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Title: Development of the Regional Arctic System Model (RASM): Near-Surface Atmospheric Climate Sensitivity

Abstract

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.

Authors:
 [1];  [2];  [3];  [4];  [2];  [5];  [3];  [6];  [6];  [7];  [2];  [3];  [7];  [8];  [5]
  1. Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, Colorado, Department of Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder, Colorado
  2. Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, Colorado
  3. Department of Oceanography, Naval Postgraduate School, Monterey, California
  4. Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, Colorado, NOAA/Earth System Research Laboratory, Boulder, Colorado
  5. Department of Atmospheric Sciences, University of Arizona, Tucson, Arizona
  6. Department of Geological and Atmospheric Sciences, Iowa State University, Ames, Iowa
  7. Department of Civil and Environmental Engineering, University of Washington, Seattle, Washington
  8. Institute of Oceanology, Sopot, Poland
Publication Date:
Research Org.:
Univ. of Washington, Seattle, WA (United States); Univ. of Colorado, Boulder, CO (United States); Iowa State Univ., Ames, IA (United States); Univ. of Arizona, Tucson, AZ (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1367372
Alternate Identifier(s):
OSTI ID: 1536999
Grant/Contract Number:  
FG02-07ER64462; SC0006178; FG02-07ER64460; SC0006856; FG02-07ER64463; SC0006693
Resource Type:
Published Article
Journal Name:
Journal of Climate
Additional Journal Information:
Journal Name: Journal of Climate Journal Volume: 30 Journal Issue: 15; Journal ID: ISSN 0894-8755
Publisher:
American Meteorological Society
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; Meteorology & Atmospheric Sciences

Citation Formats

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, and Zeng, Xubin. Development of the Regional Arctic System Model (RASM): Near-Surface Atmospheric Climate Sensitivity. United States: N. p., 2017. Web. doi:10.1175/JCLI-D-15-0775.1.
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. United States. doi:10.1175/JCLI-D-15-0775.1.
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, and Zeng, Xubin. Fri . "Development of the Regional Arctic System Model (RASM): Near-Surface Atmospheric Climate Sensitivity". United States. doi:10.1175/JCLI-D-15-0775.1.
@article{osti_1367372,
title = {Development of the Regional Arctic System Model (RASM): Near-Surface Atmospheric Climate Sensitivity},
author = {Cassano, John J. and DuVivier, Alice and Roberts, Andrew and Hughes, Mimi and Seefeldt, Mark and Brunke, Michael and Craig, Anthony and Fisel, Brandon and Gutowski, William and Hamman, Joseph and Higgins, Matthew and Maslowski, Wieslaw and Nijssen, Bart and Osinski, Robert and Zeng, Xubin},
abstractNote = {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.},
doi = {10.1175/JCLI-D-15-0775.1},
journal = {Journal of Climate},
number = 15,
volume = 30,
place = {United States},
year = {2017},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1175/JCLI-D-15-0775.1

Citation Metrics:
Cited by: 4 works
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Works referencing / citing this record:

Quality control for community-based sea-ice model development
journal, August 2018

  • Roberts, Andrew F.; Hunke, Elizabeth C.; Allard, Richard
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 376, Issue 2129
  • DOI: 10.1098/rsta.2017.0344

Quality control for community-based sea-ice model development
journal, August 2018

  • Roberts, Andrew F.; Hunke, Elizabeth C.; Allard, Richard
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 376, Issue 2129
  • DOI: 10.1098/rsta.2017.0344