution features are studied by applying the methods of EOF, REOF, Mann-Kendall trend test, etc. The results show that： （1） the eastern region of China in summer can be divided into three main types of spatial characteristic fields： uniform type, reverse north-south type, positive-negative-positive type. （2） The summer mean temperature field can be divided into seven major regions： North China, Jianghuai region, Southeast China, South China, Southwest China, Northwest China, Northeast China. （3） Summer temperature in the eastern region of China showed an increasing trend after the first drop. （4） Summer temperature in the entire eastern region had a sudden change in 1997, with the temperature going up, and there were sudden changes in different years in each subregions.
出处
《气象科技》
北大核心
2010年第5期537-542,共6页
Meteorological Science and Technology
