Barotropic tides in MPAS-Ocean (E3SM V2): impact of ice shelf cavities
Oceanic tides are seldom represented in Earth system models (ESMs) owing to the need for high horizontal resolution to accurately represent the associated barotropic waves close to coasts. This paper presents results of tides implemented in the Model for Prediction Across Scales–Ocean or MPAS-Ocean,...
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ftdoajarticles:oai:doaj.org/article:87c432b91fd24940b4a415d87d8271d3 2023-05-15T13:56:54+02:00 Barotropic tides in MPAS-Ocean (E3SM V2): impact of ice shelf cavities N. Pal K. N. Barton M. R. Petersen S. R. Brus D. Engwirda B. K. Arbic A. F. Roberts J. J. Westerink D. Wirasaet 2023-02-01T00:00:00Z https://doi.org/10.5194/gmd-16-1297-2023 https://doaj.org/article/87c432b91fd24940b4a415d87d8271d3 EN eng Copernicus Publications https://gmd.copernicus.org/articles/16/1297/2023/gmd-16-1297-2023.pdf https://doaj.org/toc/1991-959X https://doaj.org/toc/1991-9603 doi:10.5194/gmd-16-1297-2023 1991-959X 1991-9603 https://doaj.org/article/87c432b91fd24940b4a415d87d8271d3 Geoscientific Model Development, Vol 16, Pp 1297-1314 (2023) Geology QE1-996.5 article 2023 ftdoajarticles https://doi.org/10.5194/gmd-16-1297-2023 2023-02-26T01:33:42Z Oceanic tides are seldom represented in Earth system models (ESMs) owing to the need for high horizontal resolution to accurately represent the associated barotropic waves close to coasts. This paper presents results of tides implemented in the Model for Prediction Across Scales–Ocean or MPAS-Ocean, which is the ocean component within the U.S. Department of Energy developed Energy Exascale Earth System Model (E3SM). MPAS-Ocean circumvents the limitation of low resolution using unstructured global meshing. We are at this stage simulating the largest semidiurnal ( M 2 , S 2 , N 2 ) and diurnal ( K 1 , O 1 ) tidal constituents in a single-layer version of MPAS-O. First, we show that the tidal constituents calculated using MPAS-Ocean closely agree with the results of the global tidal prediction model TPXO8 when suitably tuned topographic wave drag and bottom drag coefficients are employed. Thereafter, we present the sensitivity of global tidal evolution due to the presence of Antarctic ice shelf cavities. The effect of ice shelves on the amplitude and phase of tidal constituents are presented. Lower values of complex errors (with respect to TPXO8 results) for the M 2 tidal constituents are observed when the ice shelf is added in the simulations, with particularly strong improvement in the Southern Ocean. Our work points towards future research with varying Antarctic ice shelf geometries and sea ice coupling that might lead to better comparison and prediction of tides and thus better prediction of sea-level rise and also the future climate variability. Article in Journal/Newspaper Antarc* Antarctic Ice Shelf Ice Shelves Sea ice Southern Ocean Directory of Open Access Journals: DOAJ Articles Antarctic Southern Ocean Geoscientific Model Development 16 4 1297 1314 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geology QE1-996.5 |
spellingShingle |
Geology QE1-996.5 N. Pal K. N. Barton M. R. Petersen S. R. Brus D. Engwirda B. K. Arbic A. F. Roberts J. J. Westerink D. Wirasaet Barotropic tides in MPAS-Ocean (E3SM V2): impact of ice shelf cavities |
topic_facet |
Geology QE1-996.5 |
description |
Oceanic tides are seldom represented in Earth system models (ESMs) owing to the need for high horizontal resolution to accurately represent the associated barotropic waves close to coasts. This paper presents results of tides implemented in the Model for Prediction Across Scales–Ocean or MPAS-Ocean, which is the ocean component within the U.S. Department of Energy developed Energy Exascale Earth System Model (E3SM). MPAS-Ocean circumvents the limitation of low resolution using unstructured global meshing. We are at this stage simulating the largest semidiurnal ( M 2 , S 2 , N 2 ) and diurnal ( K 1 , O 1 ) tidal constituents in a single-layer version of MPAS-O. First, we show that the tidal constituents calculated using MPAS-Ocean closely agree with the results of the global tidal prediction model TPXO8 when suitably tuned topographic wave drag and bottom drag coefficients are employed. Thereafter, we present the sensitivity of global tidal evolution due to the presence of Antarctic ice shelf cavities. The effect of ice shelves on the amplitude and phase of tidal constituents are presented. Lower values of complex errors (with respect to TPXO8 results) for the M 2 tidal constituents are observed when the ice shelf is added in the simulations, with particularly strong improvement in the Southern Ocean. Our work points towards future research with varying Antarctic ice shelf geometries and sea ice coupling that might lead to better comparison and prediction of tides and thus better prediction of sea-level rise and also the future climate variability. |
format |
Article in Journal/Newspaper |
author |
N. Pal K. N. Barton M. R. Petersen S. R. Brus D. Engwirda B. K. Arbic A. F. Roberts J. J. Westerink D. Wirasaet |
author_facet |
N. Pal K. N. Barton M. R. Petersen S. R. Brus D. Engwirda B. K. Arbic A. F. Roberts J. J. Westerink D. Wirasaet |
author_sort |
N. Pal |
title |
Barotropic tides in MPAS-Ocean (E3SM V2): impact of ice shelf cavities |
title_short |
Barotropic tides in MPAS-Ocean (E3SM V2): impact of ice shelf cavities |
title_full |
Barotropic tides in MPAS-Ocean (E3SM V2): impact of ice shelf cavities |
title_fullStr |
Barotropic tides in MPAS-Ocean (E3SM V2): impact of ice shelf cavities |
title_full_unstemmed |
Barotropic tides in MPAS-Ocean (E3SM V2): impact of ice shelf cavities |
title_sort |
barotropic tides in mpas-ocean (e3sm v2): impact of ice shelf cavities |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/gmd-16-1297-2023 https://doaj.org/article/87c432b91fd24940b4a415d87d8271d3 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Ice Shelf Ice Shelves Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Ice Shelf Ice Shelves Sea ice Southern Ocean |
op_source |
Geoscientific Model Development, Vol 16, Pp 1297-1314 (2023) |
op_relation |
https://gmd.copernicus.org/articles/16/1297/2023/gmd-16-1297-2023.pdf https://doaj.org/toc/1991-959X https://doaj.org/toc/1991-9603 doi:10.5194/gmd-16-1297-2023 1991-959X 1991-9603 https://doaj.org/article/87c432b91fd24940b4a415d87d8271d3 |
op_doi |
https://doi.org/10.5194/gmd-16-1297-2023 |
container_title |
Geoscientific Model Development |
container_volume |
16 |
container_issue |
4 |
container_start_page |
1297 |
op_container_end_page |
1314 |
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1766264510076682240 |