o2_unit_conv: Convert units of dissolved oxygen

In presens: Interface for PreSens Fiber Optic Data

Description

Given a measurement of dissolved O2, a list of commonly used units of oxygen partial pressures and concentrations are returned.

Usage

o2_unit_conv(o2 = 100, from = "percent_a.s.", to = "all", salinity = 35,
  temp = 25, air_pres = 1.013253)

Arguments

o2	a numeric vector of the O2 value(s). Default is 100.
from	a string describing the unit used to measure o2. Default is "percent_a.s." Options are: percent_a.s. (percent air saturation) percent_o2 hPa kPa torr mmHg inHg mg_per_l umol_per_l ml_per_l
to	a single string either describing the unit to which the conversion should be conducted (options are the same as in from), or the string "all" to return all units.
salinity	salinity of water sample (psu). Default is 35 psu.
temp	temperature of water sample (°C). Default is 25 °C.
air_pres	pressure of air overlying water sample (bar). Default is 1.013253 bar.

Details

Conversions are based on relationships and values from the package marelac.

Author(s)

Matthew A. Birk, [e-mail]

Examples

o2_unit_conv(o2 = 50)
o2_unit_conv(o2 = 1:50, from = "umol_per_l", to = "ml_per_l", salinity = 0, temp = 10,
	air_pres = 1.2)
o2_unit_conv()[c('mmHg','kPa')]

presens documentation built on May 1, 2019, 9:13 p.m.