"Convergence" days, Toulouse, 24-25 September 2008

The ‘Convergence days’ (a workshop-type scientific exchange of views) took place in Toulouse on 24-25/9/08 and led to a set of proposed orientations, for the four ongoing ‘convergence actions’ as well as for the more general issues concerning physics- and physics-dynamics-interfacing work inside the Consortium.

Main presentations (and joined documents) of this workshop :

• Introduction talks
  • Aims of the «Convergence» days by JF Geleyn
  • What type of cooperation do ALADIN and HARMONIE need (or hope)? by JF Geleyn
  • CNRM strategy for the cooperation on atmospheric models for NWP, research and climate by E. Brun
  • CNRM modelling strategy for MF NWP models by F. Bouttier
  • Bio diversity and sustainable development in European NWP by R. Brozkova
  • Why these actions? What purpose for them? by P. Termonia
  • Interpreting the algorithmic of parameterisation via ‘dynamics’ and ‘observed physics’ : The ALARO-0 and 3MT examples by JF Geleyn
• 3MT
  • Possibility of testing «3MT» in AROME, ALADIN-MF, ARPEGE by F. Bouyssel
  • 3MT : sub-grid aspects, interactions by R. Brozkova
  • 3MT in ARPEGE – ALADIN: implementation, first results by JM Piriou
• DDH
  • Flexible dataflow for diagnostics (DDH): application DDH to AROME by O. Rivière & JM Piriou (see also the specifications document : Proposal for a new diagnostic dataflow in Arome physics)
  • DDH actions
• microphysics
  • Convergence on MICROPHYSICS between AROME and ALARO-0 and associated manpower by C. Lac
  • Action about selective externalisation of the AROME microphysics by C. Wittmann
  • Treatment of microphysics for the evaluation of “3MT†in ARPEGE/ALADIN-MF by F. Bouyssel, J.M. Piriou, Y. Bouteloup, E. Bazile
  • Intermediate stage analysis of the WG on ‘microphysics’
• interface
  • Proposals on interfacing of physical parameterisations, document prepared by F. Bouyssel & co-authors of CNRM, 05/07/2008
  • Action on physical interfaces by F. Bouyssel and B. Catry
• final
  • ALADIN : a common tool for different uses : consensus, how to collaborate, open questions : conclusions from V. Cassé

Finalized lists of actions

• summary of the working group on “physics/dynamics†interfaces including DDH and equations
• summary of the working group on "microphysics"
• summary of the working group on "3MT and shallow convection"