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ALADIN
A transition year
EWGLAM/SRNWP, Dubrovnik, 8/10/07
ALADIN 2006=>2007• Preparation of the ALADIN strategic 10 year plan
– Collective effort from:• An ad-hoc ‘taskforce’• Policy Advisory Committee• PM and an editing mini-group
– Final version hopefully available in November (quite needed to go to a multi/year planning structure (some lack of continuity in current long-term oriented efforts)
• AROME preparing for 2008 operational implementation in Toulouse.
• ALARO also (with some partial steps at ~10km [i.e. without 3MT yet], Cz, At …).
• Operational implementation schedule
• Examples: the good and the bad
• Outlook
News about AROME (as of Oct 07)
Operational implementation plan at MF
2007 2008 2009
dyn. adaptationtest runs
3DVar assimilationtest runs
preoperationaltest suite
operational productionArome v1
oper. prod.Arome v2
forecasters feedback & getting used to model behaviour
R&D Doppler radar assimilation R&D reflectivity, convection & clouds assimilation
nowcasting & relocatable versions
optimisation on MF's NEC
The Arome-France model config
Arome-France current domain
Aladin-France domain
Some other AROMEs...Alps (MAP D-PHASE experiment)
ongoing test runs by HIRLAM partners (FMI, DMI, SMHI)
and some more (Hungary...)
Here on a Paris thunderstorm case, missed by the lower resolution ALADIN assimilation, and by AROME in dynamical adaptation mode.
The improvement comes from low-level SYNOP T,HU,wind obs
Short-range forecast improvementthanks to local data assimilation
obs dyn. adaptation fc from assimilation
3-h rain
forecast
A typical nice forecast of low clouds
model
cloudy
areas
A tendency to overpredict density currents
near thunderstorms: under investigation
The 10km mesh base-line is stabilised and is already operationally or (pre-operationally) implemented, with good objective scores, especially for precipitations.
The work on the 5km mesh convective package (integrated, prognostic and multi-scale-oriented => 3MT) is ongoing, hard (upper-air scores just at break-even) but promising.
A word about ALARO
3MT
3MT: precip. outcome (provisional)
Without 3MT With 3MT
Outlook (until next EWGLAM)
For AROME: scientific work priorities: turbulence (i.e. numerical diffusion vs subgrid turbulence), physics/dynamics interaction in convective clouds, initialisation of precipitating clouds;increase vertical resolution.
For ALARO:Concretise the first good results with the full configuration;Go back to check the scale independency again;Create the conditions for a good oper support.