W3FT201

The W3FT201 routine converts a global 1.0 degree lat.,lon.
            361 by 181 grid to a polar stereographic 65 by 65 grid.
            the polar stereographic map projection is true at 60 deg.
            N. , The mesh length is 381 km. and the oriention is
            105 deg. W. This is the same as w3ft43v except the 
            oriention is 105 deg. W.

USAGE:  CALL W3FT201(ALOLA,APOLA,INTERP)

   Input arguments:
      ALOLA  - 361*181 GRID 1.0 DEG. LAT,LON GRID
               65341 POINT GRID. 360 * 181 ONE DEGREE
               GRIB GRID 3 WAS FLIPPED, GREENWISH ADDED
               TO RIGHT SIDE TO MAKE 361 * 181.
      INTERP - 1 LINEAR INTERPOLATION , NE.1 BIQUADRATIC

   Output arguments:
      APOLA - 65*65 GRID OF NORTHERN HEMISPHERE.
              4225 POINT GRID IS AWIPS GRID TYPE 201

   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 65*65 GRID ORIENTATION
       AFTER INTERPOLATION. YOU MAY USE W3FC08 TO DO THIS.

    3. ALL POINTS BELOW EQUATOR ARE ON THIS GRID.

 


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

   Date posted: 2/22/2007