NGMFLD.f File Reference

ngmfld() computes layer mean NGM fields More...

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Functions/Subroutines
subroutine	ngmfld (rh4710, rh4796, rh1847, rh8498, qm8510)
	ngmfld() computes layer mean NGM fields

Detailed Description

ngmfld() computes layer mean NGM fields

This routine computes a handful of NGM layer mean fields. This is done to provide a fully complete ETA NGM look-alike output file.

The sigma (layer) fields computed by this routine are tabulated below.

Sigma (layer)	Field(s)
0.47191 - 1.00000	RH
0.47171 - 0.96470	RH
0.18019 - 0.47191	RH
0.84368 - 0.98230	RH
0.85000 - 1.00000	MCONV

where RH = Relative humidity and MCONV = Moisture convergence

Layer means are a summation over ETA layers mapping into The pressure range corresponding to the sigma range above. The calculation of these bounding pressures is done at each horizontal grid point based on the surface pressure. Each term in the summation is weighted by the thickness of the ETA layer. The final layer mean is this sum normalized by the total depth of the layer.

Parameters

[out]	RH4710	Sigma layer 0.47-1.00 mean relative humidity.
[out]	RH4796	Sigma layer 0.47-0.96 mean relative humidity.
[out]	RH1847	Sigma layer 0.18-0.47 mean relative humidity.
[out]	RH8498	Sigma layer 0.84-0.98 mean relative humidity.
[out]	QM8510	Sigma layer 0.85-1.00 mean moisture convergence.

Program History Log

Date	Programmer	Comments
1992-12-22	Russ Treadon	Initial
1993-07-27	Russ Treadon	Modified summation limits from 0.66*PSFC to 0.75*PSFC and 0.33*PSFC to 0.50*PSFC, where PSFC is the surfaces pressure. The reason for this change was recognition that in the LFM 0.33 and 0.66 were measured from the surface to the tropopause not the top of the model.
1993-09-13	Russ Treadon	RH calculations were made internal to the routine.
1996-03-04	Mike Baldwin	Change PW CALC to include CLD WTR
1998-06-16	T Black	Conversion from 1-D to 2-D
1998-08-17	Mike Baldwin	Compute RH over ice
1998-12-22	Mike Baldwin	Back out RH over ice
2000-01-04	Jim Tuccillo	MPI Version
2002-04-24	Mike Baldwin	WRF Version
2021-09-30	JESSE MENG	2D DECOMPOSITION

Author

Russ Treadon W/NP2

Date

1992-12-22

Definition in file NGMFLD.f.

Function/Subroutine Documentation

ngmfld()

subroutine ngmfld	(	real, dimension(ista_2l:iend_2u,jsta_2l:jend_2u), intent(out)	rh4710,
		real, dimension(ista_2l:iend_2u,jsta_2l:jend_2u), intent(out)	rh4796,
		real, dimension(ista_2l:iend_2u,jsta_2l:jend_2u), intent(out)	rh1847,
		real, dimension(ista_2l:iend_2u,jsta_2l:jend_2u), intent(out)	rh8498,
		real, dimension(ista_2l:iend_2u,jsta_2l:jend_2u), intent(out)	qm8510
	)

ngmfld() computes layer mean NGM fields

This routine computes a handful of NGM layer mean fields.

Parameters

[out]	RH4710	Sigma layer 0.47-1.00 mean relative humidity.
[out]	RH4796	Sigma layer 0.47-0.96 mean relative humidity.
[out]	RH1847	Sigma layer 0.18-0.47 mean relative humidity.
[out]	RH8498	Sigma layer 0.84-0.98 mean relative humidity.
[out]	QM8510	Sigma layer 0.85-1.00 mean moisture convergence.

Definition at line 59 of file NGMFLD.f.

References calmcvg().

Referenced by miscln().