Untitled - International Arctic Buoy Programme - University of ...

DUDX, DUDY,
DVDX, DVDY
are interpolated velocity derivatives expressed in
Cartesian coordinates. After multiplication by 10 -7 the
reported values have units of seconds -1 .
Note on Coordinates: The pressure and velocity derivatives are expressed
with respect to a rectangular coordinate system with the origin at the North Pole, the
x axis coinciding with the Greenwich meridian, and the y axis with the 90 ❍ E
meridian. The transformation from latitude and longitude to x and y is as follows:
x = 110.949 (90 - lat) cos (long)
y = 110.949 (90 - lat) sin (long)
where x and y are in kilometers and latitude and longitude are in degrees.
The authors can be contacted at the address below:
University of Washington
Polar Science Center
Applied Physics Laboratory
1013 N.E. 40th Street
Seattle, WA 98105 U.S.A.
Telephone (206) 543-1300
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