Finds dissolved oxygen concentration in equilibrium with water-saturated air.
Usage
oxySol(t, S, P = NULL)
Arguments
t
temperature, degrees C
S
salinity, on the Practical Salinity Scale
P
pressure, atm
Details
Calculations are based on the approach of Benson and Krause (1984), using Green and Carritt's (1967) equation for dependence of water vapor partial pressure on t and S. Equations are valid for temperature in the range 0-40 C and salinity in the range 0-40.
Value
Dissolved oxygen concentration in mg/L at 100% saturation. If P = NULL, saturation values at 1 atm are calculated.
References
Benson, B.B. and Krause, D. (1984) The concentration and isotopic fractionation of oxygen dissolved in fresh-water and seawater in equilibrium with the atmosphere. Limnology and Oceanography29, 620-632.
Green, E.J. and Carritt, D.E. (1967) New tables for oxygen saturation of seawater. Journal of Marine Research25, 140-147.
Examples
# Convert DO into % saturation for 1-m depth at Station 32.
# Use convention of expressing saturation at 1 atm.
sfb1 <- subset(sfbay, depth == 1 & stn == 32)
dox.pct <- with(sfb1, 100 * dox/oxySol(temp, sal))
summary(dox.pct)