WETFRZLVL.f File Reference

wetfrzlvl() computes level of 0 wet bulb. More...

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Functions/Subroutines
subroutine	wetfrzlvl (twet, zwet)
	This routine computes the lowest height with a wet bulb temperature of freezing for each mass point on the eta grid.

Detailed Description

wetfrzlvl() computes level of 0 wet bulb.

Author

Geoff Manikin W/NP2

Date

2003-11-14

Definition in file WETFRZLVL.f.

Function/Subroutine Documentation

wetfrzlvl()

subroutine wetfrzlvl	(	real, dimension(ista_2l:iend_2u,jsta_2l:jend_2u,lm), intent(in)	twet,
		real, dimension(ista:iend,jsta:jend), intent(out)	zwet
	)

This routine computes the lowest height with a wet bulb temperature of freezing for each mass point on the eta grid.

The computed wet bulb zero height is the mean sea level height. At each mass point we move up from the surface to find the first eta layer where the tw is less than 273.16K. Vertical interpolation in temperature to the freezing temperature gives the freezing level height. Pressure and specific humidity are interpolated to this level and along with the temperature provide the freezing level relative humidity. If the surface (skin) temperature is below freezing, the routine uses surface based fields to compute the relative humidity.

Parameters

[in]	TWET	Wet bulb temperatures.
[out]	ZWET	Above ground level height of level with 0 wet bulb.

Program history log:

Date	Programmer	Comments
2003-11-14	Geoff Manikin	Initial
2004-12-06	Geoff Manikin	Corrected computation of SFC temperature
2005-03-11	H CHUANG	WRF Version
2021-07-26	W Meng	Restrict computation from undefined grids
2021-09-13	J Meng	2D DECOMPOSITION

Author

Geoff Manikin W/NP2

Date

2003-11-14

Definition at line 31 of file WETFRZLVL.f.