期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：304
期号：2
页码：1-8
DOI：10.1088/1755-1315/304/2/022082
出版社：IOP Publishing
摘要：On the basis of hourly rainfall dataset from 92 meteorological stations for the 10 years (2008-2017), the spatial and temporal distribution of precipitation in Guangxi were analyzed. Results showed that high value precipitation centers were found over different districts during two time frame, 6:00-12:00 and 18:00-24:00. The rainfall over north of Guangxi mainly happened during 18:00-24:00, but over the middle of Guangxi was during 6:00-12:00. The hourly precipitation distributed unevenly on season scale. Seasonal differences in diurnal variation of rainfall were distinguished. Summer rainfall events concentrated at morning, but the events during other three seasons were more likely to happen in the evening. Using empirical orthogonal function (EOF), the first principal component displayed apparent spatial distribution, which would be helpful to classify the security of mountain flood. During the 6:00-12:00, the patterns were more typical to describe the high rainfall centers in summer. As for the other three seasons, the patterns were appropriate during 18:00-24:00.
