Global carbon cycle diagram
Storage and annual exchange of carbon
|
The diagram left shows the storage and annual exchange of carbon between the atmosphere, hydrosphere and geosphere in gigatons — or billions of tons — of Carbon (GtC). Burning fossil fuels adds about 5.5 GtC of carbon per year into the atmosphere. The black numbers indicate how much carbon is stored in various reservoirs (in billions of tons). The blue numbers indicate how much carbon moves between reservoirs each year. |