w3fa06.f File Reference

Calculation of the lifted index. More...

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Functions/Subroutines
subroutine	w3fa06 (p, t, rh, t5, tli)
	Given the pressure,temperature and relative humidity of an air parcel at some point in the atmosphere, calculate the lifted index of the parcel.

Detailed Description

Calculation of the lifted index.

Author

James Howcroft

Date

1978-07-01

Definition in file w3fa06.f.

Function/Subroutine Documentation

w3fa06()

subroutine w3fa06	(		p,
			t,
			rh,
			t5,
			tli
	)

Given the pressure,temperature and relative humidity of an air parcel at some point in the atmosphere, calculate the lifted index of the parcel.

Lifted index is defined as the temperature difference between the observed 500mb temperature and the supposed temperature that the parcel would obtain if it were lifted dry-adiabatically to saturation and then moved moist adiabatically to the 500mb level.

Program history log:

• James Howcroft 1978-07-01
• Ralph Jones 1989-01-24 Change to microsoft fortran 4.10.
• Ralph Jones 1990-06-08 Change to sun fortran 1.3.
• Ralph Jones 1991-03-29 Convert to silicongraphics fortran.
• Ralph Jones 1993-03-29 Add save statement.
• Ralph Jones 1995-09-25 Put in w3 library on cray.

Parameters

[in]	P	Parcel pressure in millibars.
[in]	T	Parcel temperataure in degrees celsius.
[in]	RH	Parcel relative humidity in percent.
[in]	T5	Temperature at the 500mb level in deg. celsius.
[out]	TLI	Lifted index in degrees celsius tli = 9.9999 iteration diverges; return to user program.

Author

James Howcroft

Date

1978-07-01

Definition at line 29 of file w3fa06.f.