Glacial–interglacial changes in H218O, HDO and deuterium excess – results from the fully coupled ECHAM5/MPI-OM Earth system model
In this study we present the first results of a new isotope-enabled general circulation model set-up. The model consists of the fully coupled ECHAM5/MPI-OM atmosphere–ocean model, enhanced by the JSBACH interactive land surface scheme and an explicit hydrological discharge scheme to close the global...
Published in: | Geoscientific Model Development |
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Online Access: | https://epic.awi.de/id/eprint/39802/ https://epic.awi.de/id/eprint/39802/1/Werner_GMD_2016.pdf https://doi.org/10.5194/gmd-9-647-2016 https://hdl.handle.net/10013/epic.46924 https://hdl.handle.net/10013/epic.46924.d001 |
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ftawi:oai:epic.awi.de:39802 2024-09-15T17:43:30+00:00 Glacial–interglacial changes in H218O, HDO and deuterium excess – results from the fully coupled ECHAM5/MPI-OM Earth system model Werner, Martin Haese, Barbara Xu, Xu Zhang, Xu Butzin, Martin Lohmann, Gerrit 2016 application/pdf https://epic.awi.de/id/eprint/39802/ https://epic.awi.de/id/eprint/39802/1/Werner_GMD_2016.pdf https://doi.org/10.5194/gmd-9-647-2016 https://hdl.handle.net/10013/epic.46924 https://hdl.handle.net/10013/epic.46924.d001 unknown https://epic.awi.de/id/eprint/39802/1/Werner_GMD_2016.pdf https://hdl.handle.net/10013/epic.46924.d001 Werner, M. orcid:0000-0002-6473-0243 , Haese, B. , Xu, X. , Zhang, X. orcid:0000-0003-1833-9689 , Butzin, M. orcid:0000-0002-9275-7304 and Lohmann, G. orcid:0000-0003-2089-733X (2016) Glacial–interglacial changes in H218O, HDO and deuterium excess – results from the fully coupled ECHAM5/MPI-OM Earth system model , Geoscientific Model Development, 9 (2), pp. 647-670 . doi:10.5194/gmd-9-647-2016 <https://doi.org/10.5194/gmd-9-647-2016> , hdl:10013/epic.46924 EPIC3Geoscientific Model Development, 9(2), pp. 647-670, ISSN: 1991-9603 Article isiRev 2016 ftawi https://doi.org/10.5194/gmd-9-647-2016 2024-06-24T04:13:16Z In this study we present the first results of a new isotope-enabled general circulation model set-up. The model consists of the fully coupled ECHAM5/MPI-OM atmosphere–ocean model, enhanced by the JSBACH interactive land surface scheme and an explicit hydrological discharge scheme to close the global water budget. Stable water isotopes H218O and HDO have been incorporated into all relevant model components. Results of two equilibrium simulations under pre-industrial and Last Glacial Maximum conditions are analysed and compared to observational data and paleoclimate records for evaluating the model’s performance in simulating spatial and temporal variations in the isotopic composition of the Earth’s water cycle. For the pre-industrial climate, many aspects of the simulation results of meteoric waters are in good to very good agreement with both observations and earlier atmosphere-only simulations. The model is capable of adequately simulating the large spread in the isotopic composition of precipitation between low and high latitudes. A comparison to available ocean data also shows a good model–data agreement; however, a strong bias of overly depleted ocean surface waters is detected for the Arctic region. Simulation results under Last Glacial Maximum boundary conditions also fit to the wealth of available isotope records from polar ice cores, speleothems, as well as marine calcite data. Data–model evaluation of the isotopic composition in precipitation reveals a good match of the model results and indicates that the temporal glacial–interglacial isotope– temperature relation was substantially lower than the present spatial gradient for most mid- to high-latitudinal regions. As compared to older atmosphere-only simulations, a remarkable improvement is achieved for the modelling of the deuterium excess signal in Antarctic ice cores. Our simulation results indicate that cool sub-tropical and mid-latitudinal sea surface temperatures are key for this progress. A recently discussed revised interpretation of the ... Article in Journal/Newspaper Antarc* Antarctic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Geoscientific Model Development 9 2 647 670 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
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unknown |
description |
In this study we present the first results of a new isotope-enabled general circulation model set-up. The model consists of the fully coupled ECHAM5/MPI-OM atmosphere–ocean model, enhanced by the JSBACH interactive land surface scheme and an explicit hydrological discharge scheme to close the global water budget. Stable water isotopes H218O and HDO have been incorporated into all relevant model components. Results of two equilibrium simulations under pre-industrial and Last Glacial Maximum conditions are analysed and compared to observational data and paleoclimate records for evaluating the model’s performance in simulating spatial and temporal variations in the isotopic composition of the Earth’s water cycle. For the pre-industrial climate, many aspects of the simulation results of meteoric waters are in good to very good agreement with both observations and earlier atmosphere-only simulations. The model is capable of adequately simulating the large spread in the isotopic composition of precipitation between low and high latitudes. A comparison to available ocean data also shows a good model–data agreement; however, a strong bias of overly depleted ocean surface waters is detected for the Arctic region. Simulation results under Last Glacial Maximum boundary conditions also fit to the wealth of available isotope records from polar ice cores, speleothems, as well as marine calcite data. Data–model evaluation of the isotopic composition in precipitation reveals a good match of the model results and indicates that the temporal glacial–interglacial isotope– temperature relation was substantially lower than the present spatial gradient for most mid- to high-latitudinal regions. As compared to older atmosphere-only simulations, a remarkable improvement is achieved for the modelling of the deuterium excess signal in Antarctic ice cores. Our simulation results indicate that cool sub-tropical and mid-latitudinal sea surface temperatures are key for this progress. A recently discussed revised interpretation of the ... |
format |
Article in Journal/Newspaper |
author |
Werner, Martin Haese, Barbara Xu, Xu Zhang, Xu Butzin, Martin Lohmann, Gerrit |
spellingShingle |
Werner, Martin Haese, Barbara Xu, Xu Zhang, Xu Butzin, Martin Lohmann, Gerrit Glacial–interglacial changes in H218O, HDO and deuterium excess – results from the fully coupled ECHAM5/MPI-OM Earth system model |
author_facet |
Werner, Martin Haese, Barbara Xu, Xu Zhang, Xu Butzin, Martin Lohmann, Gerrit |
author_sort |
Werner, Martin |
title |
Glacial–interglacial changes in H218O, HDO and deuterium excess – results from the fully coupled ECHAM5/MPI-OM Earth system model |
title_short |
Glacial–interglacial changes in H218O, HDO and deuterium excess – results from the fully coupled ECHAM5/MPI-OM Earth system model |
title_full |
Glacial–interglacial changes in H218O, HDO and deuterium excess – results from the fully coupled ECHAM5/MPI-OM Earth system model |
title_fullStr |
Glacial–interglacial changes in H218O, HDO and deuterium excess – results from the fully coupled ECHAM5/MPI-OM Earth system model |
title_full_unstemmed |
Glacial–interglacial changes in H218O, HDO and deuterium excess – results from the fully coupled ECHAM5/MPI-OM Earth system model |
title_sort |
glacial–interglacial changes in h218o, hdo and deuterium excess – results from the fully coupled echam5/mpi-om earth system model |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/39802/ https://epic.awi.de/id/eprint/39802/1/Werner_GMD_2016.pdf https://doi.org/10.5194/gmd-9-647-2016 https://hdl.handle.net/10013/epic.46924 https://hdl.handle.net/10013/epic.46924.d001 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
EPIC3Geoscientific Model Development, 9(2), pp. 647-670, ISSN: 1991-9603 |
op_relation |
https://epic.awi.de/id/eprint/39802/1/Werner_GMD_2016.pdf https://hdl.handle.net/10013/epic.46924.d001 Werner, M. orcid:0000-0002-6473-0243 , Haese, B. , Xu, X. , Zhang, X. orcid:0000-0003-1833-9689 , Butzin, M. orcid:0000-0002-9275-7304 and Lohmann, G. orcid:0000-0003-2089-733X (2016) Glacial–interglacial changes in H218O, HDO and deuterium excess – results from the fully coupled ECHAM5/MPI-OM Earth system model , Geoscientific Model Development, 9 (2), pp. 647-670 . doi:10.5194/gmd-9-647-2016 <https://doi.org/10.5194/gmd-9-647-2016> , hdl:10013/epic.46924 |
op_doi |
https://doi.org/10.5194/gmd-9-647-2016 |
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Geoscientific Model Development |
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