Analysis increments and background-error covariances
Analysis increments in response to a single observation of u located at a grid-point
- Expression of the analysis increment:
- Observation of u at point x1:
- Du = Buu(x1,x2)
- Dv = Bvu(x1,x2)
- DF = BFu(x1,x2)
- Minimization leads to the analysis increments for Dx out of which we obtain Du, Dv and DF by applying the changes of variables described above