Coupling the U.K. Earth System Model to dynamic models of the Greenland and Antarctic ice sheets
The physical interactions between ice sheets and the atmosphere and ocean around them are major factors in determining the state of the climate system, yet many current Earth System models omit them entirely or treat them very simply. In this work we describe how models of the Greenland and Antarcti...
Published in: | Journal of Advances in Modeling Earth Systems |
---|---|
Main Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Geophysical Union
2021
|
Subjects: | |
Online Access: | https://centaur.reading.ac.uk/100480/ https://centaur.reading.ac.uk/100480/8/2021MS002520.pdf https://centaur.reading.ac.uk/100480/1/UKESM1_ice_technical_model_description_rev3.pdf |
id |
ftunivreading:oai:centaur.reading.ac.uk:100480 |
---|---|
record_format |
openpolar |
spelling |
ftunivreading:oai:centaur.reading.ac.uk:100480 2024-06-23T07:47:00+00:00 Coupling the U.K. Earth System Model to dynamic models of the Greenland and Antarctic ice sheets Smith, Robin S. Mathiot, Pierre Siahaan, Antony Lee, Victoria Cornford, Stephen L. Gregory, Jonathan M. Payne, Antony J. Jenkins, Adrian Holland, Paul R. Ridley, Jeff K. Jones, Colin G. 2021-10-19 text https://centaur.reading.ac.uk/100480/ https://centaur.reading.ac.uk/100480/8/2021MS002520.pdf https://centaur.reading.ac.uk/100480/1/UKESM1_ice_technical_model_description_rev3.pdf en eng American Geophysical Union https://centaur.reading.ac.uk/100480/8/2021MS002520.pdf https://centaur.reading.ac.uk/100480/1/UKESM1_ice_technical_model_description_rev3.pdf Smith, R. S. <https://centaur.reading.ac.uk/view/creators/90000556.html> orcid:0000-0001-7479-7778 , Mathiot, P., Siahaan, A., Lee, V., Cornford, S. L., Gregory, J. M. <https://centaur.reading.ac.uk/view/creators/90000874.html> orcid:0000-0003-1296-8644 , Payne, A. J., Jenkins, A., Holland, P. R., Ridley, J. K. and Jones, C. G. (2021) Coupling the U.K. Earth System Model to dynamic models of the Greenland and Antarctic ice sheets. Journal of Advances in Modeling Earth Systems, 13 (10). e2021MS002520. ISSN 1942-2466 doi: https://doi.org/10.1029/2021MS002520 <https://doi.org/10.1029/2021MS002520> cc_by_4 Article PeerReviewed 2021 ftunivreading https://doi.org/10.1029/2021MS002520 2024-06-11T15:10:56Z The physical interactions between ice sheets and the atmosphere and ocean around them are major factors in determining the state of the climate system, yet many current Earth System models omit them entirely or treat them very simply. In this work we describe how models of the Greenland and Antarctic ice sheets have been incorporated into the global U.K. Earth System model (UKESM1) via substantial technical developments with a two-way coupling that passes fluxes of energy and water, and the topography of the ice sheet surface and ice shelf base, between the component models. File-based coupling outside the running model executables is used throughout to pass information between the components, which we show is both physically appropriate and convenient within the UKESM1 structure. Ice sheet surface mass balance is computed in the land surface model using multi-layer snowpacks in subgrid-scale elevation ranges and compares well to the results of regional climate models. Ice shelf front discharge forms icebergs, which drift and melt in the ocean. Ice shelf basal mass balance is simulated using the full three-dimensional ocean model representation of the circulation in ice-shelf cavities. We show a range of example results, including from simulations with changes in ice sheet height and thickness of hundreds of metres, and changes in ice sheet grounding line and land-terminating margin of many tens of kilometres, demonstrating that the coupled model is computationally stable when subject to significant changes in ice sheet geometry. Article in Journal/Newspaper Antarc* Antarctic Greenland Ice Sheet Ice Shelf Iceberg* CentAUR: Central Archive at the University of Reading Antarctic Greenland Journal of Advances in Modeling Earth Systems 13 10 |
institution |
Open Polar |
collection |
CentAUR: Central Archive at the University of Reading |
op_collection_id |
ftunivreading |
language |
English |
description |
