ARSV Laurence M. Gould Atmospheric O2 and CO2 Measurements. Version 1.0

This data set includes measurements of O2 and CO2 concentration, with O2 reported as deviations in the O2/N2 ratio on the SIO2023 O2/N2 scale defined on August 30, 2024, and CO2 as ppm dry air mole fraction on the WMO X2019 scale. The shipboard O2 and CO2 measurements were made using a fuel-cell method for O2 and a dual-cell non-dispersive infrared gas analyzer for CO2, and are reported at 1-minute frequency.