LCL: LCL

In NCAR/Ranadu: Functions for use with RAF aircraft data files

LCL

Description

Find the pressure and temperature at the lifted condensation level

Usage

LCL(p, t, r)

Arguments

p	The pressure [hPa] of the air parcel
t	The temperature [degC] of the air parcel
r	The water vapor mixing ratio of the air parcel [dimensionless, NOT g/kg]

Details

Solves iteratively for the pressure at which, for the given potential temperature and mixing ratio, the equilibrium vapor pressure at that pressure level would match that required to give the specified mixing ratio. Note for comparison the Bolton formula: (2840 / 3.5*log(T+273.15)-log(e)-4.805)+55

Value

A two-element vector giving the pressure [hPa]and temperature [degC] at the LCL

Author(s)

William Cooper

Examples

X <- LCL (850, 10, 0.08)  ## expect (825.62, 7.659)

NCAR/Ranadu documentation built on Jan. 27, 2023, 1:09 a.m.