3DVAR Changes

• CURRENT NEW

• vertical coarse pressure exact model eta coordinate

• coordinate

• horizontal coarse unstaggered higher resolution unstaggered

• coordinate grid grid

• balance weak constraint on balanced variable separated from

• thermal wind unbalanced variables

• analysis stream&potential function balanced: stream function

• variables temperature, ref height unbalanced: potential function,

• temperature, sfc pressure

• background 17 parameters 14 parameters, with possibility of

• error real-time error evolution built in

• using Bayesian parameter estimation