Investigating the Impact of Weather Conditions on Urban Heat Island Development in the Subtropical City of Hong Kong
Subtropical monsoon climates, high-density and heterogeneous urban built environments, as well as coastal–mountainous geographical environments influence the development of urban heat island (UHI) effects in Hong Kong. For better weather control of in situ observations and spatial analysis of UHI ef...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/14/2/257 |
| _version_ | 1797622444973883392 |
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| author | Yingsheng Zheng Wenjie Li Can Fang Biyin Feng Qiru Zhong Dongxu Zhang |
| author_facet | Yingsheng Zheng Wenjie Li Can Fang Biyin Feng Qiru Zhong Dongxu Zhang |
| author_sort | Yingsheng Zheng |
| collection | DOAJ |
| description | Subtropical monsoon climates, high-density and heterogeneous urban built environments, as well as coastal–mountainous geographical environments influence the development of urban heat island (UHI) effects in Hong Kong. For better weather control of in situ observations and spatial analysis of UHI effects, it is necessary to quantitatively understand the influence of weather conditions on UHI development in Hong Kong and establish weather-based UHI estimation models. Meteorological records of four urban stations, one rural reference station, and one wind reference station at an hourly interval during the period of 2002–2012 were collected from Hong Kong observatory. A frequency analysis of the mean values of multiple meteorological elements and UHI parameters in urban stations was conducted to examine the prevailing and critical weather conditions, as well as the associated UHI conditions in Hong Kong. Multiple Linear Regression (MLR) was used to estimate the daily maximum UHI intensity (UHI<sub>max</sub>) based on a set of meteorological elements including cloud amount, wind speed, wind direction, relative humidity, and air temperature, as well as a UHI parameter of the daily maximum UHI intensity of the previous day (UHI<sub>pre-max</sub>). The results showed that MLR-based models can explain 33% and 56% variations of the UHI<sub>max</sub> in the summer and the whole year, respectively. The relative importance of each meteorological element on UHI development differed in the summer and annual periods, and the UHI<sub>max</sub> tended to be intensified under high temperature conditions in the summer. |
| first_indexed | 2024-03-11T09:11:25Z |
| format | Article |
| id | doaj.art-d8bdcab003104a609308a4666f101a7f |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-11T09:11:25Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-d8bdcab003104a609308a4666f101a7f2023-11-16T19:02:17ZengMDPI AGAtmosphere2073-44332023-01-0114225710.3390/atmos14020257Investigating the Impact of Weather Conditions on Urban Heat Island Development in the Subtropical City of Hong KongYingsheng Zheng0Wenjie Li1Can Fang2Biyin Feng3Qiru Zhong4Dongxu Zhang5College of Architecture and Urban Planning, Guangzhou University, Guangzhou 510006, ChinaCollege of Architecture and Urban Planning, Guangzhou University, Guangzhou 510006, ChinaCollege of Architecture and Urban Planning, Guangzhou University, Guangzhou 510006, ChinaCollege of Architecture and Urban Planning, Guangzhou University, Guangzhou 510006, ChinaCollege of Architecture and Urban Planning, Guangzhou University, Guangzhou 510006, ChinaCollege of Architecture and Urban Planning, Guangzhou University, Guangzhou 510006, ChinaSubtropical monsoon climates, high-density and heterogeneous urban built environments, as well as coastal–mountainous geographical environments influence the development of urban heat island (UHI) effects in Hong Kong. For better weather control of in situ observations and spatial analysis of UHI effects, it is necessary to quantitatively understand the influence of weather conditions on UHI development in Hong Kong and establish weather-based UHI estimation models. Meteorological records of four urban stations, one rural reference station, and one wind reference station at an hourly interval during the period of 2002–2012 were collected from Hong Kong observatory. A frequency analysis of the mean values of multiple meteorological elements and UHI parameters in urban stations was conducted to examine the prevailing and critical weather conditions, as well as the associated UHI conditions in Hong Kong. Multiple Linear Regression (MLR) was used to estimate the daily maximum UHI intensity (UHI<sub>max</sub>) based on a set of meteorological elements including cloud amount, wind speed, wind direction, relative humidity, and air temperature, as well as a UHI parameter of the daily maximum UHI intensity of the previous day (UHI<sub>pre-max</sub>). The results showed that MLR-based models can explain 33% and 56% variations of the UHI<sub>max</sub> in the summer and the whole year, respectively. The relative importance of each meteorological element on UHI development differed in the summer and annual periods, and the UHI<sub>max</sub> tended to be intensified under high temperature conditions in the summer.https://www.mdpi.com/2073-4433/14/2/257urban heat islandsubtropical climatemeteorological elementsfrequency distributionmultiple linear regression |
| spellingShingle | Yingsheng Zheng Wenjie Li Can Fang Biyin Feng Qiru Zhong Dongxu Zhang Investigating the Impact of Weather Conditions on Urban Heat Island Development in the Subtropical City of Hong Kong Atmosphere urban heat island subtropical climate meteorological elements frequency distribution multiple linear regression |
| title | Investigating the Impact of Weather Conditions on Urban Heat Island Development in the Subtropical City of Hong Kong |
| title_full | Investigating the Impact of Weather Conditions on Urban Heat Island Development in the Subtropical City of Hong Kong |
| title_fullStr | Investigating the Impact of Weather Conditions on Urban Heat Island Development in the Subtropical City of Hong Kong |
| title_full_unstemmed | Investigating the Impact of Weather Conditions on Urban Heat Island Development in the Subtropical City of Hong Kong |
| title_short | Investigating the Impact of Weather Conditions on Urban Heat Island Development in the Subtropical City of Hong Kong |
| title_sort | investigating the impact of weather conditions on urban heat island development in the subtropical city of hong kong |
| topic | urban heat island subtropical climate meteorological elements frequency distribution multiple linear regression |
| url | https://www.mdpi.com/2073-4433/14/2/257 |
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