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Nitrate sensors optically measure the amount of nitrate (NO3-) dissolved in seawater by examining its absorption of ultraviolet (UV) light. The optical sensor provides fast response measurements, allowing for the sensor to be deployed on profilers, gliders, and AUVs.

Data Products

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

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
NUTNRA Satlantic Deep SUNA
NUTNRJ Satlantic SUNA V2
NUTNRM Satlantic SUNA V2
NUTNRN Satlantic Deep SUNA

Primary Science Discipline

Research Themes


Access Data
NUTNR on the Data Portal