W3FC08

The W3FC08 routine computes the grid-oriented U and V wind components
           at the given the earth-oriented wind components on a Northern
           hemisphere polar stereographic grid point.

USAGE:    CALL W3FC08 (FFID, FFJD, FU, FV, FGU, FGV)

   Input argument list:
      FFID     - REAL   I-DISPLACEMENT FROM POINT TO NORTH POLE IN
                 GRID UNITS
      FFJD     - REAL   J-DISPLACEMENT FROM POINT TO NORTH POLE IN
                 GRID UNITS
      FU       - REAL   EARTH-ORIENTED U-COMPONENT, POSITIVE FROM WEST
      FV       - REAL   EARTH-ORIENTED V-COMPONENT, POSITIVE FROM EAST

   Output argument list:
      FGU      - REAL   GRID-ORIENTED U-COMPONENT.  MAY REFERENCE
                 SAME LOCATION AS FU.
      FGV      - REAL   GRID-ORIENTED V-COMPONENT.  MAY REFERENCE
                 SAME LOCATION AS FV.

REMARKS:
        FFID and FFJD may be calculated as follows:
               FFID = REAL(IP - I)
               FFJD = REAL(JP - J)
        Where (ip, jp) are the grid coordinates of the north pole and
        (i,j) are the grid coordinates of the point.

 
W3lib.tar Library contains Fortran 90 decoder/encoder routines for GRIB edition 1. (Fortran90)
Date posted: 2/22/2007