安徽农业科学2017，Vol.45Issue(23)：179-181,3.
西太平洋副高的年际变化及其对我国东部夏季降水的影响
Interannual Variability of the Western Pacific Subtropical High and Its Impact on Summer Precipitation in Eastern China
摘要
Abstract
Using the Western Pacific subtropical high index supplied by the National Climate Center,the monthly precipitation of the eastern China 108 stations and the monthly average height field grid data of NCEP/NCAR reanalysis in same period,the interannual variability of the 500 hPa west Pacific subtropical high was analyzed and the effect of 500 hPa west Pacific subtropical high on the precipitation in eastern China was analyzed by SVD method.The results showed that the area index and intensity index of the 500 hPa west Pacific subtropical high had quasi -2-year cycles.The interannual variation of the subtropical high had a significant effect on the spatial distribution of precipitation in eastern China.The first contribution to the spatial distribution of the variance was 56％.It could be seen that the north elevation of the subtropical high was the main reason for fluctuation change of the summer precipitation in eastern China.关键词
西太平洋副高/夏季降水/年际变化/500 hPa高度场/SVD分析Key words
West Pacific subtropical high/Summer precipitation/Interannual variation/500 hPa height field/SVD analysis分类
农业科技引用本文复制引用
曹云飞,杨明..西太平洋副高的年际变化及其对我国东部夏季降水的影响[J].安徽农业科学,2017,45(23):179-181,3.
