Dr Georgios Efstathiou
Senior Research Fellow/Proleptic Lecturer
I hold a NERC Independent Research Fellowship aiming to provide a step-change in our ability to predict high-impact weather events by developing a novel turbulence parametrization for the next generation, sub-kilometric atmospheric models. More specifically, I am working on pusing the spatial resolution of Numerical Weather Prediction (NWP) models to finer grid spacings in order to significantly improve the forecast of deep convection which is associated with the most violent meteorological phenomena on earth. My research focuses on understanding the dynamics of convection accross the scales and the coupling of the atmospheric boundary layer with shallow and deep moist convection. To achieve this, I am using numerical modelling to simulate the turbulent motions in the boundary layer and convective clouds, aiming to develop appropriate parametrizations for the unresolved scales in high-resolution NWP models.
I joined the University of Exeter as a post-doctoral researcher in November 2013. I was part of the GREYBLS (Modelling GREY - zone Boundary LayerS) project with Prof Bob Beare, in collaboration with the Department of Meteorology, University of Reading and the UK Met Office. The goal of the project was to study the behaivour of boundary-layer convection at grey-zone resolutions and the interaction between the partially-resolved and sub-grid turbulence structures.
Then I moved on working as a Research Fellow on the Met Office/NERC funded ParaCon/CoDyPhy project (https://www.metoffice.gov.uk/research/collaboration/paracon) led by Prof Thuburn, which aims at a unified representation of convection across the scales, based on a novel multi-fluid framework.
I am a Fellow of the Royal Meteorological Society and a member of the scientific committee that is launching the second phase of the Grey Zone Project (more information here).
I hold a Ph.D in Atmospheric Sciences/Meteorology from University of Ioannina, Greece and a M.Sc. in Atmospheric Physics from the Aristotle University of Thessaloniki, Greece.
Current research interests:
- Ultra-fine-resolution Numerical Weather Prediction
- Large-Eddy Simulation (LES) of atmospheric flows
- Turbulence modelling
- Boundary layer and mesoscale meteorology
- Deep convection
- Synoptic meteorology
- Dynamics of heavy rainfall events and high-impact weather
- Interaction of turbulent transport with the synoptic environment
NERC Independent Research Fellowship (P.I.): “Adaptive turbulence modelling to improve high-impact weather forecasts in next generation atmospheric models”