The Operational Determination of Wind Stress on the Arctic Ice Pack.

The performance of routine FNWC sea level pressure analyses and forecasts in the Beaufort Sea is evaluated for driving an ice model. The geostrophic winds determined from the FNWC pressure fields are compared to geostrophic winds determined from the AIDJEX experiment observations. A simulation with...

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Bibliographic Details
Main Author: Ashim,Larry Dennis
Other Authors: NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
Format: Text
Language:English
Published: 1977
Subjects:
Meteorology
Snow
Ice and Permafrost
*GEOSTROPHIC WIND
*ARCTIC REGIONS
*PACK ICE
MATHEMATICAL MODELS
FORECASTING
THESES
METEOROLOGICAL DATA
DRIFT
WIND SHEAR
BAROMETRIC PRESSURE
AIR WATER INTERACTIONS
SEA LEVEL
SEA ICE
BEAUFORT SEA
ICE REPORTING
Arctic
Beaufort Sea
Ice
ice pack
permafrost
Sea ice
Online Access:http://www.dtic.mil/docs/citations/ADA047319
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA047319
Description
Summary:The performance of routine FNWC sea level pressure analyses and forecasts in the Beaufort Sea is evaluated for driving an ice model. The geostrophic winds determined from the FNWC pressure fields are compared to geostrophic winds determined from the AIDJEX experiment observations. A simulation with the AIDJEX model has been run using FNWC sea level pressure analysis fields for the period 15 to 25 May 1975 and compared to the AIDJEX results. RMS sea level pressure errors of about 3 mb were found with analysis errors reduced by about 1 mb when one AIDJEX observation was included in the analysis. Geostrophic winds had speed differences of about 40% and direction differences of about 50 deg. The FNWC simulation with the AIDJEX model produced a position error of about 7 km for one station over the ten day run. Recommendations are made to improve the FNWC hemispheric fields in the Arctic for application to ice forecasting. (Author)

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