airRho.Rd

% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/air.R
\name{airRho}
\alias{airRho}
\title{Air density}
\usage{
airRho(temperature, pressure, humidity)
}
\arguments{
\item{temperature}{\emph{in-situ} temperature [\eqn{^\circ}{deg}C]}

\item{pressure}{pressure in Pa (NOT kPa) -- ignored at present}

\item{humidity}{ignored at present}
}
\value{
\emph{In-situ} air density [kg/m\eqn{^3}{^3}].
}
\description{
Compute, \eqn{\rho}{rho}, the \emph{in-situ} density of air.
}
\details{
This will eventually be a proper equation of state, but for now it's just
returns something from wikipedia (i.e. not trustworthy), and not using
humidity.
}
\examples{
degC <- seq(0,30,length.out=100)
p <- seq(98,102,length.out=100) * 1e3
contour(x=degC, y=p, z=outer(degC,p,airRho), labcex=1)
}
\references{
National Oceanographic and Atmospheric Agency, 1976.  U.S.
Standard Atmosphere, 1976.  NOAA-S/T 76-1562.  (A PDF of this document may
be available at
\code{http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19770009539_1977009539.pdf}
or
\code{http://www.dtic.mil/cgi-bin/GetTRDoc?Location=U2&doc=GetTRDoc.pdf&AD=ADA035728}
although neither link has proven to be reliable.)
}
\author{
Dan Kelley
}