Update of lake cover for NWP modelling
- 1ECMWF, Research, Reading, United Kingdom of Great Britain and Northern Ireland (margarita.choulga@ecmwf.int)
- 2Finnish Meteorological institute, Helsinki, Finland
Lakes modify the structure of the atmospheric boundary layer. They can intensify winter snowstorms, increase/decrease surface temperature and amount of precipitation. At European Centre for Medium-Range Weather Forecasts (ECMWF) lake parametrization was introduced in 2015. Inland water bodies (lakes, reservoirs, rivers and coastal waters) are simulated by the Fresh-water Lake model FLake, which was chosen to be included in the
Integrated Forecasting System (IFS) for its intermediate complexity, particularly adapted for numerical weather prediction and climate applications.
In order to eliminate outdated lake location error it was decided to upgrade lake cover field in the IFS model with Global Surface Water Explorer (GSWE) data. Techniques used to adapt GSWE for the use of global NWP modelling and first results that used upgraded lake field will be presented.
How to cite: Choulga, M., Boussetta, S., Kourzeneva, E., and Balsamo, G.: Update of lake cover for NWP modelling, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-10668, https://doi.org/10.5194/egusphere-egu2020-10668, 2020.
