Articles | Volume 10, issue 11
Atmos. Meas. Tech., 10, 4537–4560, 2017
https://doi.org/10.5194/amt-10-4537-2017
Atmos. Meas. Tech., 10, 4537–4560, 2017
https://doi.org/10.5194/amt-10-4537-2017

Research article 24 Nov 2017

Research article | 24 Nov 2017

A new instrument for stable isotope measurements of 13C and 18O in CO2 – instrument performance and ecological application of the Delta Ray IRIS analyzer

Jelka Braden-Behrens et al.

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AR by Jelka Braden-Behrens on behalf of the Authors (07 Sep 2017)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (11 Sep 2017) by Frank Keppler
ED: Publish as is (13 Oct 2017) by Frank Keppler
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Short summary
Here we present the instrument characteristics and field applicability of the newly developed Delta Ray analyzer for stable isotope measurements in CO2. We used this analyzer to measure the concentration and the isotopic composition of CO2 exchange in a managed beech forest for 3 months in autumn 2015. During this period an early frost event occurred and our measurements suggest that this short event strongly influenced the measured isotopic composition of CO2 exchange.