Evaporation from Trees Has Global Cooling Effect

Via ecogeek.org, 23-09-2011

Scientists at the Carnegie Institution’s Global Ecology department have published a study that found that evaporation from trees has a cooling effect on the climate.

Because water vapor is known to act as a greenhouse gas, scientists were unsure what role evaporation played, but it turns out that evaporation from trees causes low-level clouds to form in the atmosphere, which reflect the sun’s rays.  The scientists created models that showed that not only did cooling occur locally (which was already known), but that the effect was a global one where tree evaporation created more low-level clouds around the world.

Trees have proven themselves to be great climate regulators and this new finding just adds to the list of reasons to preserve our forests and plant new trees.

via Yale e360