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- Title
Study on the Temporal-spatial Distribution Characteristics of Extreme Precipitation in Jiangsu Province.
- Authors
Tengfei Zheng; Xin Yu; Jianmao Guo
- Abstract
[Objectives] The research aimed to grasp the spatial and temporal distribution characteristics of extreme precipitation in Jiangsu Province. [Method] Threshold was determined by detrended fluctuation analysis (DFA) based on the data of daily precipitation over Jiangsu Province from 1961 to 2010, and the oscillation period and mutation were detected by the method of Morlet wavelet analysis and Mann-Kendall test respectively. [Result] The annual frequency of extreme precipitation in Jiangsu Province demonstrated oscillation characteristics with 8 - 10 a, and the mutation mainly happened in 2006. In addition, the oscillation period of extreme precipitation during summer was 8 - 10 a, and its mutation happened in 1998. The oscillation periods of extreme precipitation, however, during autumn were 2 -3 and 5 -7 a. Extreme precipitation and total rainfall had better consistency. They both presented the characteristics of more in the south and less in the north, and big-small-value zone was concentrated. [Conclusion] The research could provide technical support for making defense policy of the related disaster for relevant departments.
- Subjects
JIANGSU Sheng (China); METEOROLOGICAL precipitation measurement; RAINFALL frequencies; WAVELETS (Mathematics); OSCILLATIONS
- Publication
Meteorological & Environmental Research, 2013, Vol 4, Issue 8, p1
- ISSN
2152-3940
- Publication type
Article