Characterization of a chemical modulation reactor (CMR) for the measurement of atmospheric concentrations of hydroxyl radicals with a laser-induced fluorescence instrument

Cho, Changmin; Hofzumahaus, Andreas; Fuchs, Hendrik; Dorn, Hans-Peter; Glowania, Marvin; Holland, Frank; Rohrer, Franz; Vardhan, Vaishali; Kiendler-Scharr, Astrid; Wahner, Andreas; Novelli, Anna

doi:https://doi.org/10.5194/amt-14-1851-2021

Articles | Volume 14, issue 3

https://doi.org/10.5194/amt-14-1851-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-14-1851-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 3

Research article

|

05 Mar 2021

Research article |

| 05 Mar 2021

Characterization of a chemical modulation reactor (CMR) for the measurement of atmospheric concentrations of hydroxyl radicals with a laser-induced fluorescence instrument

Changmin Cho, Andreas Hofzumahaus, Hendrik Fuchs, Hans-Peter Dorn, Marvin Glowania, Frank Holland, Franz Rohrer, Vaishali Vardhan, Astrid Kiendler-Scharr, Andreas Wahner, and Anna Novelli

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Final revised paper (published on 05 Mar 2021)
Supplement to the final revised paper
Preprint (discussion started on 14 Sep 2020)
Supplement to the preprint

Interactive discussion

Status: closed

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

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RC1: 'Characterization of a chemical modulation reactor - Review', Anonymous Referee #1, 07 Oct 2020
- AC1: 'Reply on RC1', Changmin Cho, 01 Jan 2021
RC2: 'Review of “Characterization of a chemical modulation reactor (CMR) for the measurement of atmospheric concentrations of hydroxyl radicals with a laserinduced fluorescence instrument” by Cho et al.', Anonymous Referee #2, 13 Nov 2020
- AC1: 'Reply on RC1', Changmin Cho, 01 Jan 2021

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Changmin Cho on behalf of the Authors (04 Jan 2021) Author's response Manuscript

ED: Publish as is (06 Jan 2021) by Glenn Wolfe

AR by Changmin Cho on behalf of the Authors (11 Jan 2021)

Short summary

This study describes the implementation and characterization of the chemical modulation reactor (CMR) used in the laser-induced fluorescence instrument of the Forschungszentrum Jülich. The CMR allows for interference-free OH radical measurement in ambient air. During a field campaign in a rural environment, the observed interference was mostly below the detection limit of the instrument and fully explained by the known ozone interference.