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Biogeosciences An interactive open-access journal of the European Geosciences Union
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BG | Volume 15, issue 13
Biogeosciences, 15, 4291–4299, 2018
https://doi.org/10.5194/bg-15-4291-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: The Ocean in a High-CO2 World IV

Biogeosciences, 15, 4291–4299, 2018
https://doi.org/10.5194/bg-15-4291-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

Technical note 16 Jul 2018

Technical note | 16 Jul 2018

Technical note: Continuous fluorescence-based monitoring of seawater pH in situ

John W. Runcie et al.
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Cited articles  
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Dickson, A. G. and Millero, F. J.: A comparison of the equilibrium constants for the dissociation of carbonic acid in seawater media, Deep-Sea Res., 34, 1733–1743, https://doi.org/10.1016/0198-0149(87)90021-5, 1987. 
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pH in coastal waters can be highly variable. A means to measure this variation is needed. A fully autonomous submersible fluorescence-based pH monitoring device incorporating additional sensors for temperature and salinity was deployed in or adjacent to a shallow estuary for week-long intervals. Results and calculated aragonite/calcite saturation values are presented. The device is well suited to continuous flow-through or stand-alone measurements with a precision of at least 0.007 pH units.
pH in coastal waters can be highly variable. A means to measure this variation is needed. A...
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