COPS FRANCE

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COPS - FRANCE

• Proposal submitted to ANR
• White call March 2006

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PARTICIPANTS

• CNRM (Météo-France, Toulouse)
• LMD and SA (CNRS/IPSL, Paris)
• LaMP (CNRS, Clermont-Ferrand)
• LA (CNRS, Toulouse)

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ACTIVITIES

• Instrumentation
• Modelling
• Data assimilation

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1 - Implementation of a supersite in the Vosges
area
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Required instrumentation for the supersite (C.
Flamant)

• RS station
• UHF wind profiler sodar
• Surface flux station (and possibly
  scintillometer)
• TReSS (Transportable Remote Sensing Station)
• Raman lidar
• X and K band radars (and possibly disdrometers
  and rain gauges)

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Open questions

• Supersite location ?
• Optimum distribution of the instruments between
  the different sites

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2- Deployment of a GPS network(J. Van Baelen)

• 2 existing stations in Alsace region and
  potentially 2 to 5 more in the Vosges region by
  2007
• 16 or more GPS temporary stations from INSU pool
  of instrumentation
• To be installed in northeastern France

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Open questions

• Homogeneous distribution over the COPS area
• Denser network around the supersite
• Need for specific GPS coordination
• Real time transmission ?

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3 Operations upstream at the SIRTA (M.
Haeffelin)

• Located 20 km south of Paris
• Radars, lidars, and radiometers
• Radar data from Montancy sent in real time

4 Routine observations from Météo-France
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Modelling

• Clarks model DESCAM
• (very detailed microphysics bin type model
• from CCN/ICN to liquid/solid precipitation)
• Méso-NH model
• (two-moment microphysics)
• AROME
• (systematic forecasts within MAP-D-PHASE)

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Data assimilation

• 3D-Var AROME data assimilation system
• In real time, all conventional available
  meso-scale observations
• After the experiment, GPS zenith delays and radar
  data

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Future plans ...

• Airborne operation (Falcon LEANDRE II dial
  water vapor lidar dropsondes)
• 30 hours 1 month - 100 DS
• Proposal(s) to be submitted to LEFE/IDAO and/or
  CNES)

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French Operational Radars
Nancy Doppler, Single polar. 3 rotations /
5 Montancy Doppler / Double plolar. 6/8
rotations / 5 12 elevations / 15