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Climate study finds human ‘fingerprint’ in Northern Hemisphere greening

Posted at 1:29 pm June 29, 2016
By Oak Ridge National Laboratory Leave a Comment

North Hemisphere Greening

Earth system models simulate Northern Hemisphere greening. The figure shows the spatial distribution of leaf area index trends (m2/m2/30yr) in the growing season (April–October) during the period of 1982–2011 in the mean of satellite observations (top), Earth system model (ESM) simulations with natural forcings alone (lower left), and ESM simulations with combined anthropogenic and natural forcings (lower right). (Image by ORNL)

 

A multinational team led by the U.S. Department of Energy’s Oak Ridge National Laboratory Climate Change Science Institute has found the first positive correlation between human activity and enhanced vegetation growth.

The research team, led by Jiafu Mao of the Ecosystem Simulation Science group in the Environmental Sciences Division, used new environmental data and strict statistical methods to discover a significant human-vegetation interaction in the northern extratropical latitudes, the section of the planet spanning 30 to 75 degrees north, roughly between the Tropic of Cancer and the North Frigid Zone above the Arctic Circle.

“This is the first clear evidence of a discernible human fingerprint on physiological vegetation changes at the continental scale,” Mao said. [Read more…]

Filed Under: Front Page News, Oak Ridge National Laboratory, U.S. Department of Energy Tagged With: Climate Change Science Institute, climate study, Dan Ricciuto, DOE Office of Science, Earth system model, Ecosystem Simulation Science, enhanced vegetation growth, Environmental Sciences Division, ESM, ESM simulations, Forrest Hoffman, human activity, Human-induced greening of the northern extratropical land surface, Jiafu Mao, Nature Climate Change, Northern Hemisphere greening, Oak Ridge National Laboratory, Peter Thornton, U.S. Department of Energy, Xiaoying Shi

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