CCGS Amundsen underway gas measurements, 2018-2019

Membrane inlet mass spectrometer (MIMS) and optode / gas tension device (GTD) gas systems were deployed on the CCGS Amundsen in 2018 and 2019. These autonomous sensors obtained measurements of dissolved O2, Ar, and N2 from the ship's underway seawater supply line at approximately 10-20 sec. intervals (<100 m spatial resolution). Raw and calibrated absolute gas concentrations, supersaturation anomalies, and gas ratios are reported.

Data from the underway gas instrumentation were combined with hydrographic observations of surface and depth-resolved temperature and salinity (obtained by the Amundsen Science research group) collected via underway thermosalinograph (TSG) and Rosette-mounted conductivity-temperature-depth (CTD) instrumentation.

Metadata Access
Creator Tortell, Philippe; Izett, Robert
Publisher Canadian Cryospheric Information Network
Contributor Polar Data Catalogue
Publication Year 2020
Rights Research programs, CCIN, or ArcticNet take no liability for the use or transmission of this data
OpenAccess true
Contact rizett(at); pdc(at)
Language English
Format Computer file
Discipline Biogeochemistry
Spatial Coverage (-105.480W, 50.000S, -48.400E, 81.840N)
Temporal Coverage Begin 2018-07-24T00:00:00Z
Temporal Coverage End 2019-08-15T00:00:00Z