Cargando…
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...
Autores principales: | , , , , , , , , , |
---|---|
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 |
_version_ | 1783738751148621824 |
---|---|
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. |
format | Online Article Text |
id | pubmed-8365656 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
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 |
work_keys_str_mv | AT muntjewerflaura descriptionanddemonstrationofthecoupledcommunityearthsystemmodelv2communityicesheetmodelv2cesm2cism2 AT sackswilliamj descriptionanddemonstrationofthecoupledcommunityearthsystemmodelv2communityicesheetmodelv2cesm2cism2 AT lofverstrommarcus descriptionanddemonstrationofthecoupledcommunityearthsystemmodelv2communityicesheetmodelv2cesm2cism2 AT fykejeremy descriptionanddemonstrationofthecoupledcommunityearthsystemmodelv2communityicesheetmodelv2cesm2cism2 AT lipscombwilliamh descriptionanddemonstrationofthecoupledcommunityearthsystemmodelv2communityicesheetmodelv2cesm2cism2 AT ernanidasilvacarolina descriptionanddemonstrationofthecoupledcommunityearthsystemmodelv2communityicesheetmodelv2cesm2cism2 AT vizcainomiren descriptionanddemonstrationofthecoupledcommunityearthsystemmodelv2communityicesheetmodelv2cesm2cism2 AT thayercalderkatherine descriptionanddemonstrationofthecoupledcommunityearthsystemmodelv2communityicesheetmodelv2cesm2cism2 AT lenaertsjantm descriptionanddemonstrationofthecoupledcommunityearthsystemmodelv2communityicesheetmodelv2cesm2cism2 AT sellevoldraymond descriptionanddemonstrationofthecoupledcommunityearthsystemmodelv2communityicesheetmodelv2cesm2cism2 |