TRPAUS.f File Reference

trpaus() computes tropopause level fields. More...

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Functions/Subroutines
subroutine	trpaus (ptrop, ttrop, ztrop, utrop, vtrop, shtrop)
	Computes tropopause data.

Detailed Description

trpaus() computes tropopause level fields.

This routine computes tropopause data. At each mass point a surface up search is made for the first occurrence of a three layer mean lapse rate less than or equal to a critical lapse rate. This critcal lapse rate is 2 deg/km. This is in accord with the WMO definition of a tropopause. A maximum tropopause pressure of 500mb is enforced. Once the tropopause is located in a column, pressure, temperature, u and v winds, and vertical wind shear are computed.

Program history log:

Date	Programmer	Comments
1992-12-22	Russ Treadon	Initial
1997-03-06	Geoff Manikin	Changed criteria for determining the tropopause and added height
1998-06-15	T Black	Conversion from 1-D TO 2-D
2000-01-04	Jim Tuccillo	MPI Version
2002-04-23	Mike Baldwin	WRF Version
2019-10-30	Bo Cui	ReMOVE "GOTO" STATEMENT
2021-09-13	JESSE MENG	2D DECOMPOSITION

Author

Russ Treadon W/NP2

Date

1992-12-22

Definition in file TRPAUS.f.

Function/Subroutine Documentation

trpaus()

subroutine trpaus	(	real, dimension(im,jm), intent(out)	ptrop,
		real, dimension(im,jm), intent(out)	ttrop,
		real, dimension(im,jm), intent(out)	ztrop,
		real, dimension(im,jm), intent(out)	utrop,
		real, dimension(im,jm), intent(out)	vtrop,
		real, dimension(im,jm), intent(out)	shtrop
	)

Computes tropopause data.

Parameters

[out]	PTROP	Tropopause pressure.
[out]	TTROP	Tropopause temperature.
[out]	ZTROP	Tropopause height.
[out]	UTROP	Tropopause u wind component.
[out]	VTROP	Tropopause v wind component.
[out]	SHTROP	Vertical wind shear at tropopause.

Definition at line 36 of file TRPAUS.f.