Articles | Volume 13, issue 10
Atmos. Meas. Tech., 13, 5165–5191, 2020
https://doi.org/10.5194/amt-13-5165-2020

Special issue: TROPOMI on Sentinel-5 Precursor: first year in operation (AMT/ACP...

Atmos. Meas. Tech., 13, 5165–5191, 2020
https://doi.org/10.5194/amt-13-5165-2020

Research article 02 Oct 2020

Research article | 02 Oct 2020

Validation of TROPOMI tropospheric NO2 columns using dual-scan multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements in Uccle, Brussels

Ermioni Dimitropoulou et al.

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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 Ermioni Dimitropoulou on behalf of the Authors (26 Jun 2020)  Author's response    Manuscript
ED: Publish subject to minor revisions (review by editor) (17 Jul 2020) by Lok Lamsal
AR by Anna Wenzel on behalf of the Authors (20 Aug 2020)  Author's response    Manuscript
ED: Publish as is (23 Aug 2020) by Lok Lamsal
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Short summary
We present 1 year of dual-scan ground-based multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements of aerosol and tropospheric NO2 in Uccle (Belgium). Measuring tropospheric NO2 vertical column densities (VCDs) in different azimuthal directions has a positive effect on comparison with measurements from TROPOMI. We prove that the use of inadequate a priori NO2 profile shape data in the TROPOMI retrieval is responsible for the systematic underestimation of S5P NO2 data.