EGU23-4216
https://doi.org/10.5194/egusphere-egu23-4216
EGU General Assembly 2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Large-scale perspective on the extreme near-surface winds in the central North Atlantic

Aleksa Stanković1, Rodrigo Caballero1, and Gabriele Messori2,1
Aleksa Stanković et al.
  • 1Department of Meteorology and Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
  • 2Department of Earth Sciences and Centre of Natural Hazards and Disaster Science (CNDS), Uppsala University, Uppsala, Sweden

This study investigates winter cyclones that cause extreme 10 m winds in the central North Atlantic region (30o to 60o latitude, -50o to -10o longitude) in the ERA5 dataset. We employ a bottom-up approach consisting of selection of the extreme 10 m wind events and analysis of the cyclones that caused the extremes.

The 10 m wind extremes were ranked using the Klawa and Ulbrich (2003) destructiveness index, which takes into account wind exceedances over the local 98th percentiles. The top 1% of destructive events were chosen for further analysis. Cyclones were associated with the extreme winds by finding the closest sea-level pressure lows at the times of maximum wind speeds.

By analyzing various meteorological fields associated with the temporal evolution of the selected cyclones, we find an important role of interactions with other pre-existing cyclones that create suitable conditions for the development of the subsequent extreme windstorms.  

How to cite: Stanković, A., Caballero, R., and Messori, G.: Large-scale perspective on the extreme near-surface winds in the central North Atlantic, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-4216, https://doi.org/10.5194/egusphere-egu23-4216, 2023.