Slayt 1 - RTC, Regional Training Centre - Turkey
Slayt 1 - RTC, Regional Training Centre - Turkey
Slayt 1 - RTC, Regional Training Centre - Turkey
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Highlights 1955 – First Operational Numerical Model – Barotropic Model (Charney) 1962 – First Operational Baroclinic Model (Cressman) 1966 – 6-layer Primitive Equation (PE) model (PEs by Shuman and Hovermale) –First Global PE Model.381 km gridFirst model to have QPF (Quantitave Precipitation Forecasts) 1971 – Limited Fine-Mesh Model (LFM) (Howcroft) –First operational regional model.190 km grid, 6 vertical layersImproved resolution had positive impact on QPF 1978 – 7-Layer PE mode: mesh size/time step halved from 6-layer model 1980 – Global Spectral Model (Sela) replaced 7-layer PE model 30 Spherical harmonic modes (resolves to 30 waves) and 12 levels 1985 – Nested Grid Model (NGM) (Phillips, Hoke) – Model part of <strong>Regional</strong> Analysis and Forecast System (RAFS) 3 grids: 381, 190, and 80 km and 16 levels Used optimum interpolation (OI) Later frozen for MOS (Model Output Statics) since 1990
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