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Status report of ALADIN at CHMI. Martin Janoušek. Highlights. resolution upgrade of ALADIN/CE ALADIN/MFSTEP operational verification scores available from July 2002 products for RODOS SLHD / drag & lift / no envelope combination testing low-level cloudiness improvement

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Status report of ALADIN at CHMI


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    1. Status report of ALADIN at CHMI Martin Janoušek

    2. Highlights • resolution upgrade of ALADIN/CE • ALADIN/MFSTEP operational • verification scores available from July 2002 • products for RODOS • SLHD / drag & lift / no envelope combination testing • low-level cloudiness improvement • PBL height diagnostics

    3. Computing environment HPCF NEC SX6/4B-32 data handling system Sun Fire 4810 Sun StorEdge 9910 archive server Sun E250 Qualstar TLS 46120 SAN 1 Gb Ethernet 100 Mb Ethernet Internet 2 Mbps RMDCN WAN MSS Sun cluster Linux cluster

    4. Operational suite • ALADIN/LACE domain • 309x277 grid points, 159x143 truncation (linear) • 9 km resolution, 43 vertical levels • time step 360 s • CY25T1_op4 • COCONUT tuning + modified Xu-Randal scheme • DF blending cycle • DF blending + incremental DFI on short cut-off • hourly DIAGPACK

    5. MFSTEPMediterranean Forecasting System Toward Environmental Predictions • 589x309 grid points • 299x159 truncation (linear) • 9.5 km resolution • 37 levels • coupled to ARPEGE, 3h coupling period • continuous long cut-off blending cycle • retuned on case studies over sea (Black Sea case) • modified thermal roughness length over sea • moist gustiness parameterization • cloud parameterization scheme tuning • production forecast 1x week to +120h • OpenMP version in the preparation