Data Assimilation aspects and the HyMeX * campaign DAOS 5th Meeting, Madison, Wisconsin, USA Y. Michel and N. Fourrié (Météo-France, CNRM-GAME) and coauthors.

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Presentation transcript:

Data Assimilation aspects and the HyMeX * campaign DAOS 5th Meeting, Madison, Wisconsin, USA Y. Michel and N. Fourrié (Météo-France, CNRM-GAME) and coauthors *Hydrological cycle in the Mediterranean eXperiment

HyMeX objectives Scientific topics

Better understanding of the intense events: processes and contribution to the trend Key questions: What are the ingredients and their interactions necessary to produce an extreme event ? What will be the evolution of intense events with the global climate change ? Mediterranean cyclogeneses Regional winds (Mistral, Bora, Tramontana) Mesoscale convective systems Slow-moving frontal systems Coastal orographic precipitation HyMeX objectives Scientific topics

Observation Strategy (Focus on NW Med TA) SOP1 in order to document: - Heavy precipitation and Flash-flooding - Ocean state prior the formation of dense water SOP2 in order to document: - Dense Water Formation and Ocean convection - Cyclogenesis and local winds ? NW Med TA --- Target Area of the first EOP/SOP series Hydrometeorological sites Atmospheric sites Key regions for dense water formation and ocean convection

AROME_FRANCE (2.5km) AROME_WMED (2.5km) BOLAM (15km) ALADIN-HR (8km) (BOLD, with assimilation cycle) WRF-MED1 (50km) WRF-MED2 (7km) BOLAM (11km) MOLOCH (2.7km) MESO-NH (2.5km) MM5-D1 (22.5km) MM5-D2 (7.5km) MM5-D3 (2.5km) TS7: Real-time modelling forecast during SOP/EOP Real-time atmospheric models to guide observation deployement (available at the HOC)

AROME-WMED: Data Assimilation Assimilation scheme: 3D-Var at 2.5km, assimilation window 3h, 48H forecast range Assimilated observations:  Conventional data : surface data, wind profilers, radiosondes  Ground-based GPS stations  Satellite radiances from geostationnary and polar-orbiting satellites  Radar doppler winds and reflectivities (1D+3D-Var of RH profiles)  Wind derived from satellite imagery Additional SYNOP provided by Spain AROME WMED 960x640 points

Daily update on web site Predicted rain 24HRain Rates obs. rain 24H Treatment of spanish, catalan and italian SYNOPS

Facility Status

The campaign has started! Already 4 IOPs for heavy precipitating events over Italy