Land surface temperature and human thermal comfort responses to land use dynamics in Chittagong city of Bangladesh
Intense urbanization alters the microclimate and ecology of cities by converting naturally vegetated and permeable surfaces into impervious built-up surfaces. These artificial impermeable surfaces re-balance the surface energy budget by storing solar heat due to their higher thermal conductivity, an...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2022-12-01
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| Series: | Geomatics, Natural Hazards & Risk |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/19475705.2022.2114384 |
| _version_ | 1817998436713103360 |
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| author | H. M. Imran Anwar Hossain Mahaad Issa Shammas Mohan Kumar Das Md. Rabiul Islam Kalimur Rahman Mansour Almazroui |
| author_facet | H. M. Imran Anwar Hossain Mahaad Issa Shammas Mohan Kumar Das Md. Rabiul Islam Kalimur Rahman Mansour Almazroui |
| author_sort | H. M. Imran |
| collection | DOAJ |
| description | Intense urbanization alters the microclimate and ecology of cities by converting naturally vegetated and permeable surfaces into impervious built-up surfaces. These artificial impermeable surfaces re-balance the surface energy budget by storing solar heat due to their higher thermal conductivity, and consequently, increase the Land Surface Temperature (LST). The higher LST affects the city dwellers' Human Thermal Comfort (HTC). To address these issues, unlike most prior research, we assess not only the influence of Land Use and Land Cover (LULC) alterations on summer LST but also on winter LST in Chittagong City of Bangladesh between 1993 and 2020 by using Remote Sensing (RS) and Geographic Information Systems (GIS). Additionally, the study evaluates the impact of LULC changes on the HTC during summer as LST substantially affects HTC in summer. The LULC analysis shows an increase in built-up area by 204% from bare lands, vegetated lands, lowlands, and water bodies between 1993 and 2020. In contrast, bare lands were converted from naturally vegetated surfaces, followed by lowlands and water bodies because of anthropogenic activities. The LSTs of Chittagong city, derived from remote sensing data, show a strong upward trend, with summer (winter) ranges of 20.62–34.07 °C (7.50–27.52 °C), 22.82–37.62 °C (14.92–29.32 °C), and 22.32–43.52 °C (17.08–31.83 °C) for 1993, 2007, and 2020, respectively. Between 1993 and 2020, the spatial mean winter and summer LSTs increased by 4.04 °C and 6.45 °C, respectively, or 0.15 °C and 0.24 °C per year. Chittagong had the highest mean LST in built-up areas for all the years. In addition, the study area's HTC gradually shifted to intense heat stress. The summer LST strongly correlated with normalized difference vegetation index (NDVI), normalized difference built-up index (NDBI) and normalized difference water index (NDWI) while winter LST exhibited poor correlation with these indices. |
| first_indexed | 2024-04-14T02:53:45Z |
| format | Article |
| id | doaj.art-82d143511205439fac64992af3170e12 |
| institution | Directory Open Access Journal |
| issn | 1947-5705 1947-5713 |
| language | English |
| last_indexed | 2024-04-14T02:53:45Z |
| publishDate | 2022-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Geomatics, Natural Hazards & Risk |
| spelling | doaj.art-82d143511205439fac64992af3170e122022-12-22T02:16:12ZengTaylor & Francis GroupGeomatics, Natural Hazards & Risk1947-57051947-57132022-12-011312283231210.1080/19475705.2022.2114384Land surface temperature and human thermal comfort responses to land use dynamics in Chittagong city of BangladeshH. M. Imran0Anwar Hossain1Mahaad Issa Shammas2Mohan Kumar Das3Md. Rabiul Islam4Kalimur Rahman5Mansour Almazroui6Institute of Water and Environment, Dhaka University of Engineering & Technology, Gazipur, BangladeshInstitute of Water and Environment, Dhaka University of Engineering & Technology, Gazipur, BangladeshDepartment of Civil and Environmental Engineering, College of Engineering, Dhofar University, Salalah, Sultanate of OmanInstitute of Water and Flood Management, Bangladesh University of Engineering and Technology, Dhaka, BangladeshInstitute of Water and Environment, Dhaka University of Engineering & Technology, Gazipur, BangladeshThe City College of New York, New York, NY, USACentre of Excellence for Climate Change Research/Department of Meteorology, King Abdulaziz University, Jeddah, Saudi ArabiaIntense urbanization alters the microclimate and ecology of cities by converting naturally vegetated and permeable surfaces into impervious built-up surfaces. These artificial impermeable surfaces re-balance the surface energy budget by storing solar heat due to their higher thermal conductivity, and consequently, increase the Land Surface Temperature (LST). The higher LST affects the city dwellers' Human Thermal Comfort (HTC). To address these issues, unlike most prior research, we assess not only the influence of Land Use and Land Cover (LULC) alterations on summer LST but also on winter LST in Chittagong City of Bangladesh between 1993 and 2020 by using Remote Sensing (RS) and Geographic Information Systems (GIS). Additionally, the study evaluates the impact of LULC changes on the HTC during summer as LST substantially affects HTC in summer. The LULC analysis shows an increase in built-up area by 204% from bare lands, vegetated lands, lowlands, and water bodies between 1993 and 2020. In contrast, bare lands were converted from naturally vegetated surfaces, followed by lowlands and water bodies because of anthropogenic activities. The LSTs of Chittagong city, derived from remote sensing data, show a strong upward trend, with summer (winter) ranges of 20.62–34.07 °C (7.50–27.52 °C), 22.82–37.62 °C (14.92–29.32 °C), and 22.32–43.52 °C (17.08–31.83 °C) for 1993, 2007, and 2020, respectively. Between 1993 and 2020, the spatial mean winter and summer LSTs increased by 4.04 °C and 6.45 °C, respectively, or 0.15 °C and 0.24 °C per year. Chittagong had the highest mean LST in built-up areas for all the years. In addition, the study area's HTC gradually shifted to intense heat stress. The summer LST strongly correlated with normalized difference vegetation index (NDVI), normalized difference built-up index (NDBI) and normalized difference water index (NDWI) while winter LST exhibited poor correlation with these indices.https://www.tandfonline.com/doi/10.1080/19475705.2022.2114384Land coverland surface temperaturehuman thermal comfortremote sensingGIS |
| spellingShingle | H. M. Imran Anwar Hossain Mahaad Issa Shammas Mohan Kumar Das Md. Rabiul Islam Kalimur Rahman Mansour Almazroui Land surface temperature and human thermal comfort responses to land use dynamics in Chittagong city of Bangladesh Geomatics, Natural Hazards & Risk Land cover land surface temperature human thermal comfort remote sensing GIS |
| title | Land surface temperature and human thermal comfort responses to land use dynamics in Chittagong city of Bangladesh |
| title_full | Land surface temperature and human thermal comfort responses to land use dynamics in Chittagong city of Bangladesh |
| title_fullStr | Land surface temperature and human thermal comfort responses to land use dynamics in Chittagong city of Bangladesh |
| title_full_unstemmed | Land surface temperature and human thermal comfort responses to land use dynamics in Chittagong city of Bangladesh |
| title_short | Land surface temperature and human thermal comfort responses to land use dynamics in Chittagong city of Bangladesh |
| title_sort | land surface temperature and human thermal comfort responses to land use dynamics in chittagong city of bangladesh |
| topic | Land cover land surface temperature human thermal comfort remote sensing GIS |
| url | https://www.tandfonline.com/doi/10.1080/19475705.2022.2114384 |
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