Surface underway dissolved O2/N2 saturation ratio and O2 concentration data collected in the Bering, Beaufort, and Chukchi Seas in 2021 on R/V Sikuliaq

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 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, Laurie Juranek ([e-mail]) for questions about use. Data were collected between August 12th and November 23rd, 2021 from the surface underway seawater supply of R/V Sikuliaq on 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 Vaisala PTU307 are also provided.本数据集包含白令海、楚科奇海与波弗特海的表层溶解氧（dissolved O₂）浓度及溶解氧/氮气饱和度比值，并附带相关辅助信息。该数据集可用于解析调控表层海洋溶解氧浓度的物理与生物过程平衡关系，亦可用于计算生物群落净生产速率。本数据采集工作获得美国国家科学基金会（National Science Foundation, NSF）奖项编号1928684“基于机会船舶开展北极群落净生产力高分辨率观测”项目资助。本数据集仅经过有限处理即向科研群体发布，未来或将推出强化数据质量管控的更新版本。若有使用相关疑问，请联系项目首席研究员（Principal Investigator, PI）劳里·尤拉内克（Laurie Juranek），邮箱：[e-mail]。数据采集工作于2021年8月12日至11月23日期间，通过R/V锡利夸克号（Sikuliaq）的表层走航海水供给系统完成，涉及多次科考航次。数据采集使用了Pro-Oceanus miniTDGP（总溶解气体压力仪，total dissolved gas pressure instrument）、SBE38温度传感器、SBE45温盐记录仪以及Aanderaa 4330光学溶解氧传感器，采集过程中曾因仪器维护或水流中断出现过间歇性数据缺失。本数据集同时提供来自Vaisala PTU307的海平面气压数据。