Changes between Version 2 and Version 3 of U_prepoststep

Timestamp:

Jan 22, 2015, 8:56:17 AM (10 years ago)

Author:

lnerger

Comment:

--

U_prepoststep

@@ -27 +27 @@
  * For the local filters (LESTKF, LETKF, LSEIK) `dim_obs_p` is the observation dimension for the `full` observations.
  * The array `Uinv` is only needed for SEEK filter. Also one needs its values for the ESTKF, ETKF, and SEIK filter to compute the analysis error covariance matrix when these filters used with a fixed-covariance matrix (subtype=3). In all other cases the ensemble array `ens_p` contains all required information.
+ * The interface has a difference for ETKF and ESTKF: For the ETKF, the array `Uinv` has size `dim_ens` x `dim_ens`. In contrast it has size `dim_ens-1` x `dim_ens-1` for the ESTKF. (For most cases, this will be irrelevant, because most usually the ensemble array `ens_p` is used for computations, rather than `Uinv`. Only for the SEIK filter with fixed covariance matrix, `Uinv` is required to compute the estimate analysis error. The fixed covariance matrix mode is not available for the ETKF or ESTKF.)
+ * For the local filters (LESTKF, LETKF, LSEIK) the matrix `Uinv` does not contain useful information, because its values are from the last processed local analