ACCESS-OM2 v1.0: A global ocean-sea ice model at three resolutions

Andrew E. Kiss; Andrew McC Hogg; Nicholas Hannah; Fabio Boeira Dias; Gary B Brassington; Matthew A. Chamberlain; Christopher Chapman; Peter Dobrohotoff; Catia M. Domingues; Earl R. Duran; Matthew H. England; Russell Fiedler; Stephen M. Griffies; Aidan Heerdegen; Petra Heil; Ryan M. Holmes; Andreas Klocker; Simon J. Marsland; Adele K. Morrison; James Munroe; Maxim Nikurashin; Peter R. Oke; Gabriela S. Pilo; Oceane Richet; Abhishek Savita; Paul Spence; Kial D. Stewart; Marshall L. Ward; Fanghua Wu; Xihan Zhang

doi:10.5194/gmd-13-401-2020

ACCESS-OM2 v1.0: A global ocean-sea ice model at three resolutions

Andrew E. Kiss^*, Andrew McC Hogg, Nicholas Hannah, Fabio Boeira Dias, Gary B Brassington, Matthew A. Chamberlain, Christopher Chapman, Peter Dobrohotoff, Catia M. Domingues, Earl R. Duran, Matthew H. England, Russell Fiedler, Stephen M. Griffies, Aidan Heerdegen, Petra Heil, Ryan M. Holmes, Andreas Klocker, Simon J. Marsland, Adele K. Morrison, James MunroeMaxim Nikurashin, Peter R. Oke, Gabriela S. Pilo, Oceane Richet, Abhishek Savita, Paul Spence, Kial D. Stewart, Marshall L. Ward, Fanghua Wu, Xihan Zhang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

117 Citations (Scopus)

Abstract

We introduce ACCESS-OM2, a new version of the ocean-sea ice model of the Australian Community Climate and Earth System Simulator. ACCESS-OM2 is driven by a prescribed atmosphere (JRA55-do) but has been designed to form the ocean-sea ice component of the fully coupled (atmosphere-land-ocean-sea ice) ACCESS-CM2 model. Importantly, the model is available at three different horizontal resolutions: a coarse resolution (nominally 1ĝ' horizontal grid spacing), an eddy-permitting resolution (nominally 0.25ĝ' ), and an eddy-rich resolution (0.1ĝ' with 75 vertical levels); the eddy-rich model is designed to be incorporated into the Bluelink operational ocean prediction and reanalysis system. The different resolutions have been developed simultaneously, both to allow for testing at lower resolutions and to permit comparison across resolutions. In this paper, the model is introduced and the individual components are documented. The model performance is evaluated across the three different resolutions, highlighting the relative advantages and disadvantages of running ocean-sea ice models at higher resolution. We find that higher resolution is an advantage in resolving flow through small straits, the structure of western boundary currents, and the abyssal overturning cell but that there is scope for improvements in sub-grid-scale parameterizations at the highest resolution.

Original language	English
Pages (from-to)	401-442
Number of pages	42
Journal	Geoscientific Model Development
Volume	13
Issue number	2
DOIs	https://doi.org/10.5194/gmd-13-401-2020
Publication status	Published - 5 Feb 2020

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Kiss, A. E., McC Hogg, A., Hannah, N., Boeira Dias, F., B Brassington, G., Chamberlain, M. A., Chapman, C., Dobrohotoff, P., Domingues, C. M., Duran, E. R., England, M. H., Fiedler, R., Griffies, S. M., Heerdegen, A., Heil, P., Holmes, R. M., Klocker, A., Marsland, S. J., Morrison, A. K., ... Zhang, X. (2020). ACCESS-OM2 v1.0: A global ocean-sea ice model at three resolutions. Geoscientific Model Development, 13(2), 401-442. https://doi.org/10.5194/gmd-13-401-2020

@article{fb00e0b0c80a4883b44fa7372a3579bd,

title = "ACCESS-OM2 v1.0: A global ocean-sea ice model at three resolutions",

abstract = "We introduce ACCESS-OM2, a new version of the ocean-sea ice model of the Australian Community Climate and Earth System Simulator. ACCESS-OM2 is driven by a prescribed atmosphere (JRA55-do) but has been designed to form the ocean-sea ice component of the fully coupled (atmosphere-land-ocean-sea ice) ACCESS-CM2 model. Importantly, the model is available at three different horizontal resolutions: a coarse resolution (nominally 1ĝ' horizontal grid spacing), an eddy-permitting resolution (nominally 0.25ĝ' ), and an eddy-rich resolution (0.1ĝ' with 75 vertical levels); the eddy-rich model is designed to be incorporated into the Bluelink operational ocean prediction and reanalysis system. The different resolutions have been developed simultaneously, both to allow for testing at lower resolutions and to permit comparison across resolutions. In this paper, the model is introduced and the individual components are documented. The model performance is evaluated across the three different resolutions, highlighting the relative advantages and disadvantages of running ocean-sea ice models at higher resolution. We find that higher resolution is an advantage in resolving flow through small straits, the structure of western boundary currents, and the abyssal overturning cell but that there is scope for improvements in sub-grid-scale parameterizations at the highest resolution.",

