GO5.0: The joint NERC-Met Office NEMO global ocean model for use in coupled and forced applications
GO5.0: The joint NERC-Met Office NEMO global ocean model for use in coupled and forced applications
We describe a new Global Ocean standard configuration (GO5.0) at eddy-permitting resolution, developed jointly between the National Oceanography Centre and the Met Office as part of the Joint Ocean Modelling Programme (JOMP), a working group of the UK's National Centre for Ocean Forecasting (NCOF) and part of the Joint Weather and Climate Research Programme (JWCRP). The configuration has been developed with the seamless approach to modelling in mind for ocean modelling across timescales and for a range of applications, from short-range ocean forecasting through seasonal forecasting to climate predictions as well as research use. The configuration has been coupled with sea ice (GSI5.0), atmosphere (GA5.0), and land-surface (GL5.0) configurations to form a standard coupled global model (GC1). The GO5.0 model will become the basis for the ocean model component of the Forecasting Ocean Assimilation Model, which provides forced short-range forecasting services. The GC1 or future releases of it will be used in coupled short-range ocean forecasting, seasonal forecasting, decadal prediction and for climate prediction as part of the UK Earth System Model.
A 30-year integration of GO5.0, run with CORE2 (Common Ocean-ice Reference Experiments) surface forcing from 1976 to 2005, is described, and the performance of the model in the final 10 years of the integration is evaluated against observations and against a comparable integration of an existing standard configuration, GO1. An additional set of 10-year sensitivity studies, carried out to attribute changes in the model performance to individual changes in the model physics, is also analysed. GO5.0 is found to have substantially reduced subsurface drift above the depth of the thermocline relative to GO1, and also shows a significant improvement in the representation of the annual cycle of surface temperature and mixed layer depth.
1069-1092
Megann, A.
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Storkey, D.
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Aksenov, Y.
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Alderson, S.
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Calvert, D.
87d17513-16a2-4375-a009-a8e2d50519bf
Graham, T.
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Hyder, P.
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Siddorn, J.
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Sinha, B.
544b5a07-3d74-464b-9470-a68c69bd722e
6 June 2014
Megann, A.
4fd92e77-5512-487d-bb28-8476afafdeaf
Storkey, D.
a3a457fc-a4c1-4995-bc6f-266117a33847
Aksenov, Y.
1d277047-06f6-4893-8bcf-c2817a9c848e
Alderson, S.
00ee9859-a11f-4040-a963-d88d4ae2740d
Calvert, D.
87d17513-16a2-4375-a009-a8e2d50519bf
Graham, T.
3c60e413-d4c6-4848-b1fa-b8fd0ca75740
Hyder, P.
28546840-d4d6-44a7-b3b8-19252bb3cc63
Siddorn, J.
5f776e6e-3787-4da4-8d04-90425e2b885e
Sinha, B.
544b5a07-3d74-464b-9470-a68c69bd722e
Megann, A., Storkey, D., Aksenov, Y., Alderson, S., Calvert, D., Graham, T., Hyder, P., Siddorn, J. and Sinha, B.
(2014)
GO5.0: The joint NERC-Met Office NEMO global ocean model for use in coupled and forced applications.
Geoscientific Model Development, 7 (3), .
(doi:10.5194/gmd-7-1069-2014).
Abstract
We describe a new Global Ocean standard configuration (GO5.0) at eddy-permitting resolution, developed jointly between the National Oceanography Centre and the Met Office as part of the Joint Ocean Modelling Programme (JOMP), a working group of the UK's National Centre for Ocean Forecasting (NCOF) and part of the Joint Weather and Climate Research Programme (JWCRP). The configuration has been developed with the seamless approach to modelling in mind for ocean modelling across timescales and for a range of applications, from short-range ocean forecasting through seasonal forecasting to climate predictions as well as research use. The configuration has been coupled with sea ice (GSI5.0), atmosphere (GA5.0), and land-surface (GL5.0) configurations to form a standard coupled global model (GC1). The GO5.0 model will become the basis for the ocean model component of the Forecasting Ocean Assimilation Model, which provides forced short-range forecasting services. The GC1 or future releases of it will be used in coupled short-range ocean forecasting, seasonal forecasting, decadal prediction and for climate prediction as part of the UK Earth System Model.
A 30-year integration of GO5.0, run with CORE2 (Common Ocean-ice Reference Experiments) surface forcing from 1976 to 2005, is described, and the performance of the model in the final 10 years of the integration is evaluated against observations and against a comparable integration of an existing standard configuration, GO1. An additional set of 10-year sensitivity studies, carried out to attribute changes in the model performance to individual changes in the model physics, is also analysed. GO5.0 is found to have substantially reduced subsurface drift above the depth of the thermocline relative to GO1, and also shows a significant improvement in the representation of the annual cycle of surface temperature and mixed layer depth.
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Accepted/In Press date: 26 November 2013
Published date: 6 June 2014
Organisations:
Marine Systems Modelling
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Local EPrints ID: 362936
URI: http://eprints.soton.ac.uk/id/eprint/362936
ISSN: 1991-9603
PURE UUID: 8e4f381f-2f38-4c0a-a849-4d7428874056
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Date deposited: 10 Mar 2014 11:34
Last modified: 14 Mar 2024 16:16
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Author:
A. Megann
Author:
D. Storkey
Author:
Y. Aksenov
Author:
S. Alderson
Author:
D. Calvert
Author:
T. Graham
Author:
P. Hyder
Author:
J. Siddorn
Author:
B. Sinha
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