Evaluation of North Water Spring Ice Cover from Satellite Photographs

Satellite photographs for 2 years (March-September) have been used to study ice cover in the polynia called 'North Water', and to determine whether reliable ice maps could be made from satellite data without computer analysis. After early July the clouds become opaque and distinction betwe...

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Bibliographic Details
Main Authors: Aber,P. G., Vowinckel,E.
Other Authors: ATMOSPHERIC ENVIRONMENT SERVICE TORONTO (ONTARIO)
Format: Text
Language:English
Published: 1972
Subjects:
Physical and Dynamic Oceanography
Snow
Ice and Permafrost
(*SEA ICE
ARCTIC REGIONS)
AERIAL PHOTOGRAPHS
METEOROLOGICAL SATELLITES
PHOTOINTERPRETATION
CLOUD COVER
MELTING
FREEZING
THICKNESS
CANADA
SPACEBORNE PHOTOGRAPHY
Arctic
Canada
Ice
permafrost
Sea ice
Online Access:http://www.dtic.mil/docs/citations/AD0757582
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0757582
Description
Summary:Satellite photographs for 2 years (March-September) have been used to study ice cover in the polynia called 'North Water', and to determine whether reliable ice maps could be made from satellite data without computer analysis. After early July the clouds become opaque and distinction between cloud and ice is impossible. It was concluded that ice distribution for short periods could best be obtained by careful photograph interpretation. The most persistent open water is found at the northern edge, at about 78 degrees N. The southern ice edge is diffuse. The changes in ice cover in the North are mainly caused by freezing and melting, whereas ice transport is important in the southern area. (Author)

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