Articles | Volume 12, issue 6
Atmos. Meas. Tech., 12, 3365–3381, 2019
https://doi.org/10.5194/amt-12-3365-2019

Special issue: Advances in cavity-based techniques for measurements of atmospheric...

Atmos. Meas. Tech., 12, 3365–3381, 2019
https://doi.org/10.5194/amt-12-3365-2019

Research article 26 Jun 2019

Research article | 26 Jun 2019

The ICAD (iterative cavity-enhanced DOAS) method

Martin Horbanski et al.

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Martin Horbanski on behalf of the Authors (21 May 2019)  Author's response    Manuscript
ED: Publish as is (22 May 2019) by Katherine Manfred
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Short summary
ICAD allows a precise in situ measurement of gases like NO2 in a relatively simple and compact setup. The main advantage in comparison to most other optical methods is that it does not require a stable total light intensity. This allows a simpler and mobile instrument setup and additionally it features no observed cross-interferences. We validated the high quality for an ICAD NO2 instrument in different inter-comparisons with a detection limit of 0.02 ppbv.