EGU2020-22412
https://doi.org/10.5194/egusphere-egu2020-22412
EGU General Assembly 2020
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Effect of the Ushant SST front on regional weather forecasting in the event of anticyclonic events

Francoise Orain, Marie-Noelle Bouin2, Jean-Luc Redelsperger3, and Valérie Garnier3
Francoise Orain et al.
  • 2Météo-France, CNRM/GMME Brest
  • 3LOPS/SIAM Brest

The representation of the Ushant front in Meteo-France numerical models is not accurate. The aim of this study is to evaluate the impact of a better representation of this front derived from SST satellite observation data on the weather forecast in Brittany.

 

The study consisted in finding and selecting cases from 2016 to 2018 where the Ushant front was present in satellite SST analysis (high spatial and temporal resolution ) with differences in weather pattern between North and South Brittany. Then compare this to the operational Arome model (Meteo France non hydrostatic model).

Situations of disagreement between the model and the observations were selected. Some weather forecast simulations with Mesonh model (very close to Arome) were performed on these cases with a better definition of the Ushant front. We present some results.

 

 

How to cite: Orain, F., Bouin, M.-N., Redelsperger, J.-L., and Garnier, V.: Effect of the Ushant SST front on regional weather forecasting in the event of anticyclonic events, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-22412, https://doi.org/10.5194/egusphere-egu2020-22412, 2020.