Estimate atmospheric pressure in rsk record.

rskPatm(x, dp = 0.5)

## Arguments

x an rsk object. 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.

## Details

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 $$exp(-2*((p - sap) / dp)^2)$$.

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(), plot,rsk-method, read.rsk(), rsk-class, rskToc(), rsk, subset,rsk-method, summary,rsk-method
library(oce)