A Comparison of Ice Drift Motion from Modeled and Buoy Data
U.S. Naval operations in the Arctic require an effective way to predict the movement and behavior of sea ice. This is currently provided by the Navy's PIPS model which is based on Hibler's (1979) sea ice model which combines the thermodynamic ice heat budget with a dynamic ice model sensit...
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ftdtic:ADA246062 2023-05-15T14:34:52+02:00 A Comparison of Ice Drift Motion from Modeled and Buoy Data Lundeen, Gregory N. NAVAL POSTGRADUATE SCHOOL MONTEREY CA 1990-12 text/html http://www.dtic.mil/docs/citations/ADA246062 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA246062 en eng http://www.dtic.mil/docs/citations/ADA246062 Approved for public release; distribution is unlimited. DTIC AND NTIS Meteorology *TEST AND EVALUATION THICKNESS MODELS DYNAMICS THERMODYNAMICS EDGES HIGH VELOCITY RESOLUTION WIND MOTION ACCURACY DRIFT ICE LIMITATIONS RESPONSE PRECISION STRENGTH(GENERAL) BALANCE PATTERNS NAVAL OPERATIONS WIND VELOCITY RHEOLOGY BUDGETS HEAT MOMENTUM SEA ICE ARCTIC REGIONS BUOYS ICEBERGS ARCTIC OCEAN INPUT *BUOYS *SEA ICE ARCTIC BUOYS ICE FORECAST ARCTIC THESES Text 1990 ftdtic 2016-02-22T17:06:54Z U.S. Naval operations in the Arctic require an effective way to predict the movement and behavior of sea ice. This is currently provided by the Navy's PIPS model which is based on Hibler's (1979) sea ice model which combines the thermodynamic ice heat budget with a dynamic ice model sensitive to the effects of ice thickness and ice strength. The PIPS model simultaneously solves a system of four equations of ice momentum balance, ice rheology, ice thickness, and ice strength. In order to test the performance of Hibler's formulation, another version of it, developed by Lemke et al., (1990), was adapted to the Arctic Ocean. The model was initialized and run using 1986 forcing data and its performance evaluated using Arctic buoy drift data. Results indicate that the model ice drift is principally driven by wind forcing, that its response to changes in weather is rapid and essentially correct, and that it performs better at high wind speeds than at low wind speeds. Limitations to its accuracy were chiefly the result of limits to the precision and resolution of the input data provided to run the model, especially near the ice margins. Overall, the model performs well in depicting the ice flow pattern in all conditions in the Arctic. Text Arctic Arctic Ocean Iceberg* Sea ice Defense Technical Information Center: DTIC Technical Reports database Arctic Arctic Ocean |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Meteorology *TEST AND EVALUATION THICKNESS MODELS DYNAMICS THERMODYNAMICS EDGES HIGH VELOCITY RESOLUTION WIND MOTION ACCURACY DRIFT ICE LIMITATIONS RESPONSE PRECISION STRENGTH(GENERAL) BALANCE PATTERNS NAVAL OPERATIONS WIND VELOCITY RHEOLOGY BUDGETS HEAT MOMENTUM SEA ICE ARCTIC REGIONS BUOYS ICEBERGS ARCTIC OCEAN INPUT *BUOYS *SEA ICE ARCTIC BUOYS ICE FORECAST ARCTIC THESES |
spellingShingle |
Meteorology *TEST AND EVALUATION THICKNESS MODELS DYNAMICS THERMODYNAMICS EDGES HIGH VELOCITY RESOLUTION WIND MOTION ACCURACY DRIFT ICE LIMITATIONS RESPONSE PRECISION STRENGTH(GENERAL) BALANCE PATTERNS NAVAL OPERATIONS WIND VELOCITY RHEOLOGY BUDGETS HEAT MOMENTUM SEA ICE ARCTIC REGIONS BUOYS ICEBERGS ARCTIC OCEAN INPUT *BUOYS *SEA ICE ARCTIC BUOYS ICE FORECAST ARCTIC THESES Lundeen, Gregory N. A Comparison of Ice Drift Motion from Modeled and Buoy Data |
topic_facet |
Meteorology *TEST AND EVALUATION THICKNESS MODELS DYNAMICS THERMODYNAMICS EDGES HIGH VELOCITY RESOLUTION WIND MOTION ACCURACY DRIFT ICE LIMITATIONS RESPONSE PRECISION STRENGTH(GENERAL) BALANCE PATTERNS NAVAL OPERATIONS WIND VELOCITY RHEOLOGY BUDGETS HEAT MOMENTUM SEA ICE ARCTIC REGIONS BUOYS ICEBERGS ARCTIC OCEAN INPUT *BUOYS *SEA ICE ARCTIC BUOYS ICE FORECAST ARCTIC THESES |
description |
U.S. Naval operations in the Arctic require an effective way to predict the movement and behavior of sea ice. This is currently provided by the Navy's PIPS model which is based on Hibler's (1979) sea ice model which combines the thermodynamic ice heat budget with a dynamic ice model sensitive to the effects of ice thickness and ice strength. The PIPS model simultaneously solves a system of four equations of ice momentum balance, ice rheology, ice thickness, and ice strength. In order to test the performance of Hibler's formulation, another version of it, developed by Lemke et al., (1990), was adapted to the Arctic Ocean. The model was initialized and run using 1986 forcing data and its performance evaluated using Arctic buoy drift data. Results indicate that the model ice drift is principally driven by wind forcing, that its response to changes in weather is rapid and essentially correct, and that it performs better at high wind speeds than at low wind speeds. Limitations to its accuracy were chiefly the result of limits to the precision and resolution of the input data provided to run the model, especially near the ice margins. Overall, the model performs well in depicting the ice flow pattern in all conditions in the Arctic. |
author2 |
NAVAL POSTGRADUATE SCHOOL MONTEREY CA |
format |
Text |
author |
Lundeen, Gregory N. |
author_facet |
Lundeen, Gregory N. |
author_sort |
Lundeen, Gregory N. |
title |
A Comparison of Ice Drift Motion from Modeled and Buoy Data |
title_short |
A Comparison of Ice Drift Motion from Modeled and Buoy Data |
title_full |
A Comparison of Ice Drift Motion from Modeled and Buoy Data |
title_fullStr |
A Comparison of Ice Drift Motion from Modeled and Buoy Data |
title_full_unstemmed |
A Comparison of Ice Drift Motion from Modeled and Buoy Data |
title_sort |
comparison of ice drift motion from modeled and buoy data |
publishDate |
1990 |
url |
http://www.dtic.mil/docs/citations/ADA246062 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA246062 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Iceberg* Sea ice |
genre_facet |
Arctic Arctic Ocean Iceberg* Sea ice |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA246062 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766307811870900224 |