An Evaluation of Sea Ice Deformation and Its Spatial Characteristics from the Regional Arctic System Model
The Regional Arctic System Model (RASM) is used to investigate the process and frequency of extreme sea ice shear deformation events resulting in pycnocline upwelling due to Ekman pumping as described in McPhee et al. (2005). RASM is a fully coupled land, atmosphere, sea ice, and ocean model with hi...
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ftdtic:ADA576271 2023-05-15T14:49:24+02:00 An Evaluation of Sea Ice Deformation and Its Spatial Characteristics from the Regional Arctic System Model Mills, Thomas J NAVAL POSTGRADUATE SCHOOL MONTEREY CA 2012-12 text/html http://www.dtic.mil/docs/citations/ADA576271 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA576271 en eng http://www.dtic.mil/docs/citations/ADA576271 Approved for public release; distribution is unlimited. DTIC Physical and Dynamic Oceanography *DEFORMATION *OCEANOGRAPHIC DATA *SEA ICE ARCTIC REGIONS SHEAR PROPERTIES SPATIAL DISTRIBUTION Text 2012 ftdtic 2016-02-24T10:46:18Z The Regional Arctic System Model (RASM) is used to investigate the process and frequency of extreme sea ice shear deformation events resulting in pycnocline upwelling due to Ekman pumping as described in McPhee et al. (2005). RASM is a fully coupled land, atmosphere, sea ice, and ocean model with high spatial and temporal resolution. Time series analysis of the upper ocean temperature structure, basal melt rate, total deformation rate, and ice-ocean stress curl yield the identification of individual events. Shear deformation events generate an upper ocean response given a positive ice-ocean stress curl, i.e., induced by counterclockwise rotation in the ice velocity field relative to the underlying ocean. Spatial and temporal characterization of the total deformation rate indicates that fine spatial and temporal resolution, on a statistical scale, is important for the energy budget of the Arctic. Results demonstrate a power law relationship between the mean deformation rate and length scale. This is hypothesized as being due to RASMs fully coupled system allowing for naturally occurring high frequency noise and the cascade of energy among model components. Simulated events are infrequent and their relative impact on large scale energy exchange remains undetermined, which warrants further research of these phenomena. Text Arctic Sea ice Defense Technical Information Center: DTIC Technical Reports database Arctic Curl ENVELOPE(-63.071,-63.071,-70.797,-70.797) |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Physical and Dynamic Oceanography *DEFORMATION *OCEANOGRAPHIC DATA *SEA ICE ARCTIC REGIONS SHEAR PROPERTIES SPATIAL DISTRIBUTION |
spellingShingle |
Physical and Dynamic Oceanography *DEFORMATION *OCEANOGRAPHIC DATA *SEA ICE ARCTIC REGIONS SHEAR PROPERTIES SPATIAL DISTRIBUTION Mills, Thomas J An Evaluation of Sea Ice Deformation and Its Spatial Characteristics from the Regional Arctic System Model |
topic_facet |
Physical and Dynamic Oceanography *DEFORMATION *OCEANOGRAPHIC DATA *SEA ICE ARCTIC REGIONS SHEAR PROPERTIES SPATIAL DISTRIBUTION |
description |
The Regional Arctic System Model (RASM) is used to investigate the process and frequency of extreme sea ice shear deformation events resulting in pycnocline upwelling due to Ekman pumping as described in McPhee et al. (2005). RASM is a fully coupled land, atmosphere, sea ice, and ocean model with high spatial and temporal resolution. Time series analysis of the upper ocean temperature structure, basal melt rate, total deformation rate, and ice-ocean stress curl yield the identification of individual events. Shear deformation events generate an upper ocean response given a positive ice-ocean stress curl, i.e., induced by counterclockwise rotation in the ice velocity field relative to the underlying ocean. Spatial and temporal characterization of the total deformation rate indicates that fine spatial and temporal resolution, on a statistical scale, is important for the energy budget of the Arctic. Results demonstrate a power law relationship between the mean deformation rate and length scale. This is hypothesized as being due to RASMs fully coupled system allowing for naturally occurring high frequency noise and the cascade of energy among model components. Simulated events are infrequent and their relative impact on large scale energy exchange remains undetermined, which warrants further research of these phenomena. |
author2 |
NAVAL POSTGRADUATE SCHOOL MONTEREY CA |
format |
Text |
author |
Mills, Thomas J |
author_facet |
Mills, Thomas J |
author_sort |
Mills, Thomas J |
title |
An Evaluation of Sea Ice Deformation and Its Spatial Characteristics from the Regional Arctic System Model |
title_short |
An Evaluation of Sea Ice Deformation and Its Spatial Characteristics from the Regional Arctic System Model |
title_full |
An Evaluation of Sea Ice Deformation and Its Spatial Characteristics from the Regional Arctic System Model |
title_fullStr |
An Evaluation of Sea Ice Deformation and Its Spatial Characteristics from the Regional Arctic System Model |
title_full_unstemmed |
An Evaluation of Sea Ice Deformation and Its Spatial Characteristics from the Regional Arctic System Model |
title_sort |
evaluation of sea ice deformation and its spatial characteristics from the regional arctic system model |
publishDate |
2012 |
url |
http://www.dtic.mil/docs/citations/ADA576271 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA576271 |
long_lat |
ENVELOPE(-63.071,-63.071,-70.797,-70.797) |
geographic |
Arctic Curl |
geographic_facet |
Arctic Curl |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
DTIC |
op_relation |
http://www.dtic.mil/docs/citations/ADA576271 |
op_rights |
Approved for public release; distribution is unlimited. |
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1766320451536027648 |