CALMCVG.f File Reference

Subroutine that computes moisture convergence. More...

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Functions/Subroutines
subroutine	calmcvg (q1d, u1d, v1d, qcnvg)
	Subroutine that computes moisture convergence.

Detailed Description

Subroutine that computes moisture convergence.

 Given specific humidity, Q, and the U-V wind components
 This routine evaluates the vector operation, 
                  DEL DOT (Q*VEC)
 where,
    DEL is the vector gradient operator,
    DOT is the standard dot product operator, and
    VEC is the vector wind.
 Minus one times the resulting scalar field is the 
 moisture convergence which is returned by this routine.

Parameters

[in]	Q1D	real Specific humidity at P-points (kg/kg).
[in]	U1D	real U-wind component (m/s) at P-points.
[in]	V1D	real V-wind component (m/s) at P-points.
[out]	QCNVG	real Moisture convergence (1/s) at P-points.

Program history log:

Date	Programmer	Comments
1993-01-22	Russ Treadon	Initial
1998-06-08	T Black	Conversion From 1-D To 2-D
2000-01-04	Jim Tuccillo	MPI Version
2002-04-23	Mike Baldwin	WRF C-Grid Version
2005-07-07	Binbin Zhou	Add RSM A Grid
2006-04-25	H Chuang	Bug fixes to correctly compute MC at boundaries
2021-04-01	J Meng	Computation on defined points only
2021-09-02	B CUI	REPLACE EXCH_F to EXCH
2021-09-30	J MENG	2D DECOMPOSITION

Author

Russ Treadon W/NP2

Date

1993-01-22

Definition in file CALMCVG.f.

Function/Subroutine Documentation

calmcvg()

subroutine calmcvg	(	real, dimension(ista_2l:iend_2u,jsta_2l:jend_2u), intent(in)	q1d,
		real, dimension(ista_2l:iend_2u,jsta_2l:jend_2u), intent(in)	u1d,
		real, dimension(ista_2l:iend_2u,jsta_2l:jend_2u), intent(in)	v1d,
		real, dimension(ista_2l:iend_2u,jsta_2l:jend_2u), intent(inout)	qcnvg
	)

Subroutine that computes moisture convergence.

Parameters

[in]	Q1D	real Specific humidity at P-points (kg/kg).
[in]	U1D	real U-wind component (m/s) at P-points.
[in]	V1D	real V-wind component (m/s) at P-points.
[out]	QCNVG	real Moisture convergence (1/s) at P-points.

Definition at line 43 of file CALMCVG.f.

References exch().

Referenced by bndlyr(), mdl2p(), mdlfld(), and ngmfld().