The Submersible Ultraviolet Nitrate Analyzer (SUNA) is an optical sensor manufactured by Sea-Bird Scientific. It measures nitrate levels by detecting absorption in the ultraviolet light spectrum (190-370 nm). SUNA typically has a depth rating of 500 meters, with some models rated for 2000 meters for deep ocean monitoring. It is deployed from research vessels, floats, gliders, and other water-based platforms.

Instrument Details
- Optical/Photon
- Earth Science > Oceans > Ocean Chemistry > Nitrate
- Subsurface - Sea/Ocean/Water
- This data will be added in future versions.
- This data will be added in future versions.
- 810.2-1577.9 THz
- https://www.whoi.edu/fileserver.do?id=199144&pt=2&p=207009
Currently unavailable
Currently unavailable
Sea-Bird Scientific
Currently unavailable
Currently unavailable
Unpublished
![]() R/V Oceanus 3 Campaigns · 12 Instruments | ![]() Sub-Mesoscale Ocean Dynamics Experiment 2021—2023 Centered approximately 300 km offshore of San Francisco, California, USA 3 Deployments · 33 Data Products
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