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Advances in Meteorology
Volume 2016 (2016), Article ID 2564586, 11 pages
http://dx.doi.org/10.1155/2016/2564586
Research Article

Detecting Variation Trends of Temperature and Precipitation for the Dadu River Basin, China

1College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, China
2State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China
3State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China

Received 29 February 2016; Revised 19 May 2016; Accepted 22 May 2016

Academic Editor: Hiroyuki Hashiguchi

Copyright © 2016 Ying Wu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This study analyzes the variation trends of temperature and precipitation in the Dadu River Basin of China based on observed records from fourteen meteorological stations. The magnitude of trends was estimated using Sen’s linear method while its statistical significance was evaluated using Mann-Kendall’s test. The results of analysis depict increase change from northwest to southeast of annual temperature and precipitation in space. In temporal scale, the annual temperature showed significant increase trend and the annual precipitation showed increase trend. For extreme indices, the trends for temperature are more consistent in the region compared to precipitation. This paper has practical meanings for an effective management of climate risk and provides a foundation for further study of hydrological situation in this river basin.