Current urban tree cover mitigates 41–49% of the potential maximum air-temperature urban heat island effect, reducing summer air temperatures by a population-weighted average of 0.15 pm across 8,919 cities. However, these benefits are unequally distributed, favoring high-income areas and suburbia, and currently only counteract about 10% of mid-century climate change warming, making equitable canopy expansion crucial.

Current urban tree cover mitigates 41–49% of the potential maximum air-temperature urban heat island  effect, reducing summer air temperatures by a population-weighted average of 0.15 pm  across 8,919 cities. However, these benefits are unequally distributed, favoring high-income areas and suburbia, and currently only counteract about 10% of mid-century climate change warming, making equitable canopy expansion crucial. 

Key Findings on Urban Trees and Heat Mitigation:
Significant Cooling Impact:-
 Trees provide significant localized cooling through shade and evapotranspiration.
Global Impact: -
Across 8,919 urban areas, tree canopy reduces potential summer UHI intensity by roughly 48.6±1.3%.
Unequal Benefits: -
The cooling benefits are not distributed equally, with higher-income neighborhoods and suburbs often experiencing greater tree canopy coverage compared to lower-income areas.
Limited Long-Term Mitigation: -
Current and future predicted tree canopy coverage will only offset about 10% of the median projected climate-change warming by mid-century.
Human Impact: -
Approximately 914 million people  benefit from an air temperature reduction of >0.25^due to current tree cover. 
Recommendations for Future Action:-
Targeted Planting: -
The study suggests prioritize, strategic tree canopy expansion in high-density, low-income urban areas to maximize equity and reduce heat-related illnesses.
Combined Strategies: -
While trees are a powerful nature-based solution, they should be combined with other climate adaptation measures to handle future heat levels. 
Specific types of trees that are most effective for urban cooling.
Strategies for urban planners to increase tree canopy in dense, low-income areas.
Alternative, structural solutions for reducing the UHI effect. 
 . Although tree cover reduces the urban heat island, no global estimate quantifies air temperature reductions by contemporary or future tree cover.
MJF Lion ER YK Sharma 

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