Combined UV and IR ozone profile retrieval from TROPOMI and CrIS measurements

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dc.contributor.authorMettig, Nora
dc.contributor.authorWeber, Mark
dc.contributor.authorRozanov, Alexei
dc.contributor.authorBurrows, John P.
dc.contributor.authorVeefkind, Pepijn
dc.contributor.authorThompson, Anne M.
dc.contributor.authorStauffer, Ryan M.
dc.contributor.authorLeblanc, Thierry
dc.contributor.authorAncellet, Gerard
dc.contributor.authorNewchurch, Michael J.
dc.contributor.authorKuang, Shi
dc.contributor.authorKivi, Rigel
dc.contributor.authorTully, Matthew B.
dc.contributor.authorMalderen, Roeland Van
dc.contributor.authorPiters, Ankie
dc.contributor.authorKois, Bogumil
dc.contributor.authorStübi, René
dc.contributor.authorSkrivankova, Pavla
dc.date.accessioned2023-01-12T19:50:39Z
dc.date.available2023-01-12T19:50:39Z
dc.date.issued2022-05-12
dc.description.abstractVertical ozone profiles from combined spectral measurements in the ultraviolet and infrared spectral range were retrieved by using data from the TROPOspheric Monitoring Instrument on the Sentinel-5 Precursor (TROPOMI/S5P) and the Cross-track Infrared Sounder on the Suomi National Polar-orbiting Partnership (CrIS/SuomiNPP), which are flying in loose formation 3 min apart in the same orbit. A previous study of ozone profiles retrieved exclusively from TROPOMI UV spectra showed that the vertical resolution in the troposphere is clearly limited (Mettig et al., 2021). The vertical resolution and the vertical extent of the ozone profiles is improved by combining both wavelength ranges compared to retrievals limited to UV or IR spectral data only. The combined retrieval particularly improves the accuracy of the retrieved tropospheric ozone and to a lesser degree stratospheric ozone up to 30 km. An increase in the degrees of freedom (DOF) by 1 DOF was found in the UV + IR retrieval compared to the UV-only retrieval. Compared to previous publications, which investigated combinations of UV and IR observations from the Ozone Monitoring Instrument and Tropospheric Emission Spectrometer (OMI and TES) and Global Ozone Monitoring Experiment version 2 and Infrared Atmospheric Sounding Interferometer (GOME-2 and IASI) pairs, the degree of freedom is lower, which is attributed to the reduced spectral resolution of CrIS compared to TES or IASI. Tropospheric lidar and ozonesondes were used to validate the ozone profiles and tropospheric ozone content (TOC). In their comparison with tropospheric lidars, both ozone profiles and TOCs show smaller biases for the retrieved data from the combined UV + IR observation than from the UV observations alone. For the ozone profiles below 10 km, the mean differences are around ±10 % and the mean TOC varies around ±3 DU. We show that TOCs from the combined retrieval agree better with ozonesonde results at northern latitudes than the UV-only and IR-only retrievals and also have lower scatter. In the tropics, the IRonly retrieval shows the best agrement with TOCs derived from ozonesondes. While in general the TOCs show good agreement with ozonesonde data, the profiles have a positive bias of around 30 % between 10 and 15 km. The reason is probably a positive stratospheric bias from the IR retrieval. The comparison of the UV + IR and UV ozone profiles up to 30 km with the Microwave Limb Sounder (MLS) demonstrates the improvement of the UV + IR profile in the stratosphere above 18 km. In comparison to the UV-only approach the retrieval shows improvements of up to 10 % depending on latitude but can also show worse results in some regions and latitudes.en_US
dc.description.sponsorshipThis research has been supported by the Deutsches Zentrum für Luft- und Raumfahrt (grant no. 50EE1811A), the Universität Bremen (grant nos. INST 144/379-1 and INST 144/493-1), and the Freie Hansestadt Bremen.en_US
dc.description.urihttps://amt.copernicus.org/articles/15/2955/2022/en_US
dc.format.extent24 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2bno6-dgeh
dc.identifier.citationMettig, N., Weber, M., Rozanov, A., Burrows, J. P., Veefkind, P., Thompson, A. M., Stauffer, R. M., Leblanc, T., Ancellet, G., Newchurch, M. J., Kuang, S., Kivi, R., Tully, M. B., Van Malderen, R., Piters, A., Kois, B., Stübi, R., and Skrivankova, P.: Combined UV and IR ozone profile retrieval from TROPOMI and CrIS measurements, Atmos. Meas. Tech., 15, 2955–2978, https://doi.org/10.5194/amt-15-2955-2022, 2022.en_US
dc.identifier.urihttps://doi.org/10.5194/amt-15-2955-2022
dc.identifier.urihttp://hdl.handle.net/11603/26661
dc.language.isoen_USen_US
dc.publisherEGUen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Joint Center for Earth Systems Technology
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.en_US
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleCombined UV and IR ozone profile retrieval from TROPOMI and CrIS measurementsen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0002-7829-0920en_US

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