Articles | Volume 13, issue 7
Atmos. Meas. Tech., 13, 3751–3767, 2020
https://doi.org/10.5194/amt-13-3751-2020

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

Atmos. Meas. Tech., 13, 3751–3767, 2020
https://doi.org/10.5194/amt-13-3751-2020

Research article 10 Jul 2020

Research article | 10 Jul 2020

TROPOMI–Sentinel-5 Precursor formaldehyde validation using an extensive network of ground-based Fourier-transform infrared stations

Corinne Vigouroux 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 Lorena Grabowski on behalf of the Authors (25 May 2020)  Author's response
ED: Publish subject to technical corrections (12 Jun 2020) by Hartmut Boesch
AR by Corinne Vigouroux on behalf of the Authors (15 Jun 2020)  Author's response    Manuscript
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Short summary
We validate the TROPOMI HCHO product with ground-based FTIR (Fourier-transform infrared) measurements from 25 stations. We find that TROPOMI overestimates HCHO under clean conditions, while it underestimates it at high HCHO levels. Both TROPOMI precision and accuracy reach the pre-launch requirements, and its precision can even be 2 times better. The observed TROPOMI seasonal variability is in agreement with the FTIR data. The TROPOMI random uncertainty and data filtering should be refined.