Global carbon budget 2014

The Global Carbon Project (GCP) was established in 2001 in recognition of the large scientific challenges and critical nature of the carbon cycle for Earth's sustainability. The scientific goal of the project is to develop yearly a complete picture of the global carbon cycle, including both its biophysical and human dimensions together with the interactions and feedbacks between them. The last update revealed that Carbon dioxide (CO2) emissions from fossil fuel burning and cement production increased by 2.3% in 2013, with a total of 9.9±0.5 GtC (billion tonnes of carbon) (36 GtCO2) emitted to the atmosphere, 61% above 1990 emissions (the Kyoto Protocol reference year). Emissions are projected to increase by a further 2.5% in 2014.

In 2013, the ocean and land carbon sinks respectively removed 27% and 23% of total CO2 (fossil fuel and land use change), leaving 50% of emissions into the atmosphere. The ocean sink in 2013 was 2.9±0.5 GtC, slightly above the 2004-2013 average of 2.6±0.5, and the land sink was 2.5±0.9 GtC slightly below the 2004-2013 average of 2.9±0.8. Total cumulative emissions from 1870 to 2013 were 390±20 GtC from fossil fuels and cement, and 145± 50 from land use change. The total of 535±55GtC was partitioned among the atmosphere (225±5 GtC), ocean (150±20 GtC), and the land (155±60 GtC).

Authors

Le Quere et al. (2015), with PBL contribution of Kees Klein Goldewijk

Specifications

Publication title
Global carbon budget 2014
Publication date
21 September 2014
Publication type
Publication
Magazine
Earth System Science Data
Product number
1582