Estimate Atmospheric Pressure in an rsk Object

Estimate atmospheric pressure in an rsk object. Pressures must be in decibars for this to work. First, a subset of pressures is created, in which the range is sap-dp to sap+dp. Here, sap=10.1325 dbar is standard sealevel atmospheric pressure. Within this window, three measures of central tendency are calculated: the median, the mean, and a weighted mean that has weight given by \(exp(-2*((p-sap)/dp)^2)\).

Usage

rskPatm(x, dp = 0.5)

Arguments

x

an rsk object.

dp

Half-width of pressure window to be examined (in decibars).

Value

A list of four estimates: sap, the median, the mean, and the weighted mean.

See also

The documentation for rsk explains the structure of rsk objects, and also outlines the other functions dealing with them.

Other things related to rsk data: [[,rsk-method, [[<-,rsk-method, as.rsk(), ctdFindProfilesRBR(), plot,rsk-method, read.rsk(), rsk, rsk-class, rskToc(), subset,rsk-method, summary,rsk-method

Author

Dan Kelley

Examples

library(oce)
data(rsk)
print(rskPatm(rsk))
#> [1] 10.1325 10.1325 10.1325 10.1325