Water isotope variations in the global ocean model MPI-OM
The stable water isotopes H 2 18 O and HDO are incorporated as passive tracers into the oceanic general circulation model MPI-OM, and a control simulation under present-day climate conditions is analyzed in detail. Both δ 18 O and δD distributions at the ocean surface and deep ocean are generally co...
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ftdoajarticles:oai:doaj.org/article:87eba57ba4e548e2a2617a85e2a9208d 2023-05-15T15:05:40+02:00 Water isotope variations in the global ocean model MPI-OM X. Xu M. Werner M. Butzin G. Lohmann 2012-06-01T00:00:00Z https://doi.org/10.5194/gmd-5-809-2012 https://doaj.org/article/87eba57ba4e548e2a2617a85e2a9208d EN eng Copernicus Publications http://www.geosci-model-dev.net/5/809/2012/gmd-5-809-2012.pdf https://doaj.org/toc/1991-959X https://doaj.org/toc/1991-9603 doi:10.5194/gmd-5-809-2012 1991-959X 1991-9603 https://doaj.org/article/87eba57ba4e548e2a2617a85e2a9208d Geoscientific Model Development, Vol 5, Iss 3, Pp 809-818 (2012) Geology QE1-996.5 article 2012 ftdoajarticles https://doi.org/10.5194/gmd-5-809-2012 2022-12-31T11:17:16Z The stable water isotopes H 2 18 O and HDO are incorporated as passive tracers into the oceanic general circulation model MPI-OM, and a control simulation under present-day climate conditions is analyzed in detail. Both δ 18 O and δD distributions at the ocean surface and deep ocean are generally consistent with available observations on the large scale. The modelled δD-δ 18 O relations in surface waters slightly deviates from the slope of the global meteoric water line in most basins, and a much steeper slope is detected in Arctic Oceans. The simulated deuterium excess of ocean surface waters shows small variations between 80° S and 55° N, and a strong decrease north of 55° N. The model is also able to capture the quasi-linear relationship between δ 18 O and salinity S , as well as δD and S , as seen in observational data. Both in the model results and observations, the surface δ− S relations show a steeper slope in extra-tropical regions than in tropical regions, which indicates relatively more addition of isotopically depleted water at high latitudes. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Geoscientific Model Development 5 3 809 818 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geology QE1-996.5 |
spellingShingle |
Geology QE1-996.5 X. Xu M. Werner M. Butzin G. Lohmann Water isotope variations in the global ocean model MPI-OM |
topic_facet |
Geology QE1-996.5 |
description |
The stable water isotopes H 2 18 O and HDO are incorporated as passive tracers into the oceanic general circulation model MPI-OM, and a control simulation under present-day climate conditions is analyzed in detail. Both δ 18 O and δD distributions at the ocean surface and deep ocean are generally consistent with available observations on the large scale. The modelled δD-δ 18 O relations in surface waters slightly deviates from the slope of the global meteoric water line in most basins, and a much steeper slope is detected in Arctic Oceans. The simulated deuterium excess of ocean surface waters shows small variations between 80° S and 55° N, and a strong decrease north of 55° N. The model is also able to capture the quasi-linear relationship between δ 18 O and salinity S , as well as δD and S , as seen in observational data. Both in the model results and observations, the surface δ− S relations show a steeper slope in extra-tropical regions than in tropical regions, which indicates relatively more addition of isotopically depleted water at high latitudes. |
format |
Article in Journal/Newspaper |
author |
X. Xu M. Werner M. Butzin G. Lohmann |
author_facet |
X. Xu M. Werner M. Butzin G. Lohmann |
author_sort |
X. Xu |
title |
Water isotope variations in the global ocean model MPI-OM |
title_short |
Water isotope variations in the global ocean model MPI-OM |
title_full |
Water isotope variations in the global ocean model MPI-OM |
title_fullStr |
Water isotope variations in the global ocean model MPI-OM |
title_full_unstemmed |
Water isotope variations in the global ocean model MPI-OM |
title_sort |
water isotope variations in the global ocean model mpi-om |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/gmd-5-809-2012 https://doaj.org/article/87eba57ba4e548e2a2617a85e2a9208d |
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Arctic |
geographic_facet |
Arctic |
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Arctic |
genre_facet |
Arctic |
op_source |
Geoscientific Model Development, Vol 5, Iss 3, Pp 809-818 (2012) |
op_relation |
http://www.geosci-model-dev.net/5/809/2012/gmd-5-809-2012.pdf https://doaj.org/toc/1991-959X https://doaj.org/toc/1991-9603 doi:10.5194/gmd-5-809-2012 1991-959X 1991-9603 https://doaj.org/article/87eba57ba4e548e2a2617a85e2a9208d |
op_doi |
https://doi.org/10.5194/gmd-5-809-2012 |
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Geoscientific Model Development |
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5 |
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