Slayt 1 - RTC, Regional Training Centre - Turkey

Highlights1991 (August) – Regional Analysis and Forecast System (RAFS) updated for last time, NGM run withonly two grids with inner grid doubled in size Implemented Regional Data Assimilation System (RDAS) – included 3-hourly updates from an improved OIanalysis using all off-time data including profiler and Evaluation of Aircraft (ACARS) wind reports & complexquality control procedures1993 (June) – Early NCEP Eta (Mesinger, Janjic, Black) – Replaced the Lyon–Fedder–Mobarry (LFM)as the early run model (for 00 and 12 UTC) 80 km grid with 38 vertical levels1994 (September) – Rapid Update Cycle (RUC) (Forecasts System Lab (FSL), Benjamin) 60 km grid, 25 vertical levels, forecasts out to 12 hours 8 times a day CONUS domain with 3-hourly OI updates at 60 km resolution on 25 hybrid (sigma-theta) vertical levels.1994 (September) – Early Eta analysis upgrades1995 (August ) – Mesoscale version of the Eta model implemented at 03 and 15 UTC for an extendedCONUS (military) domain with 29 km and 50-layer resolution run out to 30 hours Included NMC’s first predictive cloud scheme and new coupled land-surface atm. Package1995 (October) – Major upgrade of Early Eta model 48 km grid with 38 vertical levels (replaced 80 km Eta as the early run)1996 (January) – New coupled land-surface-atmosphere scheme put into early Eta