摘要
采用JEOF等方法分析中国东部夏季降水和气温的协同变化时空分布特征,结果表明:当时间系数为正时,第1典型场降水型态从北向南(下同)呈"++-"分布,气温表现为冷异常,500 hPa回归场在中纬度地区呈显著低压异常,SST回归场表现为太平洋海域呈西北-东南的分布;第2典型场降水呈"+-"分布,气温则呈"-+"分布;第3典型场降水分布呈中间型,气温场呈"-+"分布。
Using the method of JEOF, this work studies the characteristics of spatiotemporal distribution of concurrent variation of summer precipitation and temperature in eastern China. The result is shown as follows. When the time coefficient is positive, the pattern of precipitation for the first typical field shows a "++-" distribution from north to south(same below) and the temperature is of cold anomaly. A regression field at 500 hPa shows a significant low-pressure anomaly in the mid-latitude area and an SST regression field shows a northwest-southeast distribution over the area of the Pacific. The precipitation for the second typical field shows a "+-" distribution and the temperature a "-+" distribution. The precipitation for the third typical field shows a distribution in between and the temperature a "-+" distribution.
作者
郑金新
黎洛丝
郑嘉雯
郑菲菲
ZHENG Jin-xin;LI Luo-si;ZHENG Jia-wen;ZHENG Fei-fei(Meteorological Bureau of Heyuan City,Heyuan 517000;School of Atmospheric Sciences, Chengdu University of Information Technology,Chengdu 610225)
出处
《广东气象》
2019年第2期9-14,共6页
Guangdong Meteorology
关键词
气候学
降水
气温
联合EOF
回归分析
中国东部
climatology
precipitation
temperature
joint EOF
regression analysis
eastern China