Development of the Regional Arctic System Model (RASM): Near-Surface Atmospheric Climate Sensitivity
The near-surface climate, including the atmosphere, ocean, sea ice, and land state and fluxes, in the initial version of the Regional Arctic System Model (RASM) are presented. The sensitivity of the RASM near-surface climate to changes in atmosphere, ocean, and sea ice parameters and physics is eval...
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ftiowastateuniv:oai:lib.dr.iastate.edu:ge_at_pubs-1292 2023-05-15T14:51:35+02:00 Development of the Regional Arctic System Model (RASM): Near-Surface Atmospheric Climate Sensitivity Cassano, John J. DuVivier, Alice Roberts, Andrew Hughes, Mimi Seefeldt, Mark Brunke, Michael Craig, Anthony Fisel, Brandon Gutowski, William Hamman, Joseph Higgins, Matthew Maslowski, Wieslaw Nijssen, Bart Osinski, Robert Zeng, Xubin 2017-08-01T07:00:00Z application/pdf https://lib.dr.iastate.edu/ge_at_pubs/279 https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1292&context=ge_at_pubs en eng Iowa State University Digital Repository https://lib.dr.iastate.edu/ge_at_pubs/279 https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1292&context=ge_at_pubs Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted. Geological and Atmospheric Sciences Publications Atmospheric Sciences Climate Oceanography Statistical Models text 2017 ftiowastateuniv 2021-08-21T22:45:31Z The near-surface climate, including the atmosphere, ocean, sea ice, and land state and fluxes, in the initial version of the Regional Arctic System Model (RASM) are presented. The sensitivity of the RASM near-surface climate to changes in atmosphere, ocean, and sea ice parameters and physics is evaluated in four simulations. The near-surface atmospheric circulation is well simulated in all four RASM simulations but biases in surface temperature are caused by biases in downward surface radiative fluxes. Errors in radiative fluxes are due to biases in simulated clouds with different versions of RASM simulating either too much or too little cloud radiative impact over open ocean regions and all versions simulating too little cloud radiative impact over land areas. Cold surface temperature biases in the central Arctic in winter are likely due to too few or too radiatively thin clouds. The precipitation simulated by RASM is sensitive to changes in evaporation that were linked to sea surface temperature biases. Future work will explore changes in model microphysics aimed at minimizing the cloud and radiation biases identified in this work. Text Arctic Sea ice Digital Repository @ Iowa State University Arctic |
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Open Polar |
collection |
Digital Repository @ Iowa State University |
op_collection_id |
ftiowastateuniv |
language |
English |
topic |
Atmospheric Sciences Climate Oceanography Statistical Models |
spellingShingle |
Atmospheric Sciences Climate Oceanography Statistical Models Cassano, John J. DuVivier, Alice Roberts, Andrew Hughes, Mimi Seefeldt, Mark Brunke, Michael Craig, Anthony Fisel, Brandon Gutowski, William Hamman, Joseph Higgins, Matthew Maslowski, Wieslaw Nijssen, Bart Osinski, Robert Zeng, Xubin Development of the Regional Arctic System Model (RASM): Near-Surface Atmospheric Climate Sensitivity |
topic_facet |
Atmospheric Sciences Climate Oceanography Statistical Models |
description |
The near-surface climate, including the atmosphere, ocean, sea ice, and land state and fluxes, in the initial version of the Regional Arctic System Model (RASM) are presented. The sensitivity of the RASM near-surface climate to changes in atmosphere, ocean, and sea ice parameters and physics is evaluated in four simulations. The near-surface atmospheric circulation is well simulated in all four RASM simulations but biases in surface temperature are caused by biases in downward surface radiative fluxes. Errors in radiative fluxes are due to biases in simulated clouds with different versions of RASM simulating either too much or too little cloud radiative impact over open ocean regions and all versions simulating too little cloud radiative impact over land areas. Cold surface temperature biases in the central Arctic in winter are likely due to too few or too radiatively thin clouds. The precipitation simulated by RASM is sensitive to changes in evaporation that were linked to sea surface temperature biases. Future work will explore changes in model microphysics aimed at minimizing the cloud and radiation biases identified in this work. |
format |
Text |
author |
Cassano, John J. DuVivier, Alice Roberts, Andrew Hughes, Mimi Seefeldt, Mark Brunke, Michael Craig, Anthony Fisel, Brandon Gutowski, William Hamman, Joseph Higgins, Matthew Maslowski, Wieslaw Nijssen, Bart Osinski, Robert Zeng, Xubin |
author_facet |
Cassano, John J. DuVivier, Alice Roberts, Andrew Hughes, Mimi Seefeldt, Mark Brunke, Michael Craig, Anthony Fisel, Brandon Gutowski, William Hamman, Joseph Higgins, Matthew Maslowski, Wieslaw Nijssen, Bart Osinski, Robert Zeng, Xubin |
author_sort |
Cassano, John J. |
title |
Development of the Regional Arctic System Model (RASM): Near-Surface Atmospheric Climate Sensitivity |
title_short |
Development of the Regional Arctic System Model (RASM): Near-Surface Atmospheric Climate Sensitivity |
title_full |
Development of the Regional Arctic System Model (RASM): Near-Surface Atmospheric Climate Sensitivity |
title_fullStr |
Development of the Regional Arctic System Model (RASM): Near-Surface Atmospheric Climate Sensitivity |
title_full_unstemmed |
Development of the Regional Arctic System Model (RASM): Near-Surface Atmospheric Climate Sensitivity |
title_sort |
development of the regional arctic system model (rasm): near-surface atmospheric climate sensitivity |
publisher |
Iowa State University Digital Repository |
publishDate |
2017 |
url |
https://lib.dr.iastate.edu/ge_at_pubs/279 https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1292&context=ge_at_pubs |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
Geological and Atmospheric Sciences Publications |
op_relation |
https://lib.dr.iastate.edu/ge_at_pubs/279 https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1292&context=ge_at_pubs |
op_rights |
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted. |
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1766322708564410368 |