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Update on model developments: Meteo-France NWP model / clouds and turbulence

Jean-Marcel Piriou Centre National de Recherches Météorologiques Groupe de Modélisation pour l’Assimilation et la Prévision. Update on model developments: Meteo-France NWP model / clouds and turbulence. CLOUDNET Workshop / Utrecht 21-22/10/2002. Global ARPEGE Aquaplanet mode.

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Update on model developments: Meteo-France NWP model / clouds and turbulence

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  1. Jean-Marcel Piriou Centre National de Recherches Météorologiques Groupe de Modélisation pour l’Assimilation et la Prévision Update on model developments: Meteo-France NWP model / clouds and turbulence CLOUDNET Workshop / Utrecht 21-22/10/2002

  2. Global ARPEGE Aquaplanet mode SCM ARPEGE (EUROCS, GATE, TOGA,BOMEX, ARM, …) Global regular ARPEGE / 4DVAR-ass./ 66 km PHYSICS LAM ALADIN / coupled/ 10 km Global stretched ARPEGE / 4DVAR-ass./ 20 to 200 km

  3. Perspectives operational model (GCM 20-200km ARPEGE + LAM10km ALADIN) • March towards new prognostic cloud and turbulence variables: ql/i, qr/s, TKE, w_ud, w_dd • EUROCS: 3 transition cases (well posed lateral conditions to compare CRMs to GCMs or LAMs) • Model to satellite, data assimilation cycle • CLOUDNET: (long time series, detailed profiles) colocated ql/i, qr/s, PBL depth, cloudiness, close TEMP data to provide in-situ validation of new microphysics / turbulence • Perspectives 2: a CRM in operations around 2008!... • 2003: first tests of the existing CRM méso-NHphysics in the ALADIN-NH 2.5km dynamical core  need for validations within CLOUDNET?

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