Impact of ocean resolution on coupled air-sea fluxes and large-scale climate
Impact of ocean resolution on coupled air-sea fluxes and large-scale climate
Air-sea fluxes are a crucial component in the energetics of the global climate system. The largest air-sea fluxes occur in regions of high sea surface temperature variability, such as ocean boundary, frontal currents and eddies. In this paper we explore the importance of ocean model resolution to resolve air-sea flux relationships in these areas. We examine the sea surface temperature-wind stress relationship in high-pass filtered observations and two versions of the Met Office climate model with eddy-permitting and eddy-resolving ocean resolutions. Eddy-resolving resolution shows marginal improvement in the relationship over eddy-permitting resolution. However, by focussing on the North Atlantic we show that the eddy-resolving model has significant enhancement of latent heat loss over the North Atlantic Current region, a long-standing model bias. While eddy-resolving resolution does not change the air-sea flux relationship at small scale, the impact on the mean state has important implications for the reliability of future climate projections.
resolution, eddy-resolving, air-sea flux, coupled model
10,430-10,438
Roberts, Malcolm J.
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Hewitt, Helene T.
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Hyder, Pat
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Ferreira, David
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Josey, Simon A.
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Mizielinski, Matthew
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Shelly, Ann
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16 October 2016
Roberts, Malcolm J.
5577a257-2416-4760-b72a-711f3a2dee84
Hewitt, Helene T.
c6c30d10-905e-4fdb-a021-37f63c5e92a4
Hyder, Pat
3ecf7b44-00f5-4b4d-b689-71aab9907d98
Ferreira, David
47a79187-501a-4689-af4e-fc67ddc40c9a
Josey, Simon A.
2252ab7f-5cd2-49fd-a951-aece44553d93
Mizielinski, Matthew
86b72978-dd38-4af8-9279-32a7293952f2
Shelly, Ann
2e1429b5-60b7-452b-bec9-4c076d988924
Roberts, Malcolm J., Hewitt, Helene T., Hyder, Pat, Ferreira, David, Josey, Simon A., Mizielinski, Matthew and Shelly, Ann
(2016)
Impact of ocean resolution on coupled air-sea fluxes and large-scale climate.
Geophysical Research Letters, 43 (19), .
(doi:10.1002/2016GL070559).
Abstract
Air-sea fluxes are a crucial component in the energetics of the global climate system. The largest air-sea fluxes occur in regions of high sea surface temperature variability, such as ocean boundary, frontal currents and eddies. In this paper we explore the importance of ocean model resolution to resolve air-sea flux relationships in these areas. We examine the sea surface temperature-wind stress relationship in high-pass filtered observations and two versions of the Met Office climate model with eddy-permitting and eddy-resolving ocean resolutions. Eddy-resolving resolution shows marginal improvement in the relationship over eddy-permitting resolution. However, by focussing on the North Atlantic we show that the eddy-resolving model has significant enhancement of latent heat loss over the North Atlantic Current region, a long-standing model bias. While eddy-resolving resolution does not change the air-sea flux relationship at small scale, the impact on the mean state has important implications for the reliability of future climate projections.
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Accepted/In Press date: 9 September 2016
e-pub ahead of print date: 13 October 2016
Published date: 16 October 2016
Keywords:
resolution, eddy-resolving, air-sea flux, coupled model
Organisations:
Marine Systems Modelling
Identifiers
Local EPrints ID: 403852
URI: http://eprints.soton.ac.uk/id/eprint/403852
ISSN: 0094-8276
PURE UUID: f15ba1a3-6672-4a62-b2df-f824e25ee508
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Date deposited: 13 Dec 2016 16:33
Last modified: 15 Mar 2024 06:09
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Contributors
Author:
Malcolm J. Roberts
Author:
Helene T. Hewitt
Author:
Pat Hyder
Author:
David Ferreira
Author:
Simon A. Josey
Author:
Matthew Mizielinski
Author:
Ann Shelly
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