Urban heat island effect always ignored by temperature-obsessed
An analysis of 10 cities from across the globe (Kara and Yavuz, 2025) reveals airports and industry centers are, on average, 2.5°C to 2.8°C warmer than neighboring green spaces
“Airports exhibited a mean daytime land surface temperature (LST) that was 2.5 °C higher than surrounding areas, while industrial zones demonstrated an even greater temperature disparity, with an average increase of 2.81 °C.”
The urban heat island effect can leave airports and industrial centers as much as 12°C warmer than nearby vegetated, forested areas.
“Mexico City’s green spaces are up to 12.13 °C cooler than its urban core.”
Warming trends in recent decades are generally confined to urban areas, whereas non-urban areas have been cooling.
For example, from 2001-2021 urban areas warmed +0.04°C/yr, but vegetated, bareland, and water body areas cooled -0.07°C, -0.03°C, -0.04°C/yr, respectively, in the city of Chongqing.
“In contrast, cold spots characterized by dense vegetation showed a notable cooling effect, with LST differences reaching −3.7 °C. Similarly, proximity to water bodies contributed to temperature mitigation, as areas near significant water sources recorded lower daytime LST differences, averaging −4.09 °C.”
Source: mdpi.com/2413-8851/9/4/115
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