Marine Science Faculty Publications

Sensors and Systems for in situ Observations of Marine Carbon Dioxide System Variables

Document Type

Conference Proceeding

Publication Date

2010

Digital Object Identifier (DOI)

https://doi.org/10.5270/OceanObs09.cwp.13

Abstract

Autonomous chemical sensors are required to document the marine carbon dioxide system's evolving response to anthropogenic CO2 inputs, as well as impacts on short- and long-term carbon cycling. Observations will be required over a wide range of spatial and temporal scales, and measurements will likely need to be maintained for decades. Measurable CO2 system variables currently include total dissolved inorganic carbon (DIC), total alkalinity (AT), CO2 fugacity (fCO2), and pH, with comprehensive characterization requiring measurement of at least two variables. These four parameters are amenable to in situ analysis, but sustained deployment remains a challenge. Available methods encompass a broad range of analytical techniques, including potentiometry, spectrophotometry, conductimetry, and mass spectrometry. Instrument capabilities (precision, accuracy, endurance, reliability, etc.) are diverse and will evolve substantially over the time that the marine CO2 system undergoes dramatic changes. Different suites of measurements/parameters will be appropriate for different sampling platforms and measurement objectives.

Was this content written or created while at USF?

Yes

Citation / Publisher Attribution

Sensors and Systems for in situ Observations of Marine Carbon Dioxide System Variables, in J. Hall, D.E. Harrison & D. Stammer (Eds.), Proceedings of OceanObs’09: Sustained Ocean Observations and Information for Society, v. 2, Venice, Italy, ESA Publication WPP-306, p. 21-25

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