ARCTIC Winter Offshore/Onshore Wind Differences in

ABSTRACT. Acquisition of two 38-day wind data sets collected over a fast-ice shelf and at a nearby coastal weather station (Kuujjuarapik) in Hudson Bay allowed the calculation for the first time of an offshore/onshore wind speed ratio for an ice-covered environment. Mean wind over the ice was 29 % h...

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Bibliographic Details
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Published: 1989
Subjects:
Key words
Arctic
Subarctic
weather
winds
Hudson Bay
comparison
orographic effects
offshore
ice shelf
Hudson
Kuujjuarapik
Ice Shelf
Sea ice
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.497.3849
http://pubs.aina.ucalgary.ca/arctic/Arctic43-1-55.pdf
Description
Summary:ABSTRACT. Acquisition of two 38-day wind data sets collected over a fast-ice shelf and at a nearby coastal weather station (Kuujjuarapik) in Hudson Bay allowed the calculation for the first time of an offshore/onshore wind speed ratio for an ice-covered environment. Mean wind over the ice was 29 % higher than at the coast, compared to values of 65 % for open ocean locations. This reflects the effect of the higher drag coefficient of the sea ice that more strongly attenuates the wind than does the sea surface. The data set also allowed the evaluation of the change in the wind field by local topography. Thus, a strong orographic effect was found in the SW quadrant, as winds of less than 5 ms " were deflected toward the SE and W.

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