The ICAD (iterative cavity-enhanced DOAS) method

Horbanski, Martin; Pöhler, Denis; Lampel, Johannes; Platt, Ulrich

doi:https://doi.org/10.5194/amt-12-3365-2019

Articles | Volume 12, issue 6

https://doi.org/10.5194/amt-12-3365-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Advances in cavity-based techniques for measurements of atmospheric...

https://doi.org/10.5194/amt-12-3365-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 12, issue 6

Research article

|

26 Jun 2019

Research article |

| 26 Jun 2019

The ICAD (iterative cavity-enhanced DOAS) method

Martin Horbanski, Denis Pöhler, Johannes Lampel, and Ulrich Platt

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Final revised paper (published on 26 Jun 2019)
Supplement to the final revised paper
Preprint (discussion started on 22 Jan 2019)
Supplement to the preprint

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Reviewer's comments', Anonymous Referee #1, 12 Mar 2019
- AC1: 'Answers to all three reviews', Martin Horbanski, 21 May 2019
RC2: 'Review of 'The ICAD (Iterative Cavity Enhanced DOAS) Method' by Martin Horbanski et al.', Anonymous Referee #2, 18 Mar 2019
- AC1: 'Answers to all three reviews', Martin Horbanski, 21 May 2019
RC3: 'Referee Comment Horbanski et al', Anonymous Referee #3, 27 Mar 2019
- AC1: 'Answers to all three reviews', Martin Horbanski, 21 May 2019

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

AR by Martin Horbanski on behalf of the Authors (29 May 2019) Manuscript

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.