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Description and Demonstration of the Coupled Community Earth System Model v2 – Community Ice Sheet Model v2 (CESM2‐CISM2)

Earth system/ice‐sheet coupling is an area of recent, major Earth System Model (ESM) development. This work occurs at the intersection of glaciology and climate science and is motivated by a need for robust projections of sea‐level rise. The Community Ice Sheet Model version 2 (CISM2) is the newest...

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Autores principales: Muntjewerf, Laura, Sacks, William J., Lofverstrom, Marcus, Fyke, Jeremy, Lipscomb, William H., Ernani da Silva, Carolina, Vizcaino, Miren, Thayer‐Calder, Katherine, Lenaerts, Jan T. M., Sellevold, Raymond
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8365656/
https://www.ncbi.nlm.nih.gov/pubmed/34434489
http://dx.doi.org/10.1029/2020MS002356
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author Muntjewerf, Laura
Sacks, William J.
Lofverstrom, Marcus
Fyke, Jeremy
Lipscomb, William H.
Ernani da Silva, Carolina
Vizcaino, Miren
Thayer‐Calder, Katherine
Lenaerts, Jan T. M.
Sellevold, Raymond
author_facet Muntjewerf, Laura
Sacks, William J.
Lofverstrom, Marcus
Fyke, Jeremy
Lipscomb, William H.
Ernani da Silva, Carolina
Vizcaino, Miren
Thayer‐Calder, Katherine
Lenaerts, Jan T. M.
Sellevold, Raymond
author_sort Muntjewerf, Laura
collection PubMed
description Earth system/ice‐sheet coupling is an area of recent, major Earth System Model (ESM) development. This work occurs at the intersection of glaciology and climate science and is motivated by a need for robust projections of sea‐level rise. The Community Ice Sheet Model version 2 (CISM2) is the newest component model of the Community Earth System Model version 2 (CESM2). This study describes the coupling and novel capabilities of the model, including: (1) an advanced energy‐balance‐based surface mass balance calculation in the land component with downscaling via elevation classes; (2) a closed freshwater budget from ice sheet to the ocean from surface runoff, basal melting, and ice discharge; (3) dynamic land surface types; and (4) dynamic atmospheric topography. The Earth system/ice‐sheet coupling is demonstrated in a simulation with an evolving Greenland Ice Sheet (GrIS) under an idealized high CO(2) scenario. The model simulates a large expansion of ablation areas (where surface ablation exceeds snow accumulation) and a large increase in surface runoff. This results in an elevated freshwater flux to the ocean, as well as thinning of the ice sheet and area retreat. These GrIS changes result in reduced Greenland surface albedo, changes in the sign and magnitude of sensible and latent heat fluxes, and modified surface roughness and overall ice sheet topography. Representation of these couplings between climate and ice sheets is key for the simulation of ice and climate interactions.
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spelling pubmed-83656562021-08-23 Description and Demonstration of the Coupled Community Earth System Model v2 – Community Ice Sheet Model v2 (CESM2‐CISM2) Muntjewerf, Laura Sacks, William J. Lofverstrom, Marcus Fyke, Jeremy Lipscomb, William H. Ernani da Silva, Carolina Vizcaino, Miren Thayer‐Calder, Katherine Lenaerts, Jan T. M. Sellevold, Raymond J Adv Model Earth Syst Research Article Earth system/ice‐sheet coupling is an area of recent, major Earth System Model (ESM) development. This work occurs at the intersection of glaciology and climate science and is motivated by a need for robust projections of sea‐level rise. The Community Ice Sheet Model version 2 (CISM2) is the newest component model of the Community Earth System Model version 2 (CESM2). This study describes the coupling and novel capabilities of the model, including: (1) an advanced energy‐balance‐based surface mass balance calculation in the land component with downscaling via elevation classes; (2) a closed freshwater budget from ice sheet to the ocean from surface runoff, basal melting, and ice discharge; (3) dynamic land surface types; and (4) dynamic atmospheric topography. The Earth system/ice‐sheet coupling is demonstrated in a simulation with an evolving Greenland Ice Sheet (GrIS) under an idealized high CO(2) scenario. The model simulates a large expansion of ablation areas (where surface ablation exceeds snow accumulation) and a large increase in surface runoff. This results in an elevated freshwater flux to the ocean, as well as thinning of the ice sheet and area retreat. These GrIS changes result in reduced Greenland surface albedo, changes in the sign and magnitude of sensible and latent heat fluxes, and modified surface roughness and overall ice sheet topography. Representation of these couplings between climate and ice sheets is key for the simulation of ice and climate interactions. John Wiley and Sons Inc. 2021-06-24 2021-06 /pmc/articles/PMC8365656/ /pubmed/34434489 http://dx.doi.org/10.1029/2020MS002356 Text en © 2021. The Authors. Journal of Advances in Modeling Earth Systems published by Wiley Periodicals LLC on behalf of American Geophysical Union. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Muntjewerf, Laura
Sacks, William J.
Lofverstrom, Marcus
Fyke, Jeremy
Lipscomb, William H.
Ernani da Silva, Carolina
Vizcaino, Miren
Thayer‐Calder, Katherine
Lenaerts, Jan T. M.
Sellevold, Raymond
Description and Demonstration of the Coupled Community Earth System Model v2 – Community Ice Sheet Model v2 (CESM2‐CISM2)
title Description and Demonstration of the Coupled Community Earth System Model v2 – Community Ice Sheet Model v2 (CESM2‐CISM2)
title_full Description and Demonstration of the Coupled Community Earth System Model v2 – Community Ice Sheet Model v2 (CESM2‐CISM2)
title_fullStr Description and Demonstration of the Coupled Community Earth System Model v2 – Community Ice Sheet Model v2 (CESM2‐CISM2)
title_full_unstemmed Description and Demonstration of the Coupled Community Earth System Model v2 – Community Ice Sheet Model v2 (CESM2‐CISM2)
title_short Description and Demonstration of the Coupled Community Earth System Model v2 – Community Ice Sheet Model v2 (CESM2‐CISM2)
title_sort description and demonstration of the coupled community earth system model v2 – community ice sheet model v2 (cesm2‐cism2)
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8365656/
https://www.ncbi.nlm.nih.gov/pubmed/34434489
http://dx.doi.org/10.1029/2020MS002356
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