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

1 Data Assimilation aspects and the HyMeX * campaign DAOS 5th Meeting, Madison, Wisconsin, USA Y. Michel and N. Fourrié (Météo-France, CNRM-GAME) and coauthors http://www.hymex.org/ Email: hymex@cnrm.meteo.frhymex@cnrm.meteo.fr *Hydrological cycle in the Mediterranean eXperiment

2 HyMeX objectives Scientific topics

3 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

4 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

5 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)

6 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

7 Daily update on web site http://sop.hymex.org Predicted rain 24HRain Rates obs. rain 24H Treatment of spanish, catalan and italian SYNOPS

8 Facility Status

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

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