Increasing Compound Heat and Precipitation Extremes Elevated by Urbanization in South China
Compared with individual events, compound weather and climate extremes may impose more serious influences on natural systems and human society, especially in populated areas. In this study, we examine the changes in the compound precipitation events that follow extremely hot weather within several d...
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doaj-654046cee0414cadad002f0481b2b8d42021-06-16T04:35:09ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632021-06-01910.3389/feart.2021.636777636777Increasing Compound Heat and Precipitation Extremes Elevated by Urbanization in South ChinaSijia Wu0Ting On Chan1Wei Zhang2Guicai Ning3Peng Wang4Xuelin Tong5Feng Xu6Hao Tian7Yu Han8Yongquan Zhao9Ming Luo10Ming Luo11School of Geography and Planning, and Guangdong Key Laboratory for Urbanization and Geo-simulation, Sun Yat-sen University, Guangzhou, ChinaSchool of Geography and Planning, and Guangdong Key Laboratory for Urbanization and Geo-simulation, Sun Yat-sen University, Guangzhou, ChinaIIHR-Hydroscience and Engineering, The University of Iowa, Iowa City, IA, United StatesInstitute of Environment, Energy and Sustainability, The Chinese University of Hong Kong, Sha Tin, ChinaSchool of Geography and Planning, and Guangdong Key Laboratory for Urbanization and Geo-simulation, Sun Yat-sen University, Guangzhou, ChinaSchool of Geography and Planning, and Guangdong Key Laboratory for Urbanization and Geo-simulation, Sun Yat-sen University, Guangzhou, ChinaSchool of Geography and Planning, and Guangdong Key Laboratory for Urbanization and Geo-simulation, Sun Yat-sen University, Guangzhou, ChinaSchool of Geography and Planning, and Guangdong Key Laboratory for Urbanization and Geo-simulation, Sun Yat-sen University, Guangzhou, ChinaSchool of Geography and Planning, and Guangdong Key Laboratory for Urbanization and Geo-simulation, Sun Yat-sen University, Guangzhou, ChinaDepartment of Geography, The Ohio State University, Columbus, OH, United StatesSchool of Geography and Planning, and Guangdong Key Laboratory for Urbanization and Geo-simulation, Sun Yat-sen University, Guangzhou, ChinaInstitute of Environment, Energy and Sustainability, The Chinese University of Hong Kong, Sha Tin, ChinaCompared with individual events, compound weather and climate extremes may impose more serious influences on natural systems and human society, especially in populated areas. In this study, we examine the changes in the compound precipitation events that follow extremely hot weather within several days during 1961–2017 in South China by taking the Guangdong Province as an example. Additionally, we assess the impacts of urbanization on these changes. It is found that extreme precipitation events in Guangdong are often preceded by hot weather, with an average fraction of 28.25%. The fraction of such compound events is even larger in more populated and urbanized areas such as the Pearl River Delta (PRD) region. Moreover, our results reveal significant increases in the frequency and fraction of the compound extreme heat and precipitation events. These increases are especially stronger in more developed areas (e.g., PRD), and their increasing trends tend to accelerate in recent decades. Furthermore, the local urbanization contributes to 40.91 and 49.38% of the increases in the frequency and fraction of the compound events, respectively. Our findings provide scientific references for policy-makers and urban planners to mitigate the influences of the compound heat and precipitation extremes by considering their increasing risks under the context of global climate change and local urbanization.https://www.frontiersin.org/articles/10.3389/feart.2021.636777/fullcompound eventsextreme precipitationheatwaveurbanization effectslong-term trendclimate change |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sijia Wu Ting On Chan Wei Zhang Guicai Ning Peng Wang Xuelin Tong Feng Xu Hao Tian Yu Han Yongquan Zhao Ming Luo Ming Luo |
spellingShingle |
Sijia Wu Ting On Chan Wei Zhang Guicai Ning Peng Wang Xuelin Tong Feng Xu Hao Tian Yu Han Yongquan Zhao Ming Luo Ming Luo Increasing Compound Heat and Precipitation Extremes Elevated by Urbanization in South China Frontiers in Earth Science compound events extreme precipitation heatwave urbanization effects long-term trend climate change |
author_facet |
Sijia Wu Ting On Chan Wei Zhang Guicai Ning Peng Wang Xuelin Tong Feng Xu Hao Tian Yu Han Yongquan Zhao Ming Luo Ming Luo |
author_sort |
Sijia Wu |
title |
Increasing Compound Heat and Precipitation Extremes Elevated by Urbanization in South China |
title_short |
Increasing Compound Heat and Precipitation Extremes Elevated by Urbanization in South China |
title_full |
Increasing Compound Heat and Precipitation Extremes Elevated by Urbanization in South China |
title_fullStr |
Increasing Compound Heat and Precipitation Extremes Elevated by Urbanization in South China |
title_full_unstemmed |
Increasing Compound Heat and Precipitation Extremes Elevated by Urbanization in South China |
title_sort |
increasing compound heat and precipitation extremes elevated by urbanization in south china |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Earth Science |
issn |
2296-6463 |
publishDate |
2021-06-01 |
description |
Compared with individual events, compound weather and climate extremes may impose more serious influences on natural systems and human society, especially in populated areas. In this study, we examine the changes in the compound precipitation events that follow extremely hot weather within several days during 1961–2017 in South China by taking the Guangdong Province as an example. Additionally, we assess the impacts of urbanization on these changes. It is found that extreme precipitation events in Guangdong are often preceded by hot weather, with an average fraction of 28.25%. The fraction of such compound events is even larger in more populated and urbanized areas such as the Pearl River Delta (PRD) region. Moreover, our results reveal significant increases in the frequency and fraction of the compound extreme heat and precipitation events. These increases are especially stronger in more developed areas (e.g., PRD), and their increasing trends tend to accelerate in recent decades. Furthermore, the local urbanization contributes to 40.91 and 49.38% of the increases in the frequency and fraction of the compound events, respectively. Our findings provide scientific references for policy-makers and urban planners to mitigate the influences of the compound heat and precipitation extremes by considering their increasing risks under the context of global climate change and local urbanization. |
topic |
compound events extreme precipitation heatwave urbanization effects long-term trend climate change |
url |
https://www.frontiersin.org/articles/10.3389/feart.2021.636777/full |
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