06 Sep 2012:
Destruction of Tropical Forests
Reduces Regional Rainfall, Study Says
A new study has found that destruction of the world’s tropical forests may significantly reduce regional rainfall across large regions
, a phenomenon researchers say could have devastating effects for people living in and around the Amazon and Congo basins. Using satellite observations of rainfall and
vegetation, as well as atmospheric wind flow patterns, researchers from the University of Leeds and the NERC Center for Ecology & Hydrology found that across 60 percent of the Amazon and Congo rainforests, air passing over extensive forest areas produces twice as much rain as air passing over areas with little vegetation. According to their findings, published in the journal Nature
, this effect in some cases can increase rainfall thousands of miles away. After combining these findings with projected deforestation rates and current trends, the researchers calculated that tropical forest loss could reduce rainfall across the Amazon basin during the wet season by 12 percent by 2050, and 21 percent during the dry season. “We found that the Amazon and Congo forests maintain rainfall over the periphery of the forest basins — regions where large numbers of people live and rely on rainfall for their livelihoods,” said Dominick Spracklen, a researcher at the University of Leeds and lead author of the study.
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
Accepting entries through June 15, 2015.
Yale Environment 360
articles are now available in Spanish and Portuguese on Universia
, the online educational network. Visit the site.
Business & Innovation
Policy & Politics
Pollution & Health
Science & Technology
Antarctica and the Arctic
Central & South America
A three-part series Tainted Harvest
looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup. Read the series.
is now available for mobile devices at e360.yale.edu/mobile
The Warriors of Qiugang
, a Yale Environment 360
video, chronicles a Chinese village’s fight against a polluting chemical plant. It was nominated for a 2011 Academy Award for Best Documentary Short.
Watch the video.
Top Image: aerial view of Iceland
. © Google & TerraMetrics.
, winner of the Yale Environment 360 Video Contest, documents the work of African researchers monitoring wildlife in Uganda's remote Bwindi Impenetrable National Park. Watch the video.