carbon dioxide


Physical Geography

Representation of the contemporary global carbon cycle. Changes are measured in gigatons or carbon per year (GtC/y). Numbers in parentheses refer to stored carbon pools. Red indicates carbon from human emissions. Humans contribute a net increase of 4 GtC/y to atmospheric carbon. Source: US Department of Energy, 2008.Representation of the contemporary global carbon cycle. Changes are measured in gigatons or carbon per year (GtC/y). Numbers in parentheses refer to stored carbon pools. Red indicates carbon from human emissions. Humans contribute a net increase of 4 GtC/y to atmospheric carbon. Source: US Department of Energy, 2008.

Carbon Budget

The global carbon budget is the amount of carbon gained and lost in the natural and manmade workings of the world. The global carbon budget is part of the greater carbon cycle and the ways in which the Earth’s reservoirs of carbon are added to and subtracted from. The global […]

Human Geography

Per capita carbon emissions from transportation and residential energy use, 2005 (metric tons). Map: Brookings.Per capita carbon emissions from transportation and residential energy use, 2005 (metric tons). Map: Brookings.

Carbon Footprint of Metropolitan U.S.

In a study issued by the Brookings Instititute, the surprising conclusion was that the carbon footprint of urban dwellers was 14% smaller than the average American’s.   The top three smallest metropolitan area carbon footprints in order are: Honolulu, HI, Los Angeles, CA and Portland, OR.  The top three largest metropolitan […]