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dc.contributor.author
Valentini, Riccardo
dc.contributor.author
Arneth, Almuth
dc.contributor.author
Bombelli, Antonio
dc.contributor.author
Castaldi, Simona
dc.contributor.author
Cazzolla Gatti, Roberto
dc.contributor.author
Chevallier, Frédéric
dc.contributor.author
Ciais, Philippe
dc.contributor.author
Grieco, Elisa
dc.contributor.author
Hartmann, Jens
dc.contributor.author
Houghton, R.A.
dc.contributor.author
Houghton, R.A.
dc.contributor.author
Jung, Martin
dc.contributor.author
Kutsch, Werner Leo
dc.contributor.author
Malhi, Yadvinder Singh
dc.contributor.author
Merbold, Lutz
dc.contributor.author
Murray-Tortarolo, Guillermo
dc.contributor.author
Papale, Dario
dc.contributor.author
Peylin, Philippe
dc.contributor.author
Poulter, Benjamin
dc.contributor.author
Raymond, Peter A.
dc.contributor.author
Santini, Monia
dc.contributor.author
Sitch, Stephen
dc.contributor.author
Vaglio Laurin, Gaia
dc.contributor.author
van der Werf, Guido R.
dc.contributor.author
Williams, Christopher Alan
dc.contributor.author
Scholes, Robert J.
dc.date.accessioned
2018-10-08T13:34:41Z
dc.date.available
2017-06-11T06:26:59Z
dc.date.available
2017-10-30T16:30:36Z
dc.date.available
2018-10-08T13:34:41Z
dc.date.issued
2014-01-28
dc.identifier.other
10.5194/bg-11-381-2014
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/81978
dc.identifier.doi
10.3929/ethz-b-000081978
dc.description.abstract
This paper, developed under the framework of the RECCAP initiative, aims at providing improved estimates of the carbon and GHG (CO2, CH4 and N2O) balance of continental Africa. The various components and processes of the African carbon and GHG budget are considered, existing data reviewed, and new data from different methodologies (inventories, ecosystem flux measurements, models, and atmospheric inversions) presented. Uncertainties are quantified and current gaps and weaknesses in knowledge and monitoring systems described in order to guide future requirements. The majority of results agree that Africa is a small sink of carbon on an annual scale, with an average value of −0.61 ± 0.58 Pg C yr−1. Nevertheless, the emissions of CH4 and N2O may turn Africa into a net source of radiative forcing in CO2 equivalent terms. At sub-regional level, there is significant spatial variability in both sources and sinks, due to the diversity of biomes represented and differences in the degree of anthropic impacts. Southern Africa is the main source region; while central Africa, with its evergreen tropical forests, is the main sink. Emissions from land-use change in Africa are significant (around 0.32 ± 0.05 Pg C yr−1), even higher than the fossil fuel emissions: this is a unique feature among all the continents. There could be significant carbon losses from forest land even without deforestation, resulting from the impact of selective logging. Fires play a significant role in the African carbon cycle, with 1.03 ± 0.22 Pg C yr−1 of carbon emissions, and 90% originating in savannas and dry woodlands. A large portion of the wild fire emissions are compensated by CO2 uptake during the growing season, but an uncertain fraction of the emission from wood harvested for domestic use is not. Most of these fluxes have large interannual variability, on the order of ±0.5 Pg C yr−1 in standard deviation, accounting for around 25% of the year-to-year variation in the global carbon budget. Despite the high uncertainty, the estimates provided in this paper show the important role that Africa plays in the global carbon cycle, both in terms of absolute contribution, and as a key source of interannual variability.
en_US
dc.language.iso
en
en_US
dc.publisher
Copernicus
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
A full greenhouse gases budget of africa: Synthesis, uncertainties, and vulnerabilities
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2014-01-28
ethz.journal.title
Biogeosciences
ethz.journal.volume
11
en_US
ethz.journal.issue
2
en_US
ethz.pages.start
381
en_US
ethz.pages.end
407
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.identifier.nebis
006289717
ethz.publication.place
Göttingen
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02703 - Institut für Agrarwissenschaften / Institute of Agricultural Sciences::03648 - Buchmann, Nina / Buchmann, Nina
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02703 - Institut für Agrarwissenschaften / Institute of Agricultural Sciences::03648 - Buchmann, Nina / Buchmann, Nina
ethz.date.deposited
2017-06-11T06:27:14Z
ethz.source
ECIT
ethz.identifier.importid
imp593651bed2f9170557
ethz.ecitpid
pub:129192
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-14T20:00:19Z
ethz.rosetta.lastUpdated
2019-01-02T14:24:20Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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