Sensors and Systems for in situ Observations of Marine Carbon Dioxide System Variables
| Autor: | Craig McNeil, Liliane Merlivat, Robert H. Byrne, F.L. Sayles, R T Short, Todd R. Martz, Ryan J. Bell, DeGrandpre, Peer Fietzek |
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| Přispěvatelé: | Hall, J., Harrison, D.E., Stammer, D. |
| Rok vydání: | 2010 |
| Předmět: |
Hydrology
010504 meteorology & atmospheric sciences business.industry 010401 analytical chemistry Alkalinity Sampling (statistics) 01 natural sciences 0104 chemical sciences Carbon cycle Characterization (materials science) chemistry.chemical_compound chemistry 13. Climate action Carbon dioxide Dissolved organic carbon Fugacity 14. Life underwater Temporal scales Process engineering business 0105 earth and related environmental sciences |
| Zdroj: | Proceedings of OceanObs’09: Sustained Ocean Observations and Information for Society., ed. by Hall, J., Harrison, D. E. and Stammer, D. ESA Publication, WPP-306 . OceanObs'09, Venice, Italy, p. 8. |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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