The Whole Antarctic Ocean Model (WAOM v1.0): Development and evaluation

The Regional Ocean Modeling System (ROMS), including an ice shelf component, has been applied on a circum-Antarctic domain to derive estimates of ice shelf basal melting. Significant improvements made compared to previous models of this scale are the inclusion of tides and a horizontal spatial resol...

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Published in:Geoscientific Model Development
Main Authors: Richter, Ole, Gwyther, David E., Galton-Fenzi, Benjamin K., Naughten, Kaitlin A.
Format: Article in Journal/Newspaper
Language:English
Published: European Geosciences Union 2022
Subjects:
Online Access:http://nora.nerc.ac.uk/id/eprint/528012/
https://nora.nerc.ac.uk/id/eprint/528012/1/gmd-15-617-2022.pdf
https://gmd.copernicus.org/articles/15/617/2022/gmd-15-617-2022.html
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spelling ftnerc:oai:nora.nerc.ac.uk:528012 2023-05-15T13:41:45+02:00 The Whole Antarctic Ocean Model (WAOM v1.0): Development and evaluation Richter, Ole Gwyther, David E. Galton-Fenzi, Benjamin K. Naughten, Kaitlin A. 2022-01-26 text http://nora.nerc.ac.uk/id/eprint/528012/ https://nora.nerc.ac.uk/id/eprint/528012/1/gmd-15-617-2022.pdf https://gmd.copernicus.org/articles/15/617/2022/gmd-15-617-2022.html en eng European Geosciences Union https://nora.nerc.ac.uk/id/eprint/528012/1/gmd-15-617-2022.pdf Richter, Ole; Gwyther, David E.; Galton-Fenzi, Benjamin K.; Naughten, Kaitlin A. orcid:0000-0001-9475-9162 . 2022 The Whole Antarctic Ocean Model (WAOM v1.0): Development and evaluation. Geoscientific Model Development, 15. 617-647. https://doi.org/10.5194/gmd-15-617-2022 <https://doi.org/10.5194/gmd-15-617-2022> cc_by_4 CC-BY Publication - Article PeerReviewed 2022 ftnerc https://doi.org/10.5194/gmd-15-617-2022 2023-02-04T19:50:51Z The Regional Ocean Modeling System (ROMS), including an ice shelf component, has been applied on a circum-Antarctic domain to derive estimates of ice shelf basal melting. Significant improvements made compared to previous models of this scale are the inclusion of tides and a horizontal spatial resolution of 2 km, which is sufficient to resolve on-shelf heat transport by bathymetric troughs and eddy-scale circulation. We run the model with ocean–atmosphere–sea ice conditions from the year 2007 to represent nominal present-day climate. We force the ocean surface with buoyancy fluxes derived from sea ice concentration observations and wind stress from ERA-Interim atmospheric reanalysis. Boundary conditions are derived from the ECCO2 ocean state estimate; tides are incorporated as sea surface height and barotropic currents at the open boundary. We evaluate model results using satellite-derived estimates of ice shelf melting and established compilations of ocean hydrography. The Whole Antarctic Ocean Model (WAOM v1.0) qualitatively captures the broad scale difference between warm and cold regimes as well as many of the known characteristics of regional ice–ocean interaction. We identify a cold bias for some warm-water ice shelves and a lack of high-salinity shelf water (HSSW) formation. We conclude that further calibration and development of our approach are justified. At its current state, the model is ideal for addressing specific, process-oriented questions, e.g. related to tide-driven ice shelf melting at large scales. Article in Journal/Newspaper Antarc* Antarctic Antarctic Ocean Ice Shelf Ice Shelves Sea ice Natural Environment Research Council: NERC Open Research Archive Antarctic Antarctic Ocean Geoscientific Model Development 15 2 617 647
institution Open Polar
collection Natural Environment Research Council: NERC Open Research Archive
op_collection_id ftnerc
language English
description The Regional Ocean Modeling System (ROMS), including an ice shelf component, has been applied on a circum-Antarctic domain to derive estimates of ice shelf basal melting. Significant improvements made compared to previous models of this scale are the inclusion of tides and a horizontal spatial resolution of 2 km, which is sufficient to resolve on-shelf heat transport by bathymetric troughs and eddy-scale circulation. We run the model with ocean–atmosphere–sea ice conditions from the year 2007 to represent nominal present-day climate. We force the ocean surface with buoyancy fluxes derived from sea ice concentration observations and wind stress from ERA-Interim atmospheric reanalysis. Boundary conditions are derived from the ECCO2 ocean state estimate; tides are incorporated as sea surface height and barotropic currents at the open boundary. We evaluate model results using satellite-derived estimates of ice shelf melting and established compilations of ocean hydrography. The Whole Antarctic Ocean Model (WAOM v1.0) qualitatively captures the broad scale difference between warm and cold regimes as well as many of the known characteristics of regional ice–ocean interaction. We identify a cold bias for some warm-water ice shelves and a lack of high-salinity shelf water (HSSW) formation. We conclude that further calibration and development of our approach are justified. At its current state, the model is ideal for addressing specific, process-oriented questions, e.g. related to tide-driven ice shelf melting at large scales.
format Article in Journal/Newspaper
author Richter, Ole
Gwyther, David E.
Galton-Fenzi, Benjamin K.
Naughten, Kaitlin A.
spellingShingle Richter, Ole
Gwyther, David E.
Galton-Fenzi, Benjamin K.
Naughten, Kaitlin A.
The Whole Antarctic Ocean Model (WAOM v1.0): Development and evaluation
author_facet Richter, Ole
Gwyther, David E.
Galton-Fenzi, Benjamin K.
Naughten, Kaitlin A.
author_sort Richter, Ole
title The Whole Antarctic Ocean Model (WAOM v1.0): Development and evaluation
title_short The Whole Antarctic Ocean Model (WAOM v1.0): Development and evaluation
title_full The Whole Antarctic Ocean Model (WAOM v1.0): Development and evaluation
title_fullStr The Whole Antarctic Ocean Model (WAOM v1.0): Development and evaluation
title_full_unstemmed The Whole Antarctic Ocean Model (WAOM v1.0): Development and evaluation
title_sort whole antarctic ocean model (waom v1.0): development and evaluation
publisher European Geosciences Union
publishDate 2022
url http://nora.nerc.ac.uk/id/eprint/528012/
https://nora.nerc.ac.uk/id/eprint/528012/1/gmd-15-617-2022.pdf
https://gmd.copernicus.org/articles/15/617/2022/gmd-15-617-2022.html
geographic Antarctic
Antarctic Ocean
geographic_facet Antarctic
Antarctic Ocean
genre Antarc*
Antarctic
Antarctic Ocean
Ice Shelf
Ice Shelves
Sea ice
genre_facet Antarc*
Antarctic
Antarctic Ocean
Ice Shelf
Ice Shelves
Sea ice
op_relation https://nora.nerc.ac.uk/id/eprint/528012/1/gmd-15-617-2022.pdf
Richter, Ole; Gwyther, David E.; Galton-Fenzi, Benjamin K.; Naughten, Kaitlin A. orcid:0000-0001-9475-9162 . 2022 The Whole Antarctic Ocean Model (WAOM v1.0): Development and evaluation. Geoscientific Model Development, 15. 617-647. https://doi.org/10.5194/gmd-15-617-2022 <https://doi.org/10.5194/gmd-15-617-2022>
op_rights cc_by_4
op_rightsnorm CC-BY
op_doi https://doi.org/10.5194/gmd-15-617-2022
container_title Geoscientific Model Development
container_volume 15
container_issue 2
container_start_page 617
op_container_end_page 647
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