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Weather orecast Current Weather Climatology Meteorology HNMS 23/04/2014
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FORECASTING THE WEATHER
a) Weather prediction model “SKIRON”
The limited area model “SKIRON” is based on ETA model. Due to the restricted computing power of HNMS`s systems, SKIRON model is excecuted in the limited area of the SE Mediterranean, with a resolution of almost 10km. SKIRON is a hydrostatic model, which means that it accepts the validity of hydrostatic equilibrium.
b) ‘COSMO’ (LM) model
The HNMS participates with the Meteorological Services of Germany, Switzerland Italy and Poland to the consortium C.O.S.M.O. (CONSORTIUM FOR SMALL-SCALE MODELLING ).
The aim of this consortium is the common attempt for the development of a non-hydrostatic model which will be able to simulate well small scale processes. The initial system was based on to the local non-hydrostatic model LM of German Meteorological Service.
This model has already been installed in the computing system of HNMS and run everyday operationally.
The data and initial conditions are sending in HNMS by DWD through the network.
c) ‘NHREAS’ system
The local forecasting system of Nhreas has developed from HNMS and University of Athens. It is based on RAMS (Regional Atmospheric Modeling System), LAPS and WAM models, it is a local, non hydrostatic weather model and covers a small area due to the limited possibility in computational power of HNMS.
The HNMS uses three parallel computational systems for the needs of forecasting:
  • CONVEX SPP-1600 with 16 processors
  • HP-V2200 with 16 processorsHP-V2200
  • 3 HP-J and 1 HP-C 9000 workstations
These systems are inefficient and outdated for the current and future needs of Hellenic Meteorological Service.
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