Influence of urbanization on hourly extreme precipitation over China
The impact of rapid urbanization on the spatiotemporal pattern of short-term extreme precipitation in China remains unclear at the subnational scale. In this study, we present a general framework that measures urbanization-induced variation in hourly extreme wet season precipitation (April–October)...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2022-01-01
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| Series: | Environmental Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1748-9326/ac59a6 |
| _version_ | 1797747006070849536 |
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| author | Xiaowen Huang Dashan Wang Alan D Ziegler Xiaoping Liu Hui Zeng Zhibo Xu Zhenzhong Zeng |
| author_facet | Xiaowen Huang Dashan Wang Alan D Ziegler Xiaoping Liu Hui Zeng Zhibo Xu Zhenzhong Zeng |
| author_sort | Xiaowen Huang |
| collection | DOAJ |
| description | The impact of rapid urbanization on the spatiotemporal pattern of short-term extreme precipitation in China remains unclear at the subnational scale. In this study, we present a general framework that measures urbanization-induced variation in hourly extreme wet season precipitation (April–October) from 1985 to 2012, with reference to a dynamic urban–rural station classification based on annual changes in urban extent. We found that urbanization in south China (<29° N) brings more extreme precipitation to urban areas than to suburbs, and reduces extreme precipitation continually over urban areas in parts of the north and northeast. Over 60% of provincial capital cities show significant changes in extreme precipitation due to urbanization, including smaller size cities separated from large urban clusters. Urbanization enhances extreme precipitation mainly in the local main part of the rainy season, which refers to May in the south (e.g. urban–rural differences of 0.70 mm h ^−1 in Guangzhou) and July–September in the central and north (1.16 mm h ^−1 in August of Beijing). Urbanization also increases hourly extreme precipitation at peak times in diurnal cycles. The results indicate that urbanization has caused overall more and more heterogeneous spatial patterns over China and concentrated distributions during the rainy season and peak time. These patterns warrant attention when assessing the risk of increased waterlogging and flash flooding in urban areas. |
| first_indexed | 2024-03-12T15:45:55Z |
| format | Article |
| id | doaj.art-49624e8602b847b68288927aeea2b772 |
| institution | Directory Open Access Journal |
| issn | 1748-9326 |
| language | English |
| last_indexed | 2024-03-12T15:45:55Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Letters |
| spelling | doaj.art-49624e8602b847b68288927aeea2b7722023-08-09T15:26:43ZengIOP PublishingEnvironmental Research Letters1748-93262022-01-0117404401010.1088/1748-9326/ac59a6Influence of urbanization on hourly extreme precipitation over ChinaXiaowen Huang0https://orcid.org/0000-0002-3936-590XDashan Wang1https://orcid.org/0000-0001-9743-4806Alan D Ziegler2https://orcid.org/0000-0001-5305-2136Xiaoping Liu3https://orcid.org/0000-0003-4242-5392Hui Zeng4Zhibo Xu5Zhenzhong Zeng6https://orcid.org/0000-0001-6851-2756School of Environmental Science and Engineering, Southern University of Science and Technology , Shenzhen, People’s Republic of ChinaSchool of Environmental Science and Engineering, Southern University of Science and Technology , Shenzhen, People’s Republic of ChinaFaculty of Fisheries Technology and Aquatic Resources, Maejo University , Chiang Mai, ThailandGuangdong Key Laboratory for Urbanization and Geo-simulation, School of Geography and Planning, Sun Yat-Sen University , Guangzhou, People’s Republic of ChinaShenzhen Graduate School, Peking University , Shenzhen, People’s Republic of ChinaKey Laboratory of Urban Land Resources Monitoring and Simulation, Ministry of Natural Resources , Shenzhen, People’s Republic of ChinaSchool of Environmental Science and Engineering, Southern University of Science and Technology , Shenzhen, People’s Republic of ChinaThe impact of rapid urbanization on the spatiotemporal pattern of short-term extreme precipitation in China remains unclear at the subnational scale. In this study, we present a general framework that measures urbanization-induced variation in hourly extreme wet season precipitation (April–October) from 1985 to 2012, with reference to a dynamic urban–rural station classification based on annual changes in urban extent. We found that urbanization in south China (<29° N) brings more extreme precipitation to urban areas than to suburbs, and reduces extreme precipitation continually over urban areas in parts of the north and northeast. Over 60% of provincial capital cities show significant changes in extreme precipitation due to urbanization, including smaller size cities separated from large urban clusters. Urbanization enhances extreme precipitation mainly in the local main part of the rainy season, which refers to May in the south (e.g. urban–rural differences of 0.70 mm h ^−1 in Guangzhou) and July–September in the central and north (1.16 mm h ^−1 in August of Beijing). Urbanization also increases hourly extreme precipitation at peak times in diurnal cycles. The results indicate that urbanization has caused overall more and more heterogeneous spatial patterns over China and concentrated distributions during the rainy season and peak time. These patterns warrant attention when assessing the risk of increased waterlogging and flash flooding in urban areas.https://doi.org/10.1088/1748-9326/ac59a6urbanizationhourly extreme precipitationspatiotemporal patternurban–rural differencedynamic classification |
| spellingShingle | Xiaowen Huang Dashan Wang Alan D Ziegler Xiaoping Liu Hui Zeng Zhibo Xu Zhenzhong Zeng Influence of urbanization on hourly extreme precipitation over China Environmental Research Letters urbanization hourly extreme precipitation spatiotemporal pattern urban–rural difference dynamic classification |
| title | Influence of urbanization on hourly extreme precipitation over China |
| title_full | Influence of urbanization on hourly extreme precipitation over China |
| title_fullStr | Influence of urbanization on hourly extreme precipitation over China |
| title_full_unstemmed | Influence of urbanization on hourly extreme precipitation over China |
| title_short | Influence of urbanization on hourly extreme precipitation over China |
| title_sort | influence of urbanization on hourly extreme precipitation over china |
| topic | urbanization hourly extreme precipitation spatiotemporal pattern urban–rural difference dynamic classification |
| url | https://doi.org/10.1088/1748-9326/ac59a6 |
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