Analysis on dry-wet characteristics in the Zhujiang River Basin in recent 55 years

3rd International Symposium on Earth Observation for Arid and Semi-Arid Environments

Qiu, Jizhong^1,2 ; Wang, Yunpeng^1 ; Xiao, Jie^1,2

Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou

510640, China^1

University of Chinese Academy of Sciences, Beijing

100049, China^2

关键词: Empirical Orthogonal Function;    Monitoring and evaluations;    Normal state;    Palmer drought severity indices;    River basins;    Wet conditions;    Zhujiang;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/74/1/012013/pdf
DOI  :  10.1088/1755-1315/74/1/012013

来源: IOP

【 摘 要 】

Based on Palmer Drought Severity Index (PDSI), this paper analysed the spatial distribution of dry-wet condition in the Zhujiang River Basin in 1961-2015, and studied the dry-wet climatic regionalization by Rotated Empirical Orthogonal Function (REOF). The results show most areas in the Zhujiang River Basin was in normal state of dry-wet condition and the whole basin can be divided into 7 dry-wet climate zones. The above conclusions reflect the dry-wet characteristics in the basin reasonably, which can provide a reference on prediction, monitoring and evaluation of some kinds of extreme climatic disasters such as floods and droughts inextricably linked with dry-wet condition.