Articles | Volume 11, issue 4
Atmos. Meas. Tech., 11, 2395–2426, 2018
https://doi.org/10.5194/amt-11-2395-2018

Special issue: TROPOMI on Sentinel-5 Precursor: data products and...

Atmos. Meas. Tech., 11, 2395–2426, 2018
https://doi.org/10.5194/amt-11-2395-2018

Research article 26 Apr 2018

Research article | 26 Apr 2018

Algorithm theoretical baseline for formaldehyde retrievals from S5P TROPOMI and from the QA4ECV project

Isabelle De Smedt et al.

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Short summary
This paper introduces the formaldehyde (HCHO) tropospheric vertical column retrieval algorithm implemented in the TROPOMI/Sentinel-5 Precursor operational processor, and comprehensively describes its various retrieval steps. Furthermore, algorithmic improvements developed in the framework of the EU FP7-project QA4ECV are described for future updates of the processor. Detailed error estimates are discussed in the light of Copernicus user requirements and needs for validation are highlighted.