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Forecasting the weather
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| FORECASTING THE WEATHER
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| a) Weather prediction model “SKIRON”
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| 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.
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| b) ‘COSMO’ (LM) model
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| 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 ).
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| 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.
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| This model has already been installed in the computing system
of HNMS and run everyday operationally.
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| The data and initial conditions are sending in HNMS by DWD
through the network.
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| c) ‘NHREAS’ system
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| 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.
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The HNMS uses three parallel computational systems for the
needs of forecasting:
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CONVEX SPP-1600 with 16 processors
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HP-V2200 with 16 processorsHP-V2200
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3 HP-J and 1 HP-C 9000 workstations
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| These systems are inefficient and outdated for the current
and future needs of Hellenic Meteorological Service.
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