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SUMMARY:Adaptive mesh method in the Met Office variational data assimilati
 on system - Piccolo\, C (Met Office)
DTSTART:20120823T100000Z
DTEND:20120823T103000Z
UID:TALK39370@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:A frequent problem in forecasting fog or icy roads in a numeri
 cal weather prediction system is attributed to the misinterpretation of th
 e boundary layer structure in the assimilation procedure. Case studies sho
 wed that much of the misinterpretation of temperature inversions and strat
 ocumulus layers in the assimilation is due to inappropriate background err
 or covariances. This paper looks at the application of adaptive mesh metho
 ds in the Met Office variational assimilation system to modify the backgro
 und error correlations in the boundary layer when temperature inversions o
 r stratocumulus layers are present in the background state. \n
LOCATION:Seminar Room 1\, Newton Institute
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