Articles | Volume 13, issue 10
Research article
29 Oct 2020
Research article |  | 29 Oct 2020

Measurement of NOx and NOy with a thermal dissociation cavity ring-down spectrometer (TD-CRDS): instrument characterisation and first deployment

Nils Friedrich, Ivan Tadic, Jan Schuladen, James Brooks, Eoghan Darbyshire, Frank Drewnick, Horst Fischer, Jos Lelieveld, and John N. Crowley


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 Svenja Lange on behalf of the Authors (25 Aug 2020)  Author's response    Manuscript
ED: Publish as is (11 Sep 2020) by Dwayne Heard

Post-review adjustments

AA: Author's adjustment | EA: Editor approval
AA by Nils Friedrich on behalf of the Authors (28 Oct 2020)   Author's adjustment   Manuscript
EA: Adjustments approved (29 Oct 2020) by Dwayne Heard
Short summary
We present a new instrument for the measurement of NOx and NOy based on a combination of the thermal dissociation of NOy to NOx and cavity ring-down spectroscopic detection of NO2. It features a denuder to separate the contributions of gas-phase and particulate nitrates to NOy. We provide a detailed characterization of the instrument and briefly outline results from first deployments.