Typhoon Rainfall Intensification by Urban Dynamical Effects in Shanghai
Abstract Based on observational data from 17 typhoons affecting Shanghai between 2012 and 2020, this study investigates the spatial characteristics of typhoon rainfall, with a multi‐case composite analysis. The results show that storm total rainfall in the urban area is approximately 20% higher than...
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| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2025-07-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2025GL116313 |
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| _version_ | 1850039205594398720 |
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| author | Caijun Yue Changhai Liu Liping Deng Zhihui Han Xiaofeng Wang Yao Yao Wen Gu Yuqi Tang Xiangyu Ao Bingxin Ma Yiwen Lu |
| author_facet | Caijun Yue Changhai Liu Liping Deng Zhihui Han Xiaofeng Wang Yao Yao Wen Gu Yuqi Tang Xiangyu Ao Bingxin Ma Yiwen Lu |
| author_sort | Caijun Yue |
| collection | DOAJ |
| description | Abstract Based on observational data from 17 typhoons affecting Shanghai between 2012 and 2020, this study investigates the spatial characteristics of typhoon rainfall, with a multi‐case composite analysis. The results show that storm total rainfall in the urban area is approximately 20% higher than in the rural area. Moreover, the chance of storm total precipitation exceeding 100 mm in the urban area is approximately 2.7 times higher than that in the rural area. This spatial disparity underscores the impact of urban dynamical effects, where reduced local urban wind speeds contribute to a twofold difference in urban‐rural wind speeds, thereby enhancing the near‐surface convergence and rainfall in urban areas. Conversely, minimal spatial variations in thermal and moisture conditions indicate negligible influences from urban heat island and other thermodynamic factors. |
| format | Article |
| id | doaj-art-08ecc1b77755420ab2d1c80f613b9948 |
| institution | DOAJ |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-08ecc1b77755420ab2d1c80f613b99482025-08-20T02:56:24ZengWileyGeophysical Research Letters0094-82761944-80072025-07-015213n/an/a10.1029/2025GL116313Typhoon Rainfall Intensification by Urban Dynamical Effects in ShanghaiCaijun Yue0Changhai Liu1Liping Deng2Zhihui Han3Xiaofeng Wang4Yao Yao5Wen Gu6Yuqi Tang7Xiangyu Ao8Bingxin Ma9Yiwen Lu10Shanghai Marine Meteorological Center Shanghai ChinaResearch Applications Laboratory National Center for Atmospheric Research Boulder CO USALaboratory for Coastal Ocean Variation and Disaster Prediction College of Ocean and Meteorology Guangdong Ocean University Shantou ChinaShanghai Meteorological Information and Technology Support Centre Shanghai ChinaShanghai Ecological Forecasting and Remote Sensing Center Shanghai ChinaShanghai Marine Meteorological Center Shanghai ChinaShanghai Ecological Forecasting and Remote Sensing Center Shanghai ChinaShanghai Ecological Forecasting and Remote Sensing Center Shanghai ChinaShanghai Typhoon Institute China Meteorological Administration Shanghai ChinaShanghai Ecological Forecasting and Remote Sensing Center Shanghai ChinaShanghai Ecological Forecasting and Remote Sensing Center Shanghai ChinaAbstract Based on observational data from 17 typhoons affecting Shanghai between 2012 and 2020, this study investigates the spatial characteristics of typhoon rainfall, with a multi‐case composite analysis. The results show that storm total rainfall in the urban area is approximately 20% higher than in the rural area. Moreover, the chance of storm total precipitation exceeding 100 mm in the urban area is approximately 2.7 times higher than that in the rural area. This spatial disparity underscores the impact of urban dynamical effects, where reduced local urban wind speeds contribute to a twofold difference in urban‐rural wind speeds, thereby enhancing the near‐surface convergence and rainfall in urban areas. Conversely, minimal spatial variations in thermal and moisture conditions indicate negligible influences from urban heat island and other thermodynamic factors.https://doi.org/10.1029/2025GL116313dynamical effects of urbantyphoon rainfall in Shanghaiurban rainfall enhancementurban heat islandtyphoons |
| spellingShingle | Caijun Yue Changhai Liu Liping Deng Zhihui Han Xiaofeng Wang Yao Yao Wen Gu Yuqi Tang Xiangyu Ao Bingxin Ma Yiwen Lu Typhoon Rainfall Intensification by Urban Dynamical Effects in Shanghai Geophysical Research Letters dynamical effects of urban typhoon rainfall in Shanghai urban rainfall enhancement urban heat island typhoons |
| title | Typhoon Rainfall Intensification by Urban Dynamical Effects in Shanghai |
| title_full | Typhoon Rainfall Intensification by Urban Dynamical Effects in Shanghai |
| title_fullStr | Typhoon Rainfall Intensification by Urban Dynamical Effects in Shanghai |
| title_full_unstemmed | Typhoon Rainfall Intensification by Urban Dynamical Effects in Shanghai |
| title_short | Typhoon Rainfall Intensification by Urban Dynamical Effects in Shanghai |
| title_sort | typhoon rainfall intensification by urban dynamical effects in shanghai |
| topic | dynamical effects of urban typhoon rainfall in Shanghai urban rainfall enhancement urban heat island typhoons |
| url | https://doi.org/10.1029/2025GL116313 |
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