Extremeness Comparison of Regional Drought Events in Yunnan Province, Southwest China: Based on Different Drought Characteristics and Joint Return Periods
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Published:2023-07-16
Issue:7
Volume:14
Page:1153
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ISSN:2073-4433
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Container-title:Atmosphere
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language:en
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Short-container-title:Atmosphere
Author:
Zhao Ruxin12, Yang Siquan12, Sun Hongquan12, Zhou Lei3ORCID, Li Ming14, Xing Lisong1, Tian Rong3
Affiliation:
1. National Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing 100085, China 2. Key Laboratory of Compound and Chained Natural Hazards Dynamics, Ministry of Emergency Management of China, Beijing 100085, China 3. School of Geomatics and Urban Spatial Informatics, Beijing University of Civil Engineering and Architecture, Beijing 102616, China 4. College of Geoscience and Surveying Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China
Abstract
Droughts frequently occur in Yunnan province, the southwest of China, which leads to crop loss, ecosystem degradation, and difficulties in drinking water for people. In order to assess and compare the extremeness for different drought events, this study quantified it by utilizing the joint return period of drought multi-characteristics. Three characteristics at the regional scale: drought duration, severity, and affected areas were obtained by a simple regional drought process methodology, and their relationship was considered based on three types of Archimedean Copulas. Standard Precipitation Evapotranspiration Index at a six-month time scale was selected as the optimal drought index based on actual drought impact data. Results showed that drought events in Yunnan province were mostly short drought duration, low severity, and high drought-affected areas. By comparing the historical reported droughts’ loss, the return periods of drought events calculated by the combination of duration and severity and drought-affected area are much more suitable to reflect the real drought situations than those calculated by one- or two-dimensional drought characteristics, especially for extreme drought events. On average, the drought in Yunnan province was almost shown a return period of ~10 yr. The frequency of droughts in Yunnan province has gradually increased due to climate change, and droughts with ~100 yr or even larger return periods occurred in 2009–2010 and 2011–2013.
Funder
National Key Research and Development Project
Subject
Atmospheric Science,Environmental Science (miscellaneous)
Reference53 articles.
1. Societal drought vulnerability and the Syrian climate-conflict nexus are better explained by agriculture than meteorology;Eklund;Commun. Earth Environ.,2022 2. Porter, J.R., Xie, L., Challinor, A.J., Cochrane, K., Howden, S.M., Iqbal, M.M., Lobell, D.B., and Travasso, M.I.. (2014). Climate Change 2014: Impacts, Adaptation, and Vulnerability, Cambridge University Press. 3. Accelerated dryland expansion under climate change;Huang;Nat. Clim. Chang.,2016 4. Henry, A.J. (1906). The Climatology of the United States, Weather Bureau Bulletin Q. 5. McKee, T.B., Doesken, N.J., and Kleist, J. (1993, January 17–22). The relationship of drought frequency and duration to time scales. Proceedings of the 8th Conference on Applied Climatology: American Meteorological Society, Boston, MA, USA.
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