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3DVAR Status
Best re-run of 30 December storm combined both new SST and AVN initial conditions
Differences identified between Eta and AVN
More general balance constraint is used in AVN’s analysis versus Eta 3DVAR
Efforts now complete to incorporate a stronger constraint in the Eta 3DVAR
Parameter estimation technique of Purser& Parrish being applied to retuning effort http://www.mmm.ucar.edu/wrf/WG4/bayes.ps