How Your Trees Cool The Planet
Anyone who has walked outside on a sunny day knows that forests and trees matter for temperature and humidity.
The famers we work with, like Esther on Mount Kenya and Sakthi in Southern India understand from personal experience that trees cool their homes, livestock and crops.
So far, the global drive to preserve and plant forests as been inspired by their ability to sequester carbon, but a new review explores how their ability to promote rainfall and cool their habitat might play an even more important role in solving the problems of climate change.
"As trees process and redistribute water, they simultaneously cool planetary surfaces", says Dr. David Ellison, lead author of the review.
How Trees Make Rain
Trees are essentially giant air conditioners with no power bills. They use solar energy to convert water into vapour, which cools their surroundings. On a hot day the surface temperature of a forest is similar to that of a nearby lake, while a dry patch of meadow or a tarmac road are more than 20 °C hotter. This cooling power is equivalent to the output of two home air-conditioning units.
Just when we thought trees couldn't get any better...
We are grateful to our Brazilian our tree-planting partners WeForest.org, who inspired this article with their brilliant report.
The Path to A Billion Trees
Thanks to our global circle of treesister members, we have funded the planting 385,966 trees to date. It's astounding to imagine the cooling effect that these trees will have, and we hope the new information in the WeForest study will inspire a fresh inspiration to preserve and replenish the world's forests.
We will launch a campaign later in the year to expand our planting efforts to one million trees a month, and we're charting a course to be planting a billion trees a year by 2020.
We'd love to have you with us: www.treesisters.org/join.
Join the TreeSisters community
We are a social impact initiative exploring the role that women can play in rebalancing humanity's relationship with nature and trees. We inspire feminine leadership, behaviour change and crowd-fund tropical reforestation. To give monthly and become a treesister, please visit: treesisters.org/home/join