Articles | Volume 13, issue 7
Atmos. Meas. Tech., 13, 3993–4008, 2020
https://doi.org/10.5194/amt-13-3993-2020
Atmos. Meas. Tech., 13, 3993–4008, 2020
https://doi.org/10.5194/amt-13-3993-2020

Research article 23 Jul 2020

Research article | 23 Jul 2020

Recommendations for spectral fitting of SO2 from miniature multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements

Zoë Y. W. Davis and Robert McLaren

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Status: closed
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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 Robert McLaren on behalf of the Authors (18 May 2020)  Author's response
ED: Publish as is (22 Jun 2020) by Jochen Stutz
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Short summary
MAX-DOAS is a technique that can be used to measure pollutant concentrations and vertical profiles in the atmosphere via remote sensing of sky-scattered light with a telescope. Measuring SO2 is particularly challenging because of low light intensities in regions where SO2 absorbs solar radiation. Here, we performed experiments that document inaccuracies in these measurements as a function of spectral fitting windows. We provide recommendations for measuring SO2 with greater accuracy.