IPCC: Time for a Global Carbon Budget

The Progressive Economics Forum
Posted by Marc Lee under climate change.
September 27th, 2013

The new IPCC report for the first time sets out a carbon budget. Here is the relevant paragraph from the Summary for Policy-makers:

  • Limiting the warming caused by anthropogenic CO2 emissions alone with a probability of >33%, >50%, and >66% to less than 2°C since the period 1861–1880, will require cumulative CO2 emissions from all anthropogenic sources to stay between 0 and about 1560 GtC, 0 and about 1210 GtC, and 0 and about 1000 GtC since that period respectively. These upper amounts are reduced to about 880 GtC, 840 GtC, and 800 GtC respectively, when accounting for non-CO2 forcings as in RCP2.6. An amount of 531 [446 to 616] GtC, was already emitted by 2011.

For the full post go to: http://www.progressive-economics.ca/2013/09/27/ipcc-time-for-a-global-carbon-budget/