[1]ZHANG Yuqing,CHEN Changchun,YAO Xin,et al.Spatiotemporal Characteristics of Extreme Precipitation Variations in Xinjiang Basin, Jiangxi Province[J].Research of Soil and Water Conservation,2015,22(04):189-194,200.
Copy
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 04
Page number:
189-194,200
Column:
Public date:
2015-08-28
- Title:
-
Spatiotemporal Characteristics of Extreme Precipitation Variations in Xinjiang Basin, Jiangxi Province
- Author(s):
-
ZHANG Yuqing1, CHEN Changchun2, YAO Xin2, LI Yanping2
-
1. Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, China;
2. School of Geography and Remote Sensing, Nanjing University of Information Science & Technology, Nanjing 210044, China
-
- Keywords:
-
Xinjiang basin; Extreme precipitation; RClimDex; EEMD
- CLC:
-
P333.1
- DOI:
-
-
- Abstract:
-
Under the background of global climate change, extreme precipitation events have been happening, which caused a serious influence and damage to human living. Spatiotemporal distributions of extreme precipitation indices were quantitatively analyzed using ClimDex model and ensemble empirical mode decomposition (EEMD) based on the data of daily precipitation in Xinjiang basin, Jiangxi Province from 1960 to 2005. The results showed that all kinds of extreme precipitation indices presented an upward trend at different degrees, especially for extreme precipitation (R95P). The IMFs of extreme precipitation indices showed the quasi-periods of 2.56~2.88 years, 5.11~6.57 years, 9.20~11.50 years, 22.59~36.48 years, and the largest contribution belongs to IMF1 variance, the IMF3 oscillation period was more significant. A comparison of three extreme typical precipitation event years for five-day extreme precipitation (RX5day) and extreme precipitation (R95P) revealed a slightly higher ‘values’ in the central basin than the surrounding areas, and the two indices were higher in the extremely rainy years than in normal and extremely dry years, extreme precipitation events in extremely rainy years had a relative high occurrence frequency in the central basin.