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W3FT207

The W3FT207 routine converts a northern hemisphere 1.0 
            degree lat.,lon. 361 by 91 grid to a polar 
            stereographic 49 by 35 grid. The polar stereographic
            map projection is true at 60 deg. N. , the mesh
            length is 95.25 km. and the oriention is 150 deg. W.

USAGE:  CALL W3FT207(ALOLA,APOLA,INTERP)

   Input arguments:
      ALOLA  - 361*91 GRID 1.0 DEG. LAT,LON GRID N. HEMI.
               32851 POINT GRID. 360 * 181 ONE DEGREE
               GRIB GRID 3 WAS FLIPPED, GREENWISH ADDED
               TO RIGHT SIDE AND CUT TO 361 * 91.
      INTERP - 1 LINEAR INTERPOLATION , NE.1 BIQUADRATIC

   Output arguments:
      APOLA - 49*35 GRID OF NORTHERN HEMISPHERE.
              1715 POINT GRID IS AWIPS GRID TYPE 207

   Input files:  NONE

   Output files: ERROR MESSAGE TO FORTRAN OUTPUT FILE

REMARKS:
    1. W1 AND W2 ARE USED TO STORE SETS OF CONSTANTS WHICH ARE
       REUSABLE FOR REPEATED CALLS TO THE SUBROUTINE.

    2. WIND COMPONENTS ARE NOT ROTATED TO THE 49*35 GRID ORIENTATION
      AFTER INTERPOLATION. YOU MAY USE W3FC08 TO DO THIS.

 


  W3lib.tar
  Library contains Fortran 90 decoder/encoder
   routines for GRIB edition 1. (Fortran90) 

   Date posted: 2/22/2007