Surface underway dissolved oxygen/nitrogen saturation ratio and oxygen concentration data collected in the Bering, Beaufort, and Chukchi Seas on research vessel Sikuliaq in 2024.

These data files contain surface dissolved O2 concentration and dissolved O2/N2 saturation ratio for the Bering, Chukchi, and Beaufort Seas with relevant accompanying ancillary information. The data are useful for understanding the balance of physical and biological controls driving surface ocean dissolved O2 concentrations and for calculating net biological community production rates. The data were collected with funding from NSF (National Science Foundation) Award 1928684 “High Resolution Observing of Arctic Net Community Productivity with Ships of Opportunity.” These data are being disseminated to the research community with limited processing; an updated version with enhanced data quality control may be available in the future. Please contact the PI (Principal Investigator), Laurie Juranek ([e-mail]) for questions about use. Data were collected between August 1st, 2024 and Sept 30th, 2024 from the surface underway seawater supply of R/V (research vessel) Sikuliaq over the course of several cruises. Data were collected using a Pro-Oceanus miniTDGP (total dissolved gas pressure instrument), a SBE38 temperature sensor, a SBE45 thermosalinograph, and an Aanderaa 4330 dissolved O2 optode, with occasional outages for instrument maintenance or flow disruptions. Sea level pressure data from a Paroscientific MET4A sensor are also provided.