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

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    Authors
    De Smedt, I.
    Theys, N.
    Yu, H.
    Danckaert, T.
    Lerot, C.
    Compernolle, S.
    Van Roozendael, M.
    Richter, A.
    Hilboll, A.
    Peters, E.
    Pedergnana, M.
    Loyola, D.
    Beirle, S.
    Wagner, T.
    Eskes, H.
    Van Geffen, J.
    Boersma, K.F.
    Veefkind, P.
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    Discipline
    Earth and related Environmental sciences
    Audience
    Scientific
    Date
    2018
    Metadata
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    Description
    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 resolution and radiometric performance are equivalent to those of its predecessor OMI, but its horizontal resolution at true nadir is improved by an order of magnitude. This paper introduces the formaldehyde (HCHO) tropospheric vertical column retrieval algorithm implemented in the S5P 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. Finally, verification results based on the application of the algorithm to OMI measurements are presented, demonstrating the performances expected for TROPOMI.
    Citation
    De Smedt, I.; Theys, N.; Yu, H.; Danckaert, T.; Lerot, C.; Compernolle, S.; Van Roozendael, M.; Richter, A.; Hilboll, A.; Peters, E.; Pedergnana, M.; Loyola, D.; Beirle, S.; Wagner, T.; Eskes, H.; Van Geffen, J.; Boersma, K.F.; Veefkind, P. (2018). Algorithm theoretical baseline for formaldehyde retrievals from S5P TROPOMI and from the QA4ECV project. , Atmospheric Measurement Techniques, Vol. 11, Issue 4, 2395-2426, DOI: 10.5194/amt-11-2395-2018.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/6933
    doi: http://dx.doi.org/10.5194/amt-11-2395-2018
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
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