The physical interactions between ice sheets and the atmosphere and ocean around them are major factors in determining the state of the climate system, yet many current Earth System models omit them entirely or treat them very simply. In this work we describe how models of the Greenland and Antarctic ice sheets have been incorporated into the global U.K. Earth System model (UKESM1) via substantial technical developments with a two-way coupling that passes fluxes of energy and water, and the topography of the ice sheet surface and ice shelf base, between the component models. File-based coupling outside the running model executables is used throughout to pass information between the components, which we show is both physically appropriate and convenient within the UKESM1 structure. Ice sheet surface mass balance is computed in the land surface model using multi-layer snowpacks in subgrid-scale elevation ranges and compares well to the results of regional climate models. Ice shelf front discharge forms icebergs, which drift and melt in the ocean. Ice shelf basal mass balance is simulated using the full three-dimensional ocean model representation of the circulation in ice-shelf cavities. We show a range of example results, including from simulations with changes in ice sheet height and thickness of hundreds of metres, and changes in ice sheet grounding line and land-terminating margin of many tens of kilometres, demonstrating that the coupled model is computationally stable when subject to significant changes in ice sheet geometry. |
format |
Article in Journal/Newspaper |
author |
Smith, Robin S. Mathiot, Pierre Siahaan, Antony Lee, Victoria Cornford, Stephen L. Gregory, Jonathan M. Payne, Antony J. Jenkins, Adrian Holland, Paul R. Ridley, Jeff K. Jones, Colin G. |
spellingShingle |
Smith, Robin S. Mathiot, Pierre Siahaan, Antony Lee, Victoria Cornford, Stephen L. Gregory, Jonathan M. Payne, Antony J. Jenkins, Adrian Holland, Paul R. Ridley, Jeff K. Jones, Colin G. Coupling the U.K. Earth System Model to dynamic models of the Greenland and Antarctic ice sheets |
author_facet |
Smith, Robin S. Mathiot, Pierre Siahaan, Antony Lee, Victoria Cornford, Stephen L. Gregory, Jonathan M. Payne, Antony J. Jenkins, Adrian Holland, Paul R. Ridley, Jeff K. Jones, Colin G. |
author_sort |
Smith, Robin S. |
title |
Coupling the U.K. Earth System Model to dynamic models of the Greenland and Antarctic ice sheets |
title_short |
Coupling the U.K. Earth System Model to dynamic models of the Greenland and Antarctic ice sheets |
title_full |
Coupling the U.K. Earth System Model to dynamic models of the Greenland and Antarctic ice sheets |
title_fullStr |
Coupling the U.K. Earth System Model to dynamic models of the Greenland and Antarctic ice sheets |
title_full_unstemmed |
Coupling the U.K. Earth System Model to dynamic models of the Greenland and Antarctic ice sheets |
title_sort |
coupling the u.k. earth system model to dynamic models of the greenland and antarctic ice sheets |
publisher |
American Geophysical Union |
publishDate |
2021 |
url |
https://centaur.reading.ac.uk/100480/ https://centaur.reading.ac.uk/100480/8/2021MS002520.pdf https://centaur.reading.ac.uk/100480/1/UKESM1_ice_technical_model_description_rev3.pdf |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Greenland Ice Sheet Ice Shelf Iceberg* |
genre_facet |
Antarc* Antarctic Greenland Ice Sheet Ice Shelf Iceberg* |
op_relation |
https://centaur.reading.ac.uk/100480/8/2021MS002520.pdf https://centaur.reading.ac.uk/100480/1/UKESM1_ice_technical_model_description_rev3.pdf Smith, R. S. <https://centaur.reading.ac.uk/view/creators/90000556.html> orcid:0000-0001-7479-7778 , Mathiot, P., Siahaan, A., Lee, V., Cornford, S. L., Gregory, J. M. <https://centaur.reading.ac.uk/view/creators/90000874.html> orcid:0000-0003-1296-8644 , Payne, A. J., Jenkins, A., Holland, P. R., Ridley, J. K. and Jones, C. G. (2021) Coupling the U.K. Earth System Model to dynamic models of the Greenland and Antarctic ice sheets. Journal of Advances in Modeling Earth Systems, 13 (10). e2021MS002520. ISSN 1942-2466 doi: https://doi.org/10.1029/2021MS002520 <https://doi.org/10.1029/2021MS002520> |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.1029/2021MS002520 |
container_title |
Journal of Advances in Modeling Earth Systems |
container_volume |
13 |
container_issue |
10 |
_version_ |
1802650015401771008 |