Oxygen saturation

RBR standard instruments support several sensors which measure dissolved oxygen concentration, including our own RBRcoda³ T.ODO and Aanderaa¹ Optode DO sensors.

When a sensor measures oxygen concentration, we derive oxygen saturation using the Garcia and Gordon equation. See Oxygen solubility in seawater: better fitting equations by H. E. Garcia and L. I. Gordon for details.

The units of measurement are %.

The Garcia and Gordon equation requires values for absolute temperature (in °K) and salinity, which are derived from measured temperature and conductivity. If your instrument does not measure these, default values of 0°C (273.15°K) and 35PSU will be used. Alternatively, enter temperature and conductivity manually in the table under the Parameter tab in Ruskin. See Ruskin User Guide: Standard Instruments³.

¹ Aanderaa sensors report either oxygen saturation or oxygen concentration, depending on the RBR instrument.