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

Vigouroux, Corinne; Langerock, Bavo; Bauer Aquino, Carlos Augusto; Blumenstock, Thomas; Cheng, Zhibin; De Mazière, Martine; De Smedt, Isabelle; Grutter, Michel; Hannigan, James W.; Jones, Nicholas; Kivi, Rigel; Loyola, Diego; Lutsch, Erik; Mahieu, Emmanuel; Makarova, Maria; Metzger, Jean-Marc; Morino, Isamu; Murata, Isao; Nagahama, Tomoo; Notholt, Justus; Ortega, Ivan; Palm, Mathias; Pinardi, Gaia; Röhling, Amelie; Smale, Dan; Stremme, Wolfgang; Strong, Kim; Sussmann, Ralf; Té, Yao; van Roozendael, Michel; Wang, Pucai; Winkler, Holger

doi:https://doi.org/10.5194/amt-13-3751-2020

Articles | Volume 13, issue 7

Atmos. Meas. Tech., 13, 3751–3767, 2020

https://doi.org/10.5194/amt-13-3751-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

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

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 13, issue 7

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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Final revised paper (published on 10 Jul 2020)
Preprint (discussion started on 17 Feb 2020)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review', Anonymous Referee #1, 17 Mar 2020
- AC1: 'Reply to Anonymous Referee #1', Corinne Vigouroux, 04 May 2020
RC2: 'Review Vigouroux et al. 2020', Anonymous Referee #2, 30 Mar 2020
- AC2: 'Reply to Anonymous Referee #2', Corinne Vigouroux, 04 May 2020

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

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.