Posted on February 13, 2012 by Bob Berwyn
The emergence of land plants may have dramatically shifted the Earth's climate about 470 million years ago.
Emergence of mosses tilted Earth’s carbon balance
By Summit Voice
SUMMIT COUNTY — The emergence of primitive plants some 470 million years ago had a profound impact on the climate of the Earth. As they weathered the rocks they grew on, the plants released calcium and magnesium ions, removing carbon dioxide from the atmosphere.
The same weathering process resulted in massive quantities of iron and phosphorus reaching the oceans and fueling productivity and resulting in even more carbon being absorbed from the atmosphere. (more…)
Filed under: climate and weather, Environment, Summit County news | Tagged: carbon balance, climate, Exeter University, global warming, Ordovician Age, Oxford University | 1 Comment »
Posted on April 18, 2011 by Bob Berwyn
New research shows North American forests have greater carbon sequestration capacity than previously believed.
Researchers develop the most accurate carbon-balance assessment to-date
By Summit Voice
SUMMIT COUNTY — Forests and other terrestrial ecosystems across the U.S. can absorb more carbon than previously thought, but major droughts or other disturbances can affect their ability to sequester emissions.
Widespread droughts, like those in 2002 and 2006, can cut the amount of carbon sequestered by about 20 percent, a group of researchers concluded in a recent study that was supported by the National Science Foundation and U.S. Department of Energy.
The research, published by scientists from 35 institutions in the journal Agricultural and Forest Meteorology, was based on satellite measurements and dozens of environmental observation sites. Not all of this data had previously been incorporated into earlier estimates, and the new study provides one of the most accurate assessments to date of the nation’s carbon balance. (more…)
Filed under: Colorado, Environment, forests, global warming | Tagged: Agricultural and Forest Meteorology, carbon balance, Carbon sink, Environment, forest carbon sequestration, global warming, National Science Foundation, Oregon State University, Summit County News | Leave a Comment »