Air-Sea Gas Fluxes and Remineralization From a Novel Combination of pH and O2 Sensors on a Glider.
Average rating votes
Humphreys, Matthew P.
Bakker, Dorothee C. E.
Lee, Gareth A.
Mowlem, Matt Charles
MetadataShow full item record
Accurate, low-power sensors are needed to characterize biogeochemical variability on underwater glider missions. However, the needs for high accuracy and low power consumption can be difficult to achieve together. To overcome this difficulty, we integrated a novel sensor combination into a Seaglider, comprising a spectrophotometric lab-on-a-chip (LoC) pH sensor and a potentiometric pH sensor, in addition to the standard oxygen (O2) optode. The stable, but less frequent (every 10 min) LoC data were used to calibrate the high-resolution (1 s) potentiometric sensor measurements. The glider was deployed for a 10-day pilot mission in August 2019. This represented the first such deployment of either type of pH sensor on a glider. The LoC pH had a mean offset of +0.005±0.008 with respect to pH calculated from total dissolved inorganic carbon content, c(DIC), and total alkalinity, AT, in co-located water samples. The potentiometric sensor required a thermal-lag correction to resolve the pH var.....
JournalFrontiers in Marine Science
Sustainable Development Goals (SDG)14.a
Essential Ocean Variables (EOV)N/A
Maturity LevelPilot and Demonstrated
Spatial CoverageNorth Sea
CitationPossenti, L., Humphreys, M.P., Bakker, D.C.E., Cobas-García, M., Fernand, L., Lee, G.A., Pallottino, F., Loucaides, S., Mowlem, M.C. and Kaiser, J. (2021) Air-Sea Gas Fluxes and Remineralization from a Novel Combination of pH and O2 Sensors on a Glider. Frontiers in Marine Science, 8:696772, 19pp. DOI: 10.3389/fmars.2021.696772
The following license files are associated with this item: