sw.lapse.rate {oce}R Documentation

Seawater lapse rate

Description

Compute adiabatic lapse rate

Usage

lr <- sw.lapse.rate(ctd)
lr <- sw.lapse.rate(S, t=NULL, p=NULL)

Arguments

ctd an object of class "ctd".
S salinity [PSU]
t in-situ temperature [degC]
p pressure [dbar]

Details

In the first form, the argument is a ctd object, from which the salinity, temperature and pressure values are extracted and used to for the calculation.

Compute lapse rate using Fofonoff and Millard's (1983) formula.

Value

Lapse rate [degC/m].

Author(s)

Dan Kelley

References

Fofonoff, P. and R. C. Millard Jr, 1983. Algorithms for computation of fundamental properties of seawater. Unesco Technical Papers in Marine Science, 44, 53 pp. (Section 7, pages 38-40)

Examples

 lr <- sw.lapse.rate(40, 40, 10000) # 3.255976e-4

[Package oce version 0.1.74 Index]