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dc.contributor.author
Lauvset, Siv K.
dc.contributor.author
Gruber, Nicolas
dc.contributor.author
Landschützer, Peter
dc.contributor.author
Olsen, Are
dc.contributor.author
Tjiputra, Jerry F.
dc.date.accessioned
2018-10-02T08:45:11Z
dc.date.available
2018-10-02T08:41:37Z
dc.date.available
2018-10-02T08:45:11Z
dc.date.issued
2015
dc.identifier.other
10.5194/bg-12-1285-2015
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/292825
dc.identifier.doi
10.3929/ethz-b-000099514
dc.description.abstract
We report global long-term trends in surface ocean pH using a new pH data set computed by combining fCO2 observations from the Surface Ocean CO2 Atlas (SOCAT) version 2 with surface alkalinity estimates based on temperature and salinity. Trends were determined over the periods 1981–2011 and 1991–2011 for a set of 17 biomes using a weighted linear least squares method. We observe significant decreases in surface ocean pH in ~70% of all biomes and a mean rate of decrease of 0.0018 ± 0.0004 yr−1 for 1991–2011. We are not able to calculate a global trend for 1981–2011 because too few biomes have enough data for this. In half the biomes, the rate of change is commensurate with the trends expected based on the assumption that the surface ocean pH change is only driven by the surface ocean CO2 chemistry remaining in a transient equilibrium with the increase in atmospheric CO2. In the remaining biomes, deviations from such equilibrium may reflect that the trend of surface ocean fCO2 is not equal to that of the atmosphere, most notably in the equatorial Pacific Ocean, or may reflect changes in the oceanic buffer (Revelle) factor. We conclude that well-planned and long-term sustained observational networks are key to reliably document the ongoing and future changes in ocean carbon chemistry due to anthropogenic forcing.
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
Trends and drivers in global surface ocean pH over the past 3 decades
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2015-03-02
ethz.journal.title
Biogeosciences
ethz.journal.volume
12
en_US
ethz.journal.issue
5
en_US
ethz.pages.start
1285
en_US
ethz.pages.end
1298
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::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.isNewVersionOf
10.3929/ethz-b-000094280
ethz.date.deposited
2017-06-11T16:46:17Z
ethz.source
ECIT
ethz.identifier.importid
imp5936530c6d7d164697
ethz.identifier.importid
imp593653c8e1ebd69910
ethz.ecitpid
pub:155660
ethz.ecitpid
pub:168913
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2018-12-03T00:38:55Z
ethz.rosetta.lastUpdated
2019-01-02T14:19:41Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
dc.identifier.olduri
http://hdl.handle.net/20.500.11850/99514
dc.identifier.olduri
http://hdl.handle.net/20.500.11850/164405
ethz.COinS
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