Articles | Volume 18, issue 22
https://doi.org/10.5194/amt-18-6893-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-18-6893-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
21 Nov 2025
Research article |
| 21 Nov 2025
| 21 Nov 2025
Harmonisation of sixteen tropospheric ozone satellite data records
Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Uccle, Belgium
Daan Hubert
Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Uccle, Belgium
José Granville
Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Uccle, Belgium
Oindrila Nath
Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Uccle, Belgium
Jean-Christopher Lambert
Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Uccle, Belgium
Catherine Wespes
Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Uccle, Belgium
Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES), Université Libre de Bruxelles (ULB), Brussels, Belgium
Pierre-François Coheur
Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES), Université Libre de Bruxelles (ULB), Brussels, Belgium
Cathy Clerbaux
Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES), Université Libre de Bruxelles (ULB), Brussels, Belgium
LATMOS/IPSL, Sorbonne Université, UVSQ, CNRS, Paris, France
Anne Boynard
LATMOS/IPSL, Sorbonne Université, UVSQ, CNRS, Paris, France
SPASCIA, Ramonville-Saint-Agne, France
Richard Siddans
Rutherford Appleton Laboratory, Chilton, UK
Barry Latter
Rutherford Appleton Laboratory, Chilton, UK
Brian Kerridge
Rutherford Appleton Laboratory, Chilton, UK
Serena Di Pede
Koninklijk Nederlands Meteorologisch Instituut (KNMI), De Bilt, the Netherlands
Pepijn Veefkind
Koninklijk Nederlands Meteorologisch Instituut (KNMI), De Bilt, the Netherlands
Juan Cuesta
Univ Paris Est Créteil and Université de Paris Cité, CNRS, LISA, Créteil, France
Gaelle Dufour
Université de Paris Cité and Univ Paris Est Créteil, CNRS, LISA, Paris, France
Klaus-Peter Heue
Deutsches Zentrum für Luft- und Raumfahrt (DLR), Oberpfaffenhofen, Germany
Melanie Coldewey-Egbers
Deutsches Zentrum für Luft- und Raumfahrt (DLR), Oberpfaffenhofen, Germany
Diego Loyola
Deutsches Zentrum für Luft- und Raumfahrt (DLR), Oberpfaffenhofen, Germany
Andrea Orfanoz-Cheuquelaf
Institute of Environmental Physics (IUP), Bremen, Germany
Swathi Maratt Satheesan
Institute of Environmental Physics (IUP), Bremen, Germany
Kai-Uwe Eichmann
Institute of Environmental Physics (IUP), Bremen, Germany
Alexei Rozanov
Institute of Environmental Physics (IUP), Bremen, Germany
Viktoria F. Sofieva
Finish Meteorological Institute (FMI), Helsinki, Finland
Jerald R. Ziemke
NASA Goddard Space Flight Center (GSFC), Greenbelt, Maryland, USA
Antje Inness
European Centre for Medium-Range Weather Forecasts (ECMWF), Shinfield Park, Reading, UK
Roeland Van Malderen
Royal Meteorological Institute of Belgium (RMIB), Uccle, Belgium
Lars Hoffmann
Jülich Supercomputing Centre, Forschungszentrum Jülich, Jülich, Germany
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Latest update: 06 Dec 2025
Short summary
The first Tropospheric Ozone Assessment Report (TOAR) encountered discrepancies between several satellite sensors’ estimates of the distribution and change of ozone in the free troposphere. Therefore, contributing to the second TOAR, we harmonise as much as possible the observational perspective of sixteen tropospheric ozone products from satellites. This only partially accounts for the observed discrepancies, with a reduction of 10–40 % of the inter-product dispersion upon harmonisation.
The first Tropospheric Ozone Assessment Report (TOAR) encountered discrepancies between several...
