气候变化领域集成服务门户(CCPortal): Characteristics of Propagation From Meteorological Drought to Hydrological Drought in the Pearl River Basin

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DOI	10.1029/2020JD033959
	Characteristics of Propagation From Meteorological Drought to Hydrological Drought in the Pearl River Basin
	Zhou Z.; Shi H.; Fu Q.; Ding Y.; Li T.; Wang Y.; Liu S.
发表日期	2021
ISSN	2169897X
卷号	126 期号:4
英文摘要	Drought events occur more frequently under recent climate change. Generally, meteorological drought is the fuse of hydrological drought; thus, it is important to understand the characteristics of meteorological drought and its propagation to hydrological drought for early warning. Taking the Pearl River Basin (PRB) in China as study area, this study adopted K-means cluster analysis method to divide the PRB into subregions with similar precipitation characteristics. Then, standardized precipitation index and standardized runoff index were used to analyze the characteristics of meteorological drought and hydrological drought, respectively, and the maximum Pearson correlation coefficient was used to determine the drought propagation time (DPT) between these two types of drought. Moreover, the link between meteorological drought and hydrological drought was explored based on continuous wavelet transform and cross wavelet transform. The results revealed that: the PRB has experienced severe meteorological and hydrological droughts since early 2000s, and hydrological drought was more serious than meteorological drought in each of the five subregions in the PRB. The DPTs from meteorological drought to hydrological drought were mainly 2–6 months, and the periodic characteristics of meteorological drought were mainly responsible for those of hydrological drought. Precipitation and runoff could greatly affect the DPT, while the impacts of evapotranspiration and shallow soil moisture on the DPT were not significant. Furthermore, El-Niño Southern Oscillation and Pacific Decadal Oscillation are important factors that affect the DPT from meteorological to hydrological drought in the PRB. © 2021. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185491
作者单位	School of Environmental Science and Engineering, State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen, Guangdong, China; School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen, Guangdong, China; School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, China; College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, China
推荐引用方式 GB/T 7714	Zhou Z.,Shi H.,Fu Q.,et al. Characteristics of Propagation From Meteorological Drought to Hydrological Drought in the Pearl River Basin[J],2021,126(4).
APA	Zhou Z..,Shi H..,Fu Q..,Ding Y..,Li T..,...&Liu S..(2021).Characteristics of Propagation From Meteorological Drought to Hydrological Drought in the Pearl River Basin.Journal of Geophysical Research: Atmospheres,126(4).
MLA	Zhou Z.,et al."Characteristics of Propagation From Meteorological Drought to Hydrological Drought in the Pearl River Basin".Journal of Geophysical Research: Atmospheres 126.4(2021).