JOURNAL OF NATURAL RESOURCES ›› 2013, Vol. 28 ›› Issue (5): 786-798.doi: 10.11849/zrzyxb.2013.05.008

• Resources Evaluation • Previous Articles     Next Articles

Analysis of Correlation between the Spatio-Temporal Distribution of Precipitation in Beijiang River Basin and SST in Niño 3

LIU Zhan-ming1, CHEN Zi-shen1, LU Jian-fei2, HUANG Qiang1   

  1. 1. Department of Water Resources and Environment, Sun Yat-sen University, Guangzhou 510275, China;
    2. Guangzhou Marine Geological Survey, Guangzhou 510760, China
  • Received:2012-02-03 Revised:2012-10-15 Online:2013-05-20 Published:2013-05-20

Abstract:

The paper analyzed the precipitation spatio-temporal distribution in Beijiang River Basin of Guangdong Province based on monthly and annual data of 18 stations from 1965 to 2007. The non-parametric method of Mann-Kendall is applied, and the result shows that precipitation of the whole basin has an insignificant upward trend from 1965 to 2007. The result of the moving t-test indicates that the increasing change points of precipitation appeared in 1992 and 1993. The basin was divided into four different subareas by REOF method. The paper selected subareas of characteristic vector of the largest load site as the benchmark station, and analyzed the cycle characteristics and the relationship between the precipitation and SST in Niño 3 by the continuous wavelet transform, cross wavelet and wavelet coherence techniques. The results show that monthly precipitation of four stations have significant correlation with SST in Niño 3. The time-lag correlation analysis shows that there is the strongest correlation between monthly precipitation and SST in Niño 3 at later 3 and 4 months in Nanxiong, Fogang and Liannan stations, but Sanshui station at the same time. This difference may because that Sanshui area had the influence of human activity more intense than others.

Key words: precipitation in Beijiang River Basin, SST in Niñ, o 3, REOF, Mann-Kendall, Moving t-test, wavelet analysis 

CLC Number: 

  • P426.6