When averaged out over all the world’s cities, tree cover — by giving shade and releasing water vapor — cools an average of 0.27 degrees Fahrenheit (0.15 degrees Celsius), according to a study in Wednesday’s Nature Communications.
Without those trees, the world cities would warm on average by 0.56 degrees Fahrenheit (0.31 degrees Celsius) due to the urban heat island effect, where dark roofs and pavement absorb heat. The human-caused warming mechanism is distinct from climate change caused by the burning of fossil fuels.
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[AP reports](https://www.yahoo.com/news/articles/study-says-trees-counter-half-091121364.html?ncid=redditnewsus) – Trees are countering nearly half the urban heating from pavement and buildings in the world’s cities, but they’re not doing enough cooling in hotter, poorer cities where it’s needed the most as the world warms, a new study found.
When averaged out over all the world’s cities, tree cover — by giving shade and releasing water vapor — cools an average of 0.27 degrees Fahrenheit (0.15 degrees Celsius), according to a study in Wednesday’s Nature Communications.
Without those trees, the world cities would warm on average by 0.56 degrees Fahrenheit (0.31 degrees Celsius) due to the urban heat island effect, where dark roofs and pavement absorb heat. The human-caused warming mechanism is distinct from climate change caused by the burning of fossil fuels.