南京信息工程大学学报2019，Vol.11Issue(1)：101-109,9.DOI:10.13878/j.cnki.jnuist.2019.01.017
安徽省近60年雨日、降水量及雨强的气候变化特征
Climatic variations of wet days, precipitation and rain intensity in Anhui province during the last 60 years
摘要
Abstract
Based on the precipitation data of 15 observational stations during the last 60 years in Anhui province, the spatial & temporal features of annual and seasonal changes for wet days, rainfall and rain intensity were studied.The spatial distribution shows that wet days and rainfall are more in southern than in northern area; the rain intensity is almost equal in middle and northern areas, but less than that in southern area.As for the seasonal change, the precipitation is the most in summer and the least in winter in all areas; the wet days differ obviously between south and north in spring and winter, and the difference of rain intensity is large between south and north in spring.Wet days, rainfall and rain intensity show a significantly positive correlation between each other on both annual and seasonal levels. The temporal variation shows that wet days has declined, while precipitation and rain intensity have increased, and the characteristics can be divided into two stages.The wavelet analysis shows that wet days exists inter-decadal periodic (about 10 a), precipitation declines while rain intensity is not pronounced.Quasi-periodicities of5 a and 3 a exist during the 60 a period.Wet days have declined significantly in spring and autumn.Precipitation has roughly declined in spring and autumn, and increased in summer and winter.Rain intensity has increased significantly, especially in summer and winter.On both annual and seasonal levels, precipitation has significant positive correlations with wet days and rain intensity, which is stronger than the correlation between wet days and rain intensity.关键词
雨日/降水量/雨强/安徽省/周期Key words
wet days/precipitation/rain intensity/Anhui province/period分类
天文与地球科学引用本文复制引用
王涛,刘承晓..安徽省近60年雨日、降水量及雨强的气候变化特征[J].南京信息工程大学学报,2019,11(1):101-109,9.基金项目
江苏省气象局北极阁开放研究基金 (BJG201501) （BJG201501）
