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| Kurahashi-nakamura, Takasumi; Paul, Andre; Munhoven, Guy; Merkel, Ute; Schulz, Michael. |
| We developed a coupling scheme for the Community Earth System Model version 1.2 (CESM1.2) and the Model of Early Diagenesis in the Upper Sediment of Adjustable complexity (MEDUSA), and explored the effects of the coupling on solid components in the upper sediment and on bottom seawater chemistry by comparing the coupled model's behaviour with that of the uncoupled CESM having a simplified treatment of sediment processes. CESM is a fully coupled atmosphere-ocean-sea-ice-land model and its ocean component (the Parallel Ocean Program version 2; POP2) includes a biogeochemical component (the Biogeochemical Elemental Cycling model; BEC). MEDUSA was coupled to POP2 in an offline manner so that each of the models ran separately and sequentially with regular... |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00676/78790/81068.pdf |
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| Voelpel, Rike; Paul, Andre; Krandick, Annegret; Mulitza, Stefan; Schulz, Michael. |
| We present the first results of the implementation of stable water isotopes in the Massachusetts Institute of Technology general circulation model (MITgcm). The model is forced with the isotopic content of precipitation and water vapor from an atmospheric general circulation model (NCAR IsoCAM), while the fractionation during evaporation is treated explicitly in the MITgcm. Results of the equilibrium simulation under pre-industrial conditions are compared to observational data and measurements of plankton tow records (the oxygen isotopic composition of planktic foraminiferal calcite). The broad patterns and magnitude of the stable water isotopes in annual mean seawater are well captured in the model, both at the sea surface as well as in the deep ocean.... |
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| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00662/77396/79002.pdf |
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