Algorithm theoretical baseline for formaldehyde retrievals from S5P TROPOMI and from the QA4ECV project
On board the Copernicus Sentinel-5 Precursor (S5P) platform, the TROPOspheric Monitoring Instrument (TROPOMI) is a double-channel, nadir-viewing grating spectrometer measuring solar back-scattered earthshine radiances in the ultraviolet, visible, near-infrared, and shortwave infrared with global daily coverage.In the ultraviolet range, its spectral