EGU2020-5878, updated on 10 Jan 2024
https://doi.org/10.5194/egusphere-egu2020-5878
EGU General Assembly 2020
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Retrieving H2O/HDO above clouds using TROPOMI SWIR measurements

Andreas Schneider, Tobias Borsdorff, Joost aan de Brugh, Alba Lorente Delgado, and Jochen Landgraf
Andreas Schneider et al.
  • SRON Netherlands Institute for Space Research, Utrecht, Netherlands (a.schneider@sron.nl)

The current scientific H2O/HDO data product from short-wave infrared reflectance measurements by the Tropospheric Monitoring Instrument (TROPOMI) is retrieved using a profile-scaling approach with a forward model which ignores scattering. Since water is too dark in the short-wave infrared, the coverage is limited to clear-sky scenes over land. Clouds are relatively bright in this spectral region, thus retrievals over low clouds will greatly enlarge the coverage. To do so, retrievals using a forward model which accounts for scattering and fitting effective cloud parameters additionally to the trace gases are examined. Inferred effective cloud parameters are compared with measurements by the Visible Infrared Imaging Radiometer Suite (VIIRS) to optimise the cloud model. Furthermore, the impact on the validation of the retrieved H2O/HDO columns with collocated measurements by the Total Carbon Column Observing Network (TCCON) is discussed.

How to cite: Schneider, A., Borsdorff, T., aan de Brugh, J., Lorente Delgado, A., and Landgraf, J.: Retrieving H2O/HDO above clouds using TROPOMI SWIR measurements, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-5878, https://doi.org/10.5194/egusphere-egu2020-5878, 2020.