Meteorological Model (MEPS) — Forecast data real-time

DESCRIPTION: The data files contain analysis and forecast data from the MEPS forecast model. MEPs is an ensemble forecasting system with a total of 15 members over a three-hour period. This means that MEPS produces 15 different forecasts for each forecasting event where the different members have the same initial state based on edge values from selected ensemble perturbation from the European Weather Centre model. By using the information in all ensemble members, different probabilities can be calculated, e.g. how uncertain the forecast is. If you are only interested in a deterministic forecast, MEPS member 0 is used. Each model member runs every 3 hours with forecasts 66 hours ahead in the time of the member. All middle March data is generated in grib2 format, where only a limited number of parameters are retrieved from the members for each time they were generated. For Members 0 and 1, all parameters are retrieved in grib1 format for every six hours, 00, 06, 12 and 18 UTC. The forecast is made over an area covering Scandinavia, Finland, Denmark, the Baltic States, the North Sea and parts of north-eastern Europe. The area is divided into grid panes with 2.5 km resolution and 65 vertical levels. There are a large number of parameters that describe temperature, precipitation, wind, humidity, cloudiness, etc. USE: At SMHI, data from MEPS is used as a basis for weather forecasting and as input to other models such as hydrology and oceanography. FORMAT: Data is in GRIB format.