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dc.contributor.author
Jahn, A.
dc.contributor.author
Lindsay, Keith
dc.contributor.author
Giraud, Xavier
dc.contributor.author
Gruber, Nicolas
dc.contributor.author
Otto-Bliesner, Bette L.
dc.contributor.author
Liu, Z.
dc.contributor.author
Brady, Esther C.
dc.date.accessioned
2019-05-29T08:10:28Z
dc.date.available
2017-06-11T15:09:31Z
dc.date.available
2019-05-29T08:04:48Z
dc.date.available
2019-05-29T08:10:28Z
dc.date.issued
2014
dc.identifier.issn
1991-962X
dc.identifier.issn
1991-9611
dc.identifier.other
10.5194/gmdd-7-7461-2014
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/95582
dc.identifier.doi
10.3929/ethz-b-000095582
dc.description.abstract
Carbon isotopes in the ocean are frequently used as paleo climate proxies and aspresent-day geochemical ocean tracers. In order to allow a more direct comparisonof climate model results with this large and currently underutilized dataset, we added a carbon isotope module to the ocean model of the Community Earth System Model5(CESM), containing the cycling of the stable isotope13C and the radioactive isotope14C. We implemented the14C tracer in two ways: in the “abiotic” case, the14C tracer isonly subject to air–sea gas exchange, physical transport, and radioactive decay, whilein the “biotic” version, the14C additionally follows the13C tracer through all biogeo-chemical and ecological processes. Thus, the abiotic14C tracer can be run without10the ecosystem module, requiring significantly less computational resources. The car-bon isotope module calculates the carbon isotopic fractionation during gas exchange,photosynthesis, and calcium carbonate formation, while any subsequent biological pro-cess such as remineralization as well as any external inputs are assumed to occurwithout fractionation. Given the uncertainty associated with the biological fractionation15during photosynthesis, we implemented and tested three parameterizations of differ-ent complexity. Compared to present-day observations, the model is able to simulatethe oceanic14C bomb uptake and the13C Suess effect reasonably well compared toobservations and other model studies. At the same time, the carbon isotopes revealbiases in the physical model, for example a too sluggish ventilation of the deep Pacific Ocean.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Copernicus Publications
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
Carbon Isotopes in the Ocean Model of the Community Earth System Model (CESM1)
en_US
dc.type
Other Journal Item
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2014-11-06
ethz.journal.title
Geoscientific Model Development Discussions
ethz.journal.volume
7
en_US
ethz.journal.issue
6
en_US
ethz.journal.abbreviated
Geosci. model dev. discuss.
ethz.pages.start
7461
en_US
ethz.pages.end
7503
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.nebis
010180235
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::02721 - Inst. f. Biogeochemie u. Schadstoffdyn. / Inst. Biogeochem. and Pollutant Dynamics::03731 - Gruber, Nicolas / Gruber, Nicolas
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02721 - Inst. f. Biogeochemie u. Schadstoffdyn. / Inst. Biogeochem. and Pollutant Dynamics::03731 - Gruber, Nicolas / Gruber, Nicolas
ethz.relation.isVariantFormOf
10.3929/ethz-b-000104367
ethz.date.deposited
2017-06-11T15:09:47Z
ethz.source
ECIT
ethz.identifier.importid
imp593652c25078b52812
ethz.ecitpid
pub:149929
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-15T04:12:04Z
ethz.rosetta.lastUpdated
2020-02-15T19:22:04Z
ethz.rosetta.versionExported
true
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=Carbon%20Isotopes%20in%20the%20Ocean%20Model%20of%20the%20Community%20Earth%20System%20Model%20(CESM1)&rft.jtitle=Geoscientific%20Model%20Development%20Discussions&rft.date=2014&rft.volume=7&rft.issue=6&rft.spage=7461&rft.epage=7503&rft.issn=1991-962X&1991-9611&rft.au=Jahn,%20A.&Lindsay,%20Keith&Giraud,%20Xavier&Gruber,%20Nicolas&Otto-Bliesner,%20Bette%20L.&rft.genre=unknown&
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