w3ft202.f File Reference

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Functions/Subroutines
subroutine	w3ft202 (ALOLA, APOLA, INTERP)
	SUBROUTINE: W3FT202 CONVERT (361,91) GRID TO (65,43) N. More...

Function/Subroutine Documentation

w3ft202()

subroutine w3ft202	(	real, dimension(361,91)	ALOLA,
		real, dimension(npts)	APOLA,
			INTERP
	)

SUBROUTINE: W3FT202 CONVERT (361,91) GRID TO (65,43) N.

HEMI. GRID AUTHOR: JONES,R.E. ORG: W342 DATE: 94-05-18

ABSTRACT: CONVERT A NORTHERN HEMISPHERE 1.0 DEGREE LAT.,LON. 361 BY 91 GRID TO A POLAR STEREOGRAPHIC 65 BY 43 GRID. THE POLAR STEREOGRAPHIC MAP PROJECTION IS TRUE AT 60 DEG. N. , THE MESH LENGTH IS 190.5 KM. AND THE ORIENTION IS 105 DEG. W.

PROGRAM HISTORY LOG: 94-05-18 R.E.JONES

USAGE: CALL W3FT202(ALOLA,APOLA,INTERP)

INPUT ARGUMENTS: ALOLA - 361*91 GRID 1.0 LAT,LON GRID N. HEMISPHERE 32851 POINT GRID IS O.N. 84 TYPE ?? OR ?? HEX INTERP - 1 LINEAR INTERPOLATION , NE.1 BIQUADRATIC

INPUT FILES: NONE

OUTPUT ARGUMENTS: APOLA - 65*43 GRID OF NORTHERN HEMISPHERE. 2795 POINT GRID IS AWIPS GRID TYPE 202

OUTPUT FILES: ERROR MESSAGE TO FORTRAN OUTPUT FILE

WARNINGS:

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*43 GRID ORIENTATION AFTER INTERPOLATION. YOU MAY USE W3FC08 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*43 GRID (ABOUT 1100 POINTS).

RETURN CONDITIONS: NORMAL SUBROUTINE EXIT

SUBPROGRAMS CALLED: UNIQUE : NONE

LIBRARY: ASIN , ATAN2

ATTRIBUTES: LANGUAGE: CRAY CFT77 FORTRAN MACHINE: CRAY C916-128, CRAY Y-MP8/864, CRAY Y-MP EL2/256

Definition at line 51 of file w3ft202.f.