w3ft06.f File Reference

Convert (145,37) to (65,65) s. More...

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Functions/Subroutines
subroutine	w3ft06 (alola, apola, w1, w2, linear)
	Convert a southern hemisphere 2.5 degree lat.,lon.

Detailed Description

Convert (145,37) to (65,65) s.

hemi. grid.

Author

Ralph Jones

Date

1984-06-18

Definition in file w3ft06.f.

Function/Subroutine Documentation

w3ft06()

subroutine w3ft06	(	real, dimension(145,37)	alola,
		real, dimension(4225)	apola,
		real, dimension(4225)	w1,
		real, dimension(4225)	w2,
			linear
	)

Convert 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. s.; The mesh length is 381 km. and the oriention is 260 deg. w.(100e).

Program History Log:

Date	Programmer	Comment
1984-06-18	Ralph Jones	Initial.
1991-07-30	Ralph Jones	Convert to cray cft77 fortran.
1992-05-02	Ralph Jones	Add save.

Parameters

[in]	ALOLA	145*37 deg 2.5 lat,lon grid s. hemi. 5365 point grid is type 30 or 1e hex o.n. 84.
[in]	LINEAR	1 linear interpolation , ne.1 biquadratic.
[out]	APOLA	65*65 grid of southern hemi. 4225 point grid is type 28 or 1c hex o.n. 84.
[out]	W1	65*65 scratch field.
[out]	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.

Author

Ralph Jones

Date

1984-06-18

Definition at line 40 of file w3ft06.f.