Articles | Volume 14, issue 5
https://doi.org/10.5194/bg-14-1305-2017
https://doi.org/10.5194/bg-14-1305-2017
Technical note
 | 
15 Mar 2017
Technical note |  | 15 Mar 2017

Technical note: Coupling infrared gas analysis and cavity ring down spectroscopy for autonomous, high-temporal-resolution measurements of DIC and δ13C–DIC

Mitchell Call, Kai G. Schulz, Matheus C. Carvalho, Isaac R. Santos, and Damien T. Maher

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (Editor review) (08 Feb 2017) by Jack Middelburg
AR by Svenja Lange on behalf of the Authors (10 Feb 2017)  Author's response    Manuscript
ED: Publish subject to technical corrections (13 Feb 2017) by Jack Middelburg
AR by Mitchell Call on behalf of the Authors (14 Feb 2017)  Author's response    Manuscript
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Short summary
The conventional method for determining dissolved inorganic carbon (DIC) and it carbon stable isotope ratio (δ13C–DIC) can be a laborious process which can limit sampling frequency. This paper presents a new approach to autonomously determine DIC & δ13C–DIC at high temporal resolution. The simple method requires no customised design. Instead it uses two commercially available instruments and achieved a sampling resolution of 16 mins with precision and accuracy comparable to conventional methods.
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