Articles | Volume 13, issue 6
Atmos. Meas. Tech., 13, 3119–3146, 2020
https://doi.org/10.5194/amt-13-3119-2020
Atmos. Meas. Tech., 13, 3119–3146, 2020
https://doi.org/10.5194/amt-13-3119-2020

Research article 12 Jun 2020

Research article | 12 Jun 2020

Implementation of a chemical background method for atmospheric OH measurements by laser-induced fluorescence: characterisation and observations from the UK and China

Robert Woodward-Massey et al.

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AR by Dwayne Heard on behalf of the Authors (07 Apr 2020)  Author's response    Manuscript
ED: Publish subject to technical corrections (29 Apr 2020) by Anna Novelli
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Short summary
The OH radical is known as nature’s detergent, removing most trace gases from the atmosphere. Hence, an accurate measurement of its concentration is very important. We present measurements of OH in several field locations using a laser-based fluorescence method equipped with an OH scavenger. By determining the background signal in two different ways, we show that the instrument does not suffer any significant interferences that could result in an overestimation of OH concentrations.