Changes between Version 2 and Version 3 of U_prodRinvA
 Timestamp:
 Jan 21, 2016, 4:10:29 PM (5 years ago)
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U_prodRinvA
v2 v3 3 3 The page document the usersupplied callback routine `U_prodRinvA`. 4 4 5 The routine `U_prodRinvA` is a callback routine that has to be provided by the user. In the simplified interface the predefined name of the routine is init_obs_pdaf, but in the full interface, the user can choose the name of the routine.5 The routine `U_prodRinvA` is a callback routine that has to be provided by the user. In the simplified interface the predefined name of the routine is `prodRinvA_pdaf`, but in the full interface, the user can choose the name of the routine. 6 6 The routine is used with all global filters and called during the analysis step. The purpose of the routine is to compute the product of the inverse of the observation error covariance matrix with some matrix '''A''' (as '''R^1^''' x '''A'''). The matrix '''A''' holds an intermediate computing result of the filter analysis step. For the ESTKF this matrix holds the observed part of the ensemble perturbations. The matrix is provided as `A_p`. The product has to be returned in the array `C_p`. 7 7