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32nd Annual Arctic Workshop Abstracts
March 14-16, 2002
INSTAAR, University of Colorado at Boulder

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HIGH RESOLUTION JULY MEAN AIR TEMPERATURE DATA FOR THE CANADIAN ARCTIC ARCHIPELAGO, 1957-2001

AUTHORS

ATKINSON, DAVID E. . University of Ottawa.

A new set of July mean air temperature data from a high-resolution topoclimatic model will soon be available for the Canadian Arctic Archipelago and the northern coast of North America. Data are available on a projected grid with a roughly 1 km x 1 km spatial resolution for the years 1957 through 2001. The spatial basis of the data grid is the US Geological Survey GTOPO30 digital elevation model. Data native format is an IDRISI geographic information system raster format, which is a simple ASCII matrix with a separate header file that is easy to use.

Initial temperature estimates were obtained by integrating upper air temperature data over both the model spatial domain and the required time period. Initial estimates were then modified by site elevation and proximity to the potential influence of maritime effects, implemented by modeling periods of low-level advection, and ice fields.

Correlations between model estimates and independent surface observations from Meteorological Service of Canada weather stations and Polar Continental Shelf Project research camps are good, indicating consistent, reliable model operation.

 

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