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These data files contain surface dissolved O2 triple isotope (d170, d18O, 17D) and dissolved O2/Ar saturation ratio collected on the 2022 US Synoptic Arctic Survey Cruise in September and October 2022. 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 2053116 “Collaborative Research: Taking the Pulse of the Arctic Ocean - A US Contribution to the International Synoptic Arctic Survey” Data were collected between September 3rd 2022 and October 25th, 2022 from the surface science seawater supply of USCGC (United States Coast Guard Cutter) Healy on Cruise ID HLY2202. The cruise departed from Dutch Harbor, AK (Alaska) and disembarked in Dutch Harbor, AK and sampled waters of the Bering and Chukchi Seas, the Canada Basin up to the North Pole, and then a return path through the Makarov Basin before sampling the Chukchi Shelf again and returning to port. 

These data files contain surface dissolved oxygen (O2) concentration and dissolved oxygen/argon (O2/Ar) saturation ratio collected on the 2022 US (United States) Synoptic Arctic Survey Cruise in September and October 2022. 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 National Science Foundation (NSF) Award 2053116 “Collaborative Research: Taking the Pulse of the Arctic Ocean - A US Contribution to the International Synoptic Arctic Survey” Data were collected between September 3rd 2022 and October 25th, 2022 from the surface science seawater supply of United States Coast Guard Cutter (USCGC) Healy on Cruise ID HLY2202. Data were collected near-continuously using an equilibrated inlet mass spectrometer (EIMS) and an Aanderaa optode, with occasional outages for instrument maintenance or flow disruptions due to ice blockage of the underway seawater system. The cruise departed from Dutch Harbor, Alaska (AK) and disembarked in Dutch Harbor, AK and sampled waters of the Bering and Chukchi Seas, the Canada Basin up to the North Pole, and then a return path through the Makarov Basin before sampling the Chukchi Shelf again and returning to port. 

This dataset provides calibrated, high-resolution dissolved oxygen measurements from CTD (conductivity, temperature, and depth) profiles collected during the 2022 HLY2202 expedition aboard the USCGC (United States Coast Guard Cutter) Healy across the Arctic Ocean. The product includes corrected dissolved oxygen concentrations, oxygen saturation, and apparent oxygen utilization (AOU), derived from Winkler-referenced calibration of CTD oxygen sensors. The dataset spans the Canada and Makarov Basin and captures the vertical structure of oxygen from surface to deep waters. These data are intended to support biogeochemical investigations of ventilation, water mass transformation, and remineralization processes that drive oxygen variability in the Arctic Basin. The calibrated oxygen fields enable direct comparison with historical hydrographic surveys, facilitating assessment of spatial gradients, vertical oxygen structure, and decadal-scale changes in dissolved oxygen. The dataset is distributed in NetCDF format to support reproducible analysis and long-term archival.