Background climate modulates the impact of land cover on urban surface temperature
Abstract Cities with different background climates experience different thermal environments. Many studies have investigated land cover effects on surface urban heat in individual cities. However, a quantitative understanding of how background climates modify the thermal impact of urban land covers...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-09-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-19431-x |
| _version_ | 1811183780294033408 |
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| author | Marzie Naserikia Melissa A. Hart Negin Nazarian Benjamin Bechtel |
| author_facet | Marzie Naserikia Melissa A. Hart Negin Nazarian Benjamin Bechtel |
| author_sort | Marzie Naserikia |
| collection | DOAJ |
| description | Abstract Cities with different background climates experience different thermal environments. Many studies have investigated land cover effects on surface urban heat in individual cities. However, a quantitative understanding of how background climates modify the thermal impact of urban land covers remains elusive. Here, we characterise land cover and their impacts on land surface temperature (LST) for 54 highly populated cities using Landsat-8 imagery. Results show that urban surface characteristics and their thermal response are distinctly different across various climate regimes, with the largest difference for cities in arid climates. Cold cities show the largest seasonal variability, with the least seasonality in tropical and arid cities. In tropical, temperate, and cold climates, normalised difference built-up index (NDBI) is the strongest contributor to LST variability during warm months followed by normalised difference vegetation index (NDVI), while normalised difference bareness index (NDBaI) is the most important factor in arid climates. These findings provide a climate-sensitive basis for future land cover planning oriented at mitigating local surface warming. |
| first_indexed | 2024-04-11T09:52:44Z |
| format | Article |
| id | doaj.art-31157c3c48324e18bda5bf3ce3a6ede6 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-11T09:52:44Z |
| publishDate | 2022-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-31157c3c48324e18bda5bf3ce3a6ede62022-12-22T04:30:45ZengNature PortfolioScientific Reports2045-23222022-09-0112111510.1038/s41598-022-19431-xBackground climate modulates the impact of land cover on urban surface temperatureMarzie Naserikia0Melissa A. Hart1Negin Nazarian2Benjamin Bechtel3Australian Research Council Centre of Excellence for Climate Extremes, University of New South WalesAustralian Research Council Centre of Excellence for Climate Extremes, University of New South WalesAustralian Research Council Centre of Excellence for Climate Extremes, University of New South WalesDepartment of Geography, Ruhr-University BochumAbstract Cities with different background climates experience different thermal environments. Many studies have investigated land cover effects on surface urban heat in individual cities. However, a quantitative understanding of how background climates modify the thermal impact of urban land covers remains elusive. Here, we characterise land cover and their impacts on land surface temperature (LST) for 54 highly populated cities using Landsat-8 imagery. Results show that urban surface characteristics and their thermal response are distinctly different across various climate regimes, with the largest difference for cities in arid climates. Cold cities show the largest seasonal variability, with the least seasonality in tropical and arid cities. In tropical, temperate, and cold climates, normalised difference built-up index (NDBI) is the strongest contributor to LST variability during warm months followed by normalised difference vegetation index (NDVI), while normalised difference bareness index (NDBaI) is the most important factor in arid climates. These findings provide a climate-sensitive basis for future land cover planning oriented at mitigating local surface warming.https://doi.org/10.1038/s41598-022-19431-x |
| spellingShingle | Marzie Naserikia Melissa A. Hart Negin Nazarian Benjamin Bechtel Background climate modulates the impact of land cover on urban surface temperature Scientific Reports |
| title | Background climate modulates the impact of land cover on urban surface temperature |
| title_full | Background climate modulates the impact of land cover on urban surface temperature |
| title_fullStr | Background climate modulates the impact of land cover on urban surface temperature |
| title_full_unstemmed | Background climate modulates the impact of land cover on urban surface temperature |
| title_short | Background climate modulates the impact of land cover on urban surface temperature |
| title_sort | background climate modulates the impact of land cover on urban surface temperature |
| url | https://doi.org/10.1038/s41598-022-19431-x |
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