w3fc02.f File Reference

Grid U,V wind comps. More...

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Functions/Subroutines
subroutine	w3fc02 (ffid, ffjd, fgu, fgv, dir, spd)
	Given the grid-oriented wind components on a northern hemisphere polar stereographic grid point, compute the direction and speed of the wind at that point.

Detailed Description

Grid U,V wind comps.

to dir. and speed.

Author

John Stackpole

Date

1981-12-30

Definition in file w3fc02.f.

Function/Subroutine Documentation

w3fc02()

subroutine w3fc02	(		ffid,
			ffjd,
			fgu,
			fgv,
			dir,
			spd
	)

Given the grid-oriented wind components on a northern hemisphere polar stereographic grid point, compute the direction and speed of the wind at that point.

Input winds at the north pole point are assumed to have their components follow the wmo standards for reporting winds at the north pole. (see office note 241 for wmo definition). Output direction will follow wmo convention.

Program history log:

• John Stackpole 1981-12-30
• Ralph Jones 1989-01-20 Convert to microsoft fortran 4.10.
• Ralph Jones 1990-06-11 Convert to sun fortran 1.3.
• Ralph Jones 1991-03-30 Convert to silicongraphics fortran.
• Ralph Jones 1993-03-29 Add save statement.
• Ralph Jones 1995-08-09 Compile on cray.

Parameters

[in]	FFID	REAL*4 I(north pole) - i(point).
[in]	FFJD	REAL*4 J(north pole) - j(point).
[in]	FGU	REAL*4 Grid-oriented u-component.
[in]	FGV	REAL*4 Grid-oriented v-component.
[out]	DIR	REAL*4 Wind direction, degrees.
[out]	SPD	REAL*4 Wind speed.

Note

This job will not vectorize on a cray.

Author

John Stackpole

Date

1981-12-30

Definition at line 32 of file w3fc02.f.