author = "Kiss, {Andrew E.} and {McC Hogg}, Andrew and Nicholas Hannah and {Boeira Dias}, Fabio and {B Brassington}, Gary and Chamberlain, {Matthew A.} and Christopher Chapman and Peter Dobrohotoff and Domingues, {Catia M.} and Duran, {Earl R.} and England, {Matthew H.} and Russell Fiedler and Griffies, {Stephen M.} and Aidan Heerdegen and Petra Heil and Holmes, {Ryan M.} and Andreas Klocker and Marsland, {Simon J.} and Morrison, {Adele K.} and James Munroe and Maxim Nikurashin and Oke, {Peter R.} and Pilo, {Gabriela S.} and Oceane Richet and Abhishek Savita and Paul Spence and Stewart, {Kial D.} and Ward, {Marshall L.} and Fanghua Wu and Xihan Zhang",

year = "2020",

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Kiss, AE, McC Hogg, A, Hannah, N, Boeira Dias, F, B Brassington, G, Chamberlain, MA, Chapman, C, Dobrohotoff, P, Domingues, CM, Duran, ER, England, MH, Fiedler, R, Griffies, SM, Heerdegen, A, Heil, P, Holmes, RM, Klocker, A, Marsland, SJ, Morrison, AK, Munroe, J, Nikurashin, M, Oke, PR, Pilo, GS, Richet, O, Savita, A, Spence, P, Stewart, KD, Ward, ML, Wu, F & Zhang, X 2020, 'ACCESS-OM2 v1.0: A global ocean-sea ice model at three resolutions', Geoscientific Model Development, vol. 13, no. 2, pp. 401-442. https://doi.org/10.5194/gmd-13-401-2020

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T2 - A global ocean-sea ice model at three resolutions

AU - Kiss, Andrew E.

AU - McC Hogg, Andrew

AU - Hannah, Nicholas

AU - Boeira Dias, Fabio

AU - B Brassington, Gary

AU - Chamberlain, Matthew A.

AU - Chapman, Christopher

AU - Dobrohotoff, Peter

AU - Domingues, Catia M.

AU - Duran, Earl R.

AU - England, Matthew H.

AU - Fiedler, Russell

AU - Griffies, Stephen M.

AU - Heerdegen, Aidan

AU - Heil, Petra

AU - Holmes, Ryan M.

AU - Klocker, Andreas

AU - Marsland, Simon J.

AU - Morrison, Adele K.

AU - Munroe, James

AU - Nikurashin, Maxim

AU - Oke, Peter R.

AU - Pilo, Gabriela S.

AU - Richet, Oceane

AU - Savita, Abhishek

AU - Spence, Paul

AU - Stewart, Kial D.

AU - Ward, Marshall L.

AU - Wu, Fanghua

AU - Zhang, Xihan

PY - 2020/2/5

Y1 - 2020/2/5

N2 - We introduce ACCESS-OM2, a new version of the ocean-sea ice model of the Australian Community Climate and Earth System Simulator. ACCESS-OM2 is driven by a prescribed atmosphere (JRA55-do) but has been designed to form the ocean-sea ice component of the fully coupled (atmosphere-land-ocean-sea ice) ACCESS-CM2 model. Importantly, the model is available at three different horizontal resolutions: a coarse resolution (nominally 1ĝ' horizontal grid spacing), an eddy-permitting resolution (nominally 0.25ĝ' ), and an eddy-rich resolution (0.1ĝ' with 75 vertical levels); the eddy-rich model is designed to be incorporated into the Bluelink operational ocean prediction and reanalysis system. The different resolutions have been developed simultaneously, both to allow for testing at lower resolutions and to permit comparison across resolutions. In this paper, the model is introduced and the individual components are documented. The model performance is evaluated across the three different resolutions, highlighting the relative advantages and disadvantages of running ocean-sea ice models at higher resolution. We find that higher resolution is an advantage in resolving flow through small straits, the structure of western boundary currents, and the abyssal overturning cell but that there is scope for improvements in sub-grid-scale parameterizations at the highest resolution.

AB - We introduce ACCESS-OM2, a new version of the ocean-sea ice model of the Australian Community Climate and Earth System Simulator. ACCESS-OM2 is driven by a prescribed atmosphere (JRA55-do) but has been designed to form the ocean-sea ice component of the fully coupled (atmosphere-land-ocean-sea ice) ACCESS-CM2 model. Importantly, the model is available at three different horizontal resolutions: a coarse resolution (nominally 1ĝ' horizontal grid spacing), an eddy-permitting resolution (nominally 0.25ĝ' ), and an eddy-rich resolution (0.1ĝ' with 75 vertical levels); the eddy-rich model is designed to be incorporated into the Bluelink operational ocean prediction and reanalysis system. The different resolutions have been developed simultaneously, both to allow for testing at lower resolutions and to permit comparison across resolutions. In this paper, the model is introduced and the individual components are documented. The model performance is evaluated across the three different resolutions, highlighting the relative advantages and disadvantages of running ocean-sea ice models at higher resolution. We find that higher resolution is an advantage in resolving flow through small straits, the structure of western boundary currents, and the abyssal overturning cell but that there is scope for improvements in sub-grid-scale parameterizations at the highest resolution.

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U2 - 10.5194/gmd-13-401-2020

DO - 10.5194/gmd-13-401-2020

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EP - 442

JO - Geoscientific Model Development

JF - Geoscientific Model Development

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ER -

ACCESS-OM2 v1.0: A global ocean-sea ice model at three resolutions

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