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Uploaded on Wednesday 22 Feb 2012 by GRID-Arendal

The carbon cycle

Year: 2005
From collection: Vital Climate Graphics
Author: Philippe Rekacewicz, UNEP/GRID-Arendal
The global carbon cycle shows the carbon reservoirs in GtC (gigatonne= one thousand million tonnes) and fluxes in GtC/year. The indicated figures are annual averages over the period 1980 to 1989. The component cycles are simplified and the figures present average values. The riverine flux, particularly the anthropogenic portion, is currently very poorly quantified and is not shown here. Evidence is accumulating that many of the fluxes can fluctuate significantly from year to year. In contrast to the static view conveyed in figures like this one, the carbon system is dynamic and coupled to the climate system on seasonal, interannual and decadal timescales.
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