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Dissolved Oxygen

A Dissolved Oxygen sensor measures the concentration of oxygen molecules that have been dissolved, or mixed, into seawater (Dissolved Oxygen Concentration).
There are a variety of Dissolved Oxygen sensors within the OOI program with unique capabilities. Some Dissolved Oxygen sensors are configured to measure dissolved oxygen concentrations on shallow coastal profilers through rapid oxygen gradients (DOFST, the Sea-Bird SBE 43 and 43F), while others are configured for use on mobile assets, deep profilers, and moorings (DOSTA, the Aanderaa optode).

Data Products

This instrument measures the following data products. Select a data product's name to learn more.

The algorithm code used to generate this instrument's data products is also available in the ion-functions GitHub repository.

Instrument Models & Deployed Locations

The OOI includes the following instrument makes and models for this instrument type. Follow the links below to find out where in the OOI this instrument has been deployed. You'll also find quick links for each instrument to Data portal, where you can plot and access data.

Series Make Model
DOFSTA Sea-Bird SBE 43
DOSTAD Aanderaa Optode 4831
DOSTAJ Aanderaa Optode 4831
DOSTAL Aanderaa Optode 4330
DOSTAM Aanderaa Optode 4831
DOSTAN Aanderaa Optode 4330

An Aanderaa optode optical oxygen sensor, used by OOI for stable oxygen measurements. Photo credit:

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