Observational Constraints on the Spatial Effect of Greenness and Canopy Cover on Urban Heat in a Major Midlatitude City
Abstract Urban heat stress is a critical issue, particularly in cities where dense infrastructure and limited green space exacerbate temperature extremes. This study investigates the impact of greenery (EVI2), canopy cover (CC), impervious cover (IC), and water bodies on heat index in Chicago using...
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| Format: | Article |
| Language: | English |
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Wiley
2024-11-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2024GL110847 |
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| author | Jangho Lee Max Berkelhammer |
| author_facet | Jangho Lee Max Berkelhammer |
| author_sort | Jangho Lee |
| collection | DOAJ |
| description | Abstract Urban heat stress is a critical issue, particularly in cities where dense infrastructure and limited green space exacerbate temperature extremes. This study investigates the impact of greenery (EVI2), canopy cover (CC), impervious cover (IC), and water bodies on heat index in Chicago using high‐resolution data from the Heat Watch campaign. We find that EVI2, CC and proximity to water body significantly reduce heat while IC increases heat, particularly in the afternoon when solar radiation is intense. Additionally, the effective radius that land cover impacts heat is smaller in the afternoon. The combined effect analysis indicates that enhancing total greenness, not just canopy cover, is the most effective strategy to reduce heat. This study underscores the importance of strategic vegetation management, highlighting the critical role of integrated approaches in reducing urban heat. |
| format | Article |
| id | doaj-art-48fb98461fcd4e05916ec2cdc7c03bf6 |
| institution | DOAJ |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-48fb98461fcd4e05916ec2cdc7c03bf62025-08-20T03:02:07ZengWileyGeophysical Research Letters0094-82761944-80072024-11-015121n/an/a10.1029/2024GL110847Observational Constraints on the Spatial Effect of Greenness and Canopy Cover on Urban Heat in a Major Midlatitude CityJangho Lee0Max Berkelhammer1Earth and Environmental Sciences University of Illinois Chicago Chicago IL USAEarth and Environmental Sciences University of Illinois Chicago Chicago IL USAAbstract Urban heat stress is a critical issue, particularly in cities where dense infrastructure and limited green space exacerbate temperature extremes. This study investigates the impact of greenery (EVI2), canopy cover (CC), impervious cover (IC), and water bodies on heat index in Chicago using high‐resolution data from the Heat Watch campaign. We find that EVI2, CC and proximity to water body significantly reduce heat while IC increases heat, particularly in the afternoon when solar radiation is intense. Additionally, the effective radius that land cover impacts heat is smaller in the afternoon. The combined effect analysis indicates that enhancing total greenness, not just canopy cover, is the most effective strategy to reduce heat. This study underscores the importance of strategic vegetation management, highlighting the critical role of integrated approaches in reducing urban heat.https://doi.org/10.1029/2024GL110847urban climateremote sensingair temperatureurban heat islandcanopyvegetation |
| spellingShingle | Jangho Lee Max Berkelhammer Observational Constraints on the Spatial Effect of Greenness and Canopy Cover on Urban Heat in a Major Midlatitude City Geophysical Research Letters urban climate remote sensing air temperature urban heat island canopy vegetation |
| title | Observational Constraints on the Spatial Effect of Greenness and Canopy Cover on Urban Heat in a Major Midlatitude City |
| title_full | Observational Constraints on the Spatial Effect of Greenness and Canopy Cover on Urban Heat in a Major Midlatitude City |
| title_fullStr | Observational Constraints on the Spatial Effect of Greenness and Canopy Cover on Urban Heat in a Major Midlatitude City |
| title_full_unstemmed | Observational Constraints on the Spatial Effect of Greenness and Canopy Cover on Urban Heat in a Major Midlatitude City |
| title_short | Observational Constraints on the Spatial Effect of Greenness and Canopy Cover on Urban Heat in a Major Midlatitude City |
| title_sort | observational constraints on the spatial effect of greenness and canopy cover on urban heat in a major midlatitude city |
| topic | urban climate remote sensing air temperature urban heat island canopy vegetation |
| url | https://doi.org/10.1029/2024GL110847 |
| work_keys_str_mv | AT jangholee observationalconstraintsonthespatialeffectofgreennessandcanopycoveronurbanheatinamajormidlatitudecity AT maxberkelhammer observationalconstraintsonthespatialeffectofgreennessandcanopycoveronurbanheatinamajormidlatitudecity |