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| Titel |
Inter-comparison of vertical mixing schemes in a global ocean general circulation model |
| VerfasserIn |
Ho Jin Lee, Sang Yeob Kim, Young Ho Kim |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250140830
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| Publikation (Nr.) |
 EGU/EGU2017-4270.pdf |
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| Zusammenfassung |
| We here investigate the effect of vertical mixing scheme on the oceanic circulation and mixed layer depth in a global ocean modeling. The Ocean General Circulation Model (OGCM) used in this study is the Modular Ocean Model version 5.0 (MOM5.1.0) with 1° horizontal resolution and 52 vertical levels. We compare the three different vertical mixing schemes; K-profile scheme, Noh and Kim scheme and a modified Noh and Kim scheme, which includes the parameterization of the Langmuir circulation. The NCEP reanalysis CORE2-normal year forcing dataset are used to calculate heat, salt and momentum fluxes with a bulk formula at the sea surface. The sea surface salinity is restored to the climatological monthly mean surface salinity of the Polar Science Center Hydrographic Climatology on a 60-day timescale, to make up the fresh water flux at the sea surface. Three models with different vertical mixing schemes are integrated during 150 years.
A series of numerical experiments with different vertical mixing schemes shows significant differences in the mixed layer depths at the high-latitude region, especially in the Southern Ocean, as well as the strength of meridional overturning circulation and heat transport. |
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