An Application of a Numerical Sea Ice Model to the East Greenland Area.
A dynamic-thermodynamic sea ice model which employs a viscous-plastic constitutive law has been applied to the East Greenland area. The model is run on a 40-km spatial scale at 1/4-day time steps for a 60-day period with forcing data beginning on 1 October 1979. Results tend to verify that the model...
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ftdtic:ADA114453 2023-05-15T16:03:38+02:00 An Application of a Numerical Sea Ice Model to the East Greenland Area. Tucker,Walter B , III NAVAL POSTGRADUATE SCHOOL MONTEREY CA 1981-12 text/html http://www.dtic.mil/docs/citations/ADA114453 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA114453 en eng http://www.dtic.mil/docs/citations/ADA114453 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Meteorology Physical and Dynamic Oceanography Snow Ice and Permafrost *Sea ice Greenland Sea Mathematical models Computerized simulation Thickness Drift Velocity Strength(General) Growth(General) Wind Ocean currents Theses Text 1981 ftdtic 2016-02-19T07:58:36Z A dynamic-thermodynamic sea ice model which employs a viscous-plastic constitutive law has been applied to the East Greenland area. The model is run on a 40-km spatial scale at 1/4-day time steps for a 60-day period with forcing data beginning on 1 October 1979. Results tend to verify that the model predicts reasonable thicknesses and velocities within the ice margin. Thermodynamic ice growth produces excessive ice extent, however, probably due to inadequate parameterization of oceanic heat flux. Ice velocities near the free ice edge are also not well simulated, and preliminary investigations attribute this to an improper wind field in this area. A simulation which neglects ice strength, effectively damping ice interaction with itself and allowing no resistance to deformation, produces excessive ice drift toward the coast and results in unrealistic nearshore thickness. A dynamics-only simulation produced reasonable results including a more realistic ice extent, but the need for proper thermo-dynamics is also apparent. Other simulations verify that ice import from the Artic Basin, and ice transport due to winds and currents, were also important components in the model studies. (Author) Text East Greenland Greenland Greenland Sea Ice permafrost Sea ice Defense Technical Information Center: DTIC Technical Reports database Greenland |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Meteorology Physical and Dynamic Oceanography Snow Ice and Permafrost *Sea ice Greenland Sea Mathematical models Computerized simulation Thickness Drift Velocity Strength(General) Growth(General) Wind Ocean currents Theses |
spellingShingle |
Meteorology Physical and Dynamic Oceanography Snow Ice and Permafrost *Sea ice Greenland Sea Mathematical models Computerized simulation Thickness Drift Velocity Strength(General) Growth(General) Wind Ocean currents Theses Tucker,Walter B , III An Application of a Numerical Sea Ice Model to the East Greenland Area. |
topic_facet |
Meteorology Physical and Dynamic Oceanography Snow Ice and Permafrost *Sea ice Greenland Sea Mathematical models Computerized simulation Thickness Drift Velocity Strength(General) Growth(General) Wind Ocean currents Theses |
description |
A dynamic-thermodynamic sea ice model which employs a viscous-plastic constitutive law has been applied to the East Greenland area. The model is run on a 40-km spatial scale at 1/4-day time steps for a 60-day period with forcing data beginning on 1 October 1979. Results tend to verify that the model predicts reasonable thicknesses and velocities within the ice margin. Thermodynamic ice growth produces excessive ice extent, however, probably due to inadequate parameterization of oceanic heat flux. Ice velocities near the free ice edge are also not well simulated, and preliminary investigations attribute this to an improper wind field in this area. A simulation which neglects ice strength, effectively damping ice interaction with itself and allowing no resistance to deformation, produces excessive ice drift toward the coast and results in unrealistic nearshore thickness. A dynamics-only simulation produced reasonable results including a more realistic ice extent, but the need for proper thermo-dynamics is also apparent. Other simulations verify that ice import from the Artic Basin, and ice transport due to winds and currents, were also important components in the model studies. (Author) |
author2 |
NAVAL POSTGRADUATE SCHOOL MONTEREY CA |
format |
Text |
author |
Tucker,Walter B , III |
author_facet |
Tucker,Walter B , III |
author_sort |
Tucker,Walter B , III |
title |
An Application of a Numerical Sea Ice Model to the East Greenland Area. |
title_short |
An Application of a Numerical Sea Ice Model to the East Greenland Area. |
title_full |
An Application of a Numerical Sea Ice Model to the East Greenland Area. |
title_fullStr |
An Application of a Numerical Sea Ice Model to the East Greenland Area. |
title_full_unstemmed |
An Application of a Numerical Sea Ice Model to the East Greenland Area. |
title_sort |
application of a numerical sea ice model to the east greenland area. |
publishDate |
1981 |
url |
http://www.dtic.mil/docs/citations/ADA114453 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA114453 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland Greenland Greenland Sea Ice permafrost Sea ice |
genre_facet |
East Greenland Greenland Greenland Sea Ice permafrost Sea ice |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA114453 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766399335419871232 |