EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Data quality of Aeolus wind measurements

Isabell Krisch1, Oliver Reitebuch1, Jonas von Bismarck2, Alain Dabas3, Peggy Fischer2, Dorit Huber4, Jos de Kloe5, Michael Rennie6, and the Aeolus DISC*
Isabell Krisch et al.
  • 1German Aerospace Center (DLR), Institute of Atmsopheric Physics, Germany (
  • 2European Space Agency (ESA/ESRIN), Frascati (Roma), Italy
  • 3Météo France, Toulouse, France
  • 4DoRIT, Fürstenfeldbruck, Germany
  • 5Royal Netherlands Meteorological Institute (KNMI), De Bilt, the Netherlands
  • 6European Centre for Medium-Range Weather Forecasts, Reading, UK
  • *A full list of authors appears at the end of the abstract

The European Space Agency (ESA)’s Earth Explorer Aeolus was launched in August 2018 carrying the world’s first spaceborne wind lidar, the Atmospheric Laser Doppler Instrument (ALADIN). ALADIN uses a high spectral resolution Doppler wind lidar operating at 355nm to determine profiles of line-of-sight wind components in near-real-time (NRT). ALADIN samples the atmosphere from 30km altitude down to the Earth’s surface or to the level where the lidar signal is attenuated by optically thick clouds.

The global wind profiles provided by ALADIN help to improve weather forecasting and the understanding of atmospheric dynamics as they fill observational gaps in vertically resolved wind profiles mainly in the tropics,  southern hemisphere, and over the northern hemisphere oceans. Since 2020, multiple national and international weather centres (e.g. ECMWF, DWD, Météo France, MetOffice) assimilate Aeolus observations in their operational forecasting. Additionally, the scientific exploitation of the Aeolus dataset has started.

A main prerequisite for beneficial impact and scientific exploitation is data of sufficient quality. Such high data quality has been achieved through close collaboration of all involved parties within the Aeolus Data Innovation and Science Cluster (DISC), which was established after launch to study and improve the data quality of Aeolus products. The tasks of the Aeolus DISC include the instrument and platform monitoring, calibration, characterization, retrieval algorithm refinement, processor evolution, quality monitoring, product validation, and impact assessment for NWP.

The achievements of the Aeolus DISC for the NRT data quality and the one currently available reprocessed dataset will be presented. The data quality of the Aeolus wind measurements will be described and an outlook on planned improvements of the dataset and processors will be provided.

Aeolus DISC:

Christian Lemmerz, Oliver Lux, Uwe Marksteiner, Nafiseh Masoumzadeh, Fabian Weiler, Benjamin Witschas, Fabio Bracci, Markus Meringer, Karsten Schmidt, Alexander Geiß, Ines Nikolaus, Michael Vaughan, Frederic Fabre, Thomas Flament, Dimitri Trapon, Adrien Lacour, Saleh Abdalla, Lars Isaksen, Dave Donovan, Jos de Kloe, Gert-Jan Marseille, Ad Stoffelen, Gerd-Jan van Zaddelhoff, Ping Wang, Gaetan Perron, Sebastian Jupin-Langlois, Marcella Veneziani, Bas Pijnacker-Hordijk, Simone Bucci, Giacomo Gostinicchi, Thomas Kanitz, Anne-Grete Straume, Frithjof Ehlers, Denny Wernham, Sebastian Bley, Stefano Aprile, Marta DeLaurentis, Tommaso Parrinello

How to cite: Krisch, I., Reitebuch, O., von Bismarck, J., Dabas, A., Fischer, P., Huber, D., de Kloe, J., and Rennie, M. and the Aeolus DISC: Data quality of Aeolus wind measurements, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-6169,, 2021.

Corresponding presentation materials formerly uploaded have been withdrawn.