CMIP5 model selection for ISMIP6 ice sheet model forcing: Greenland and Antarctica
The ice sheet model intercomparison project for CMIP6 (ISMIP6) effort brings together the ice sheet and climate modeling communities to gain understanding of the ice sheet contribution to sea level rise. ISMIP6 conducts stand-alone ice sheet experiments that use space- and time-varying forcing deriv...
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Online Access: | http://www.osti.gov/servlets/purl/1634959 https://www.osti.gov/biblio/1634959 https://doi.org/10.5194/tc-14-855-2020 |
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ftosti:oai:osti.gov:1634959 2023-07-30T03:58:03+02:00 CMIP5 model selection for ISMIP6 ice sheet model forcing: Greenland and Antarctica Barthel, Alice Agosta, Cécile Little, Christopher M. Hattermann, Tore Jourdain, Nicolas C. Goelzer, Heiko Nowicki, Sophie Seroussi, Helene Straneo, Fiammetta Bracegirdle, Thomas J. 2023-07-03 application/pdf http://www.osti.gov/servlets/purl/1634959 https://www.osti.gov/biblio/1634959 https://doi.org/10.5194/tc-14-855-2020 unknown http://www.osti.gov/servlets/purl/1634959 https://www.osti.gov/biblio/1634959 https://doi.org/10.5194/tc-14-855-2020 doi:10.5194/tc-14-855-2020 54 ENVIRONMENTAL SCIENCES 2023 ftosti https://doi.org/10.5194/tc-14-855-2020 2023-07-11T09:43:36Z The ice sheet model intercomparison project for CMIP6 (ISMIP6) effort brings together the ice sheet and climate modeling communities to gain understanding of the ice sheet contribution to sea level rise. ISMIP6 conducts stand-alone ice sheet experiments that use space- and time-varying forcing derived from atmosphere–ocean coupled global climate models (AOGCMs) to reflect plausible trajectories for climate projections. The goal of this study is to recommend a subset of CMIP5 AOGCMs (three core and three targeted) to produce forcing for ISMIP6 stand-alone ice sheet simulations, based on (i) their representation of current climate near Antarctica and Greenland relative to observations and (ii) their ability to sample a diversity of projected atmosphere and ocean changes over the 21st century. The selection is performed separately for Greenland and Antarctica. Model evaluation over the historical period focuses on variables used to generate ice sheet forcing. For stage (i), we combine metrics of atmosphere and surface ocean state (annual- and seasonal-mean variables over large spatial domains) with metrics of time-mean subsurface ocean temperature biases averaged over sectors of the continental shelf. For stage (ii), we maximize the diversity of climate projections among the best-performing models. Model selection is also constrained by technical limitations, such as availability of required data from RCP2.6 and RCP8.5 projections. The selected top three CMIP5 climate models are CCSM4, MIROC-ESM-CHEM, and NorESM1-M for Antarctica and HadGEM2-ES, MIROC5, and NorESM1-M for Greenland. This model selection was designed specifically for ISMIP6 but can be adapted for other applications. Other/Unknown Material Antarc* Antarctica Greenland Ice Sheet SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Greenland The Cryosphere 14 3 855 879 |
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Open Polar |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
spellingShingle |
54 ENVIRONMENTAL SCIENCES Barthel, Alice Agosta, Cécile Little, Christopher M. Hattermann, Tore Jourdain, Nicolas C. Goelzer, Heiko Nowicki, Sophie Seroussi, Helene Straneo, Fiammetta Bracegirdle, Thomas J. CMIP5 model selection for ISMIP6 ice sheet model forcing: Greenland and Antarctica |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
The ice sheet model intercomparison project for CMIP6 (ISMIP6) effort brings together the ice sheet and climate modeling communities to gain understanding of the ice sheet contribution to sea level rise. ISMIP6 conducts stand-alone ice sheet experiments that use space- and time-varying forcing derived from atmosphere–ocean coupled global climate models (AOGCMs) to reflect plausible trajectories for climate projections. The goal of this study is to recommend a subset of CMIP5 AOGCMs (three core and three targeted) to produce forcing for ISMIP6 stand-alone ice sheet simulations, based on (i) their representation of current climate near Antarctica and Greenland relative to observations and (ii) their ability to sample a diversity of projected atmosphere and ocean changes over the 21st century. The selection is performed separately for Greenland and Antarctica. Model evaluation over the historical period focuses on variables used to generate ice sheet forcing. For stage (i), we combine metrics of atmosphere and surface ocean state (annual- and seasonal-mean variables over large spatial domains) with metrics of time-mean subsurface ocean temperature biases averaged over sectors of the continental shelf. For stage (ii), we maximize the diversity of climate projections among the best-performing models. Model selection is also constrained by technical limitations, such as availability of required data from RCP2.6 and RCP8.5 projections. The selected top three CMIP5 climate models are CCSM4, MIROC-ESM-CHEM, and NorESM1-M for Antarctica and HadGEM2-ES, MIROC5, and NorESM1-M for Greenland. This model selection was designed specifically for ISMIP6 but can be adapted for other applications. |
author |
Barthel, Alice Agosta, Cécile Little, Christopher M. Hattermann, Tore Jourdain, Nicolas C. Goelzer, Heiko Nowicki, Sophie Seroussi, Helene Straneo, Fiammetta Bracegirdle, Thomas J. |
author_facet |
Barthel, Alice Agosta, Cécile Little, Christopher M. Hattermann, Tore Jourdain, Nicolas C. Goelzer, Heiko Nowicki, Sophie Seroussi, Helene Straneo, Fiammetta Bracegirdle, Thomas J. |
author_sort |
Barthel, Alice |
title |
CMIP5 model selection for ISMIP6 ice sheet model forcing: Greenland and Antarctica |
title_short |
CMIP5 model selection for ISMIP6 ice sheet model forcing: Greenland and Antarctica |
title_full |
CMIP5 model selection for ISMIP6 ice sheet model forcing: Greenland and Antarctica |
title_fullStr |
CMIP5 model selection for ISMIP6 ice sheet model forcing: Greenland and Antarctica |
title_full_unstemmed |
CMIP5 model selection for ISMIP6 ice sheet model forcing: Greenland and Antarctica |
title_sort |
cmip5 model selection for ismip6 ice sheet model forcing: greenland and antarctica |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1634959 https://www.osti.gov/biblio/1634959 https://doi.org/10.5194/tc-14-855-2020 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Antarc* Antarctica Greenland Ice Sheet |
genre_facet |
Antarc* Antarctica Greenland Ice Sheet |
op_relation |
http://www.osti.gov/servlets/purl/1634959 https://www.osti.gov/biblio/1634959 https://doi.org/10.5194/tc-14-855-2020 doi:10.5194/tc-14-855-2020 |
op_doi |
https://doi.org/10.5194/tc-14-855-2020 |
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The Cryosphere |
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14 |
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3 |
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855 |
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879 |
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1772820964485103616 |