Leipziger Meteorologisches Kolloquium
Dr. Franz Kanngießer: What's beneath the clouds?
With this presentation we would like to offer you the opportunity to present latest results about machine-learning-based reconstructions of dust plume satellite images. Our invited speaker will present his latest findings and projects, followed by stimulating discussions.
What's beneath the clouds? - Machine-learning-based reconstructions of dust plume satellite images
Lecturer: Dr. Franz Kanngießer
GEOMAR, Helmholtz-Zentrum für Ozeanforschung Kiel
Mineral dust is by mass one of the most abundant atmospheric aerosol species on Earth. Its most important source region is North Africa, which lacks dense ground-based observational networks. To study dust plumes across North Africa, we therefore have to rely on satellite observations. Passive sensors like SEVIRI onboard the geostationary Meteosat Second Generation satellite provide large spatial coverage with high temporal resolution.
Since dust plumes frequently co-occur with clouds, which then obscure the full spatial extent of these dust plumes. I will present a machine-learning-based approach, which combines an off-the-shelf reconstruction algorithm, originally developed to restore gaps in climate datasets, with publicly available reanalysis and satellite observations. This approach performs as well as the current operational dust forecast ensemble provided by the WMO Dust Regional Center Barcelona. In addition, I will demonstrate short-comings of this approach, when applying it to dust plumes transported to Europe. Specifically, I will focus on the record-breaking dust plume of 15th of March 2022. Unlike North Africa, Europe possesses dense observational networks, which provide another pathway of restoring below-cloud dust plume extent.
zum Vortrag (Meeting-ID: 691 6879 4991, Kenncode: 486743)
Leipziger Meterologisches Kolloquium
Das Leipziger Meteorologische Kolloquium ist eine Veranstaltungsreihe des Instituts für Meteorologie in Kooperation mit dem Institut für Troposphärenforschung e.V. und der Deutschen Meteorologischen Gesellschaft e.V.