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- Title
Comment on "Carbon farming in hot, dry coastal areas: an option for climate change mitigation" by Becker et al. (2013).
- Authors
Heimann, M.
- Abstract
Becker et al. (2013) argue that an afforestation of 0.73 109 ha with Jatropha curcas plants would generate an additional terrestrial carbon sink of 4.3 PgC yr-1, enough to stabilise the atmospheric mixing ratio of carbon dioxide (CO2) at current levels. However, this is not consistent with the dynamics of the global carbon cycle. Using a well established global carbon cycle model, the effect of adding such a hypothetical sink leads to a reduction of atmospheric CO2 levels in the year 2030 by 25 ppm compared to a reference scenario. However, the stabilisation of the atmospheric CO2 concentration requires a much larger additional sink or corresponding reduction of anthropogenic emissions.
- Subjects
AFFORESTATION; CLIMATE change mitigation; COASTS; CARBON cycle; CARBON dioxide; EMISSIONS (Air pollution)
- Publication
Earth System Dynamics Discussions, 2013, Vol 4, Issue 2, p869
- ISSN
2190-4995
- Publication type
Opinion
- DOI
10.5194/esdd-4-869-2013