KingProbe: KingProbe

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

KingProbe

Description

Calculates liquid water content from King Probe

Usage

KingProbe(Power, TAS, p, T, N)

Arguments

Power	The power in watts measured by the King probe (Watts)
TAS	The true airspeed (m/s)
p	Pressure (hPa)
T	Temperature (deg. C)
N	Droplet concentration (e.g., from a CDP)

Details

Calculates an estimate of the dry-probe power and subtracts this from the total power, then converts the resulting residual power to a measure of the liquid water content. If applied to successive measurements, the routine maintains an estimate of the dry-air relationship between Nusselt number and Reynolds number and uses that to adjust the zero reading when out of cloud (as indicated by a measured droplet concentration falling below some threshold).

Value

Liquid water content (g/m^3)

Author(s)

William Cooper

Examples

## Not run: lwc <- KingProbe (25, 180, 700, 10, 0) 
## Not run: lwc <- KingProbe (RAFdata$PLWC, RAFdata$TASX, RAFdata$PSXC, 
RAFdata$ATX, RAFdata$CONCD_LWII)
## End(Not run)

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