EGU21-9383
https://doi.org/10.5194/egusphere-egu21-9383
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

A satellite perspective on fog and low stratus dissipation over Europe

Eva Pauli1,3, Jan Cermak3,2, and Hendrik Andersen3,2
Eva Pauli et al.
  • 1Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany (eva.pauli@kit.edu)
  • 2Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
  • 3Institute of Photogrammetry and Remote Sensing, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany

In this study, the dissipation of fog and low stratus (FLS) over Europe is analyzed based on geostationary satellite data using logistic regression. 
The dissipation of FLS is a result of the interaction of complex physical processes and its timing has implications for environmental systems, traffic at land, sea and in the air, as well as for the production of solar energy. However, the timing of FLS dissipation, as well as its relationship to meteorological and land surface conditions has not been investigated quantitatively over a large spatial and temporal scale yet. 
In this study a 10-year FLS dissipation climatology is created using logistic regression. For this, a binary satellite-based FLS mask for each 15-minute interval from 2006-2015 over Europe, by Egli et al. 2017, is used. A logistic regression is applied to identify the dissipation time of each individual fog event from the binary FLS time series. Marked geographic FLS dissipation patterns are apparent, where FLS is found to dissipate earlier in elevated terrains and persist longer in valleys. Furthermore, the influence of different meteorological and land surface conditions on FLS dissipation are investigated.
In the future, the presented approach will be extended to analyze FLS formation and its dependency on meteorological and land surface conditions.

How to cite: Pauli, E., Cermak, J., and Andersen, H.: A satellite perspective on fog and low stratus dissipation over Europe, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-9383, https://doi.org/10.5194/egusphere-egu21-9383, 2021.

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