W3FT06

The W3FT06 routine converts a southern hemisphere 2.5 degree
           lat., lon. 145 by 37 grid to a polar stereographic
           65 by 65 grid. the polar stereographic map projection
           is true at 60 deg. south, the mesh length is 381 km. and
           the oriention is 260 deg. west (100E).

USAGE:  CALL W3FT06(ALOLA,APOLA,W1,W2,LINEAR)

   Input variables:
      ALOLA     145*37 DEG 2.5 LAT,LON GRID S. HEMI.
                       5365 POINT GRID IS TYPE 30 OR 1E HEX O.N. 84
      LINEAR    1 LINEAR INTERPOLATION , NE.1 BIQUADRATIC
 
   Output variables:
      APOLA     65*65 GRID OF SOUTHERN HEMI.
                       4225 POINT GRID IS TYPE 28 OR 1C HEX O.N. 84
      W1        65*65 SCRATCH FIELD
      W2        65*65 SCRATCH FIELD
      FT06F001  ERROR MESSAGE
 
REMARKS:
    1. W1 AND W2 ARE USED TO STORE SETS OF CONSTANTS WHICH ARE
       REUSABLE FOR REPEATED CALLS TO THE SUBROUTINE. IF THEY ARE
       OVER WRITTEN BY THE USER, A WARNING MESSAGE WILL BE PRINTED
       AND W1 AND W2 WILL BE RECOMPUTED.
 
    2. WIND COMPONENTS ARE NOT ROTATED TO THE 65*65 GRID ORIENTATION
       AFTER INTERPOLATION. YOU MAY USE W3FC10 TO DO THIS.
 
    3. THE GRID POINTS VALUES ON THE EQUATOR HAVE BEEN EXTRAPOLATED
       OUTWARD TO ALL THE GRID POINTS OUTSIDE THE EQUATOR ON THE 65*65
       GRID (ABOUT 1100 POINTS).
 
    4. YOU SHOULD USE THE CRAY VECTORIZED VERION W3FT06V ON THE CRAY
       IT HAS 3 PARAMETERS IN THE CALL, RUNS ABOUT TIMES FASTER, USES
       MORE MEMORY.
 
 
W3lib.tar Library contains Fortran 90 decoder/encoder routines for GRIB edition 1. (Fortran90)
Date posted: 2/22/2007