Variations of oceanic oxygen isotopes at the present day and the LGM: equilibrium simulations with an oceanic general circulation model
The isotope-enabled oceanic general circulation model, MPI-OM, is used to simulate the oxygen isotope compositions of sea waters in the oceans under preindustrial and last glacial maximum climate conditions. Simulated oceanic isotope distributions at the last glacial maximum (21 000 yr ago) show fea...
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fttriple:oai:gotriple.eu:10670/1.8dtij7 2023-05-15T15:05:09+02:00 Variations of oceanic oxygen isotopes at the present day and the LGM: equilibrium simulations with an oceanic general circulation model Xu, X. Lohmann, G. Werner, M. Zhang, X. 2018-09-26 https://doi.org/10.5194/cpd-8-4885-2012 https://cp.copernicus.org/preprints/cp-2012-133/ en eng doi:10.5194/cpd-8-4885-2012 10670/1.8dtij7 https://cp.copernicus.org/preprints/cp-2012-133/ undefined Geographica Helvetica - geography eISSN: 1814-9332 geo anthro-bio Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ 2018 fttriple https://doi.org/10.5194/cpd-8-4885-2012 2023-01-22T17:55:39Z The isotope-enabled oceanic general circulation model, MPI-OM, is used to simulate the oxygen isotope compositions of sea waters in the oceans under preindustrial and last glacial maximum climate conditions. Simulated oceanic isotope distributions at the last glacial maximum (21 000 yr ago) show features similar to the preindustrial in most basins but the Northern North Atlantic. With the exception of the ice sheet impact, the oxygen-18 content variations at sea surface during the last glacial maximum are mainly controlled by the changes in boundary isotopic fluxes in most regions, while the changes from subsurface to bottom waters are mostly due to the differences in the water mass circulations. The changes in topography at the northern high latitudes have a remarkable influence on the isotopic composition in the Arctic Ocean. The pre-industrial and the last glacial maximum calcite oxygen isotope compositions in the surface water and their difference are also calculated. These results are compared with the observed values from different foraminifera species and are in agreement with the observations in most regions. Text Arctic Arctic Ocean Foraminifera* Ice Sheet North Atlantic Unknown Arctic Arctic Ocean |
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English |
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geo anthro-bio |
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geo anthro-bio Xu, X. Lohmann, G. Werner, M. Zhang, X. Variations of oceanic oxygen isotopes at the present day and the LGM: equilibrium simulations with an oceanic general circulation model |
topic_facet |
geo anthro-bio |
description |
The isotope-enabled oceanic general circulation model, MPI-OM, is used to simulate the oxygen isotope compositions of sea waters in the oceans under preindustrial and last glacial maximum climate conditions. Simulated oceanic isotope distributions at the last glacial maximum (21 000 yr ago) show features similar to the preindustrial in most basins but the Northern North Atlantic. With the exception of the ice sheet impact, the oxygen-18 content variations at sea surface during the last glacial maximum are mainly controlled by the changes in boundary isotopic fluxes in most regions, while the changes from subsurface to bottom waters are mostly due to the differences in the water mass circulations. The changes in topography at the northern high latitudes have a remarkable influence on the isotopic composition in the Arctic Ocean. The pre-industrial and the last glacial maximum calcite oxygen isotope compositions in the surface water and their difference are also calculated. These results are compared with the observed values from different foraminifera species and are in agreement with the observations in most regions. |
format |
Text |
author |
Xu, X. Lohmann, G. Werner, M. Zhang, X. |
author_facet |
Xu, X. Lohmann, G. Werner, M. Zhang, X. |
author_sort |
Xu, X. |
title |
Variations of oceanic oxygen isotopes at the present day and the LGM: equilibrium simulations with an oceanic general circulation model |
title_short |
Variations of oceanic oxygen isotopes at the present day and the LGM: equilibrium simulations with an oceanic general circulation model |
title_full |
Variations of oceanic oxygen isotopes at the present day and the LGM: equilibrium simulations with an oceanic general circulation model |
title_fullStr |
Variations of oceanic oxygen isotopes at the present day and the LGM: equilibrium simulations with an oceanic general circulation model |
title_full_unstemmed |
Variations of oceanic oxygen isotopes at the present day and the LGM: equilibrium simulations with an oceanic general circulation model |
title_sort |
variations of oceanic oxygen isotopes at the present day and the lgm: equilibrium simulations with an oceanic general circulation model |
publishDate |
2018 |
url |
https://doi.org/10.5194/cpd-8-4885-2012 https://cp.copernicus.org/preprints/cp-2012-133/ |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Foraminifera* Ice Sheet North Atlantic |
genre_facet |
Arctic Arctic Ocean Foraminifera* Ice Sheet North Atlantic |
op_source |
Geographica Helvetica - geography eISSN: 1814-9332 |
op_relation |
doi:10.5194/cpd-8-4885-2012 10670/1.8dtij7 https://cp.copernicus.org/preprints/cp-2012-133/ |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cpd-8-4885-2012 |
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1766336898440101888 |