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

Supplement

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

Data sets

Characterization and application of a chemical modulation reactor during the JULIAC campaign, V1 C. Cho, A. Hofzumahaus, H. Fuchs, H.-P. Dorn, M. Glowania, F. Holland, F. Rohrer, V. Vardhan, A. Kiendler-Scharr, A. Wahner, and A. Novelli https://doi.org/10.26165/JUELICHDATA/GK7PJQ

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.