气候变化领域集成服务门户(CCPortal): Drought and flood characterization and connection to climate variability in the pearl river basin in southern china using long-term grace and reanalysis data

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DOI	10.1175/JCLI-D-20-0332.1
	Drought and flood characterization and connection to climate variability in the pearl river basin in southern china using long-term grace and reanalysis data
	HUANG Z.; JIAO J.J.; LUO X.; PAN Y.; JIN T.
发表日期	2021
ISSN	08948755
起始页码	2053
结束页码	2078
卷号	34 期号:6
英文摘要	Drought and flood are investigated in the Pearl River basin (PRB) using long-term terrestrial water storage anomaly (TWSA) data from the mascon (mass concentration) solutions based on Gravity Recovery and Climate Experiment (GRACE) satellite measurements (2002-19) and reanalysis data (1980-2019). The GRACE mascon solutions capture two major drought periods (2003-06 and 2009-12) with similar onsets and endings over the last two decades, but show considerable differences in quantifying total drought severity. The reanalysis data significantly overestimate drought duration and severity during 1980-2000 owing to overestimated negative TWSA forced by underestimated precipitation. The GRACE mascon solutions identify four major flood events in August 2002, June 2008, and July in 2006 and 2019. The flood potential is influenced by the precipitation in both the current and antecedent months. The flood potential index of the most recent flood in 2008 showed a similar spatial pattern compared to precipitation at monthly and subbasin scales. The precipitation and TWSA in the PRB are mainly influenced by El Niño-Southern Oscillation (ENSO). TWSA exhibits a lag of 1-3 months responding to ENSO during 1980-2019. This study emphasizes the significance of removing water storage changes in new large reservoirs before long-term drought and flood characterization. The inclusion of reservoir water storage would expand (shrink) the drought duration and overestimate (underestimate) drought severity for the period before (after) reservoir impoundment and overestimate flood potential for the period after reservoir impoundment. This study highlights the intensifying drought conditions in the PRB over the last four decades under the circumstances of more frequent human activities (reservoir construction and regulation) and the complex changing climate system. © 2021 American Meteorological Society. All rights reserved.
英文关键词	Drought; ENSO; Flood events; Pacific decadal oscillation; Reanalysis data; Remote sensing
语种	英语
scopus关键词	Atmospheric pressure; Climatology; Digital storage; Drought; Floods; Geodetic satellites; Gravitation; Hydroelectric power plants; Watersheds; Climate variability; Drought conditions; Gravity recovery and climate experiment satellites; Mass concentration; Pearl River basin; Reservoir constructions; Southern oscillation; Terrestrial water storage; Reservoirs (water); climate change; drought; El Nino-Southern Oscillation; flooding; GRACE; Pacific Decadal Oscillation; remote sensing; satellite data; satellite imagery; China; Guangdong; Zhujiang Basin
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178677
作者单位	Department of Earth Sciences, The University of Hong Kong, Hong Kong, Hong Kong; The University of Hong Kong-Shenzhen Research Institute, Shenzhen, China; The University of Hong Kong-Zhejiang Institute of Research and Innovation, Hangzhou, China; Beijing Laboratory of Water Resources Security, Capital Normal University, Beijing, China; College of Resource Environment and Tourism, Capital Normal University, Beijing, China; School of Geodesy and Geomatics, Wuhan University, Wuhan, China
推荐引用方式 GB/T 7714	HUANG Z.,JIAO J.J.,LUO X.,et al. Drought and flood characterization and connection to climate variability in the pearl river basin in southern china using long-term grace and reanalysis data[J],2021,34(6).
APA	HUANG Z.,JIAO J.J.,LUO X.,PAN Y.,&JIN T..(2021).Drought and flood characterization and connection to climate variability in the pearl river basin in southern china using long-term grace and reanalysis data.Journal of Climate,34(6).
MLA	HUANG Z.,et al."Drought and flood characterization and connection to climate variability in the pearl river basin in southern china using long-term grace and reanalysis data".Journal of Climate 34.6(2021).