Multi-timescale analysis of rainfall in Karst in Guizhou, China

3rd International Conference on Water Resource and Environment

地球科学;生态环境科学

Li, X.N.^1,2 ; Zhao, X.J.^1,2 ; Xu, B.^3 ; Chen, G.C.^4

Guizhou Water Conservancy and Hydroelectric Power Investigation, Design and Research Institute, Guiyang

550002, China^1

Guizhou Eng. Technol. Res. Ctr. for Exploitation and Utilization of Water Resources in Karst Region, Guiyang

550002, China^2

Water Resources Department, Yangtze River Scientific Research Institute, Wuhan

430010, China^3

Planning Bureau of Changjiang Water Resources Commission, Wuhan

430010, China^4

关键词: Annual precipitation;    Annual rainfall;    Guizhou , China;    Guizhou Province;    Karst areas;    Multi time-scale analysis;    Rainfall data;    Winter seasons;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/82/1/012051/pdf
DOI  :  10.1088/1755-1315/82/1/012051

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The rainfall data are evaluated by performing multi-timescale analysis. Weixin station was considered as a representative location for collecting rainfall data in Karst area of Guizhou Province in China. The results are as follows: (1) there is an increasing trend in annual precipitation, whereas the spring, summer, and winter seasons exhibit a positive contribution to the growth of annual rainfall; however, autumn shows a negative contribution; (2) the annual precipitation series is strongly volatile in the period extending from 2005-2016; summer and autumn show the highest volatility in recorded rainfall, whereas the change in rainfall is not that significant in spring and winter; (3) the main factor contributing to a change in rainfall is not the frequency of rainfalls, but the condition of a single rainfall in a certain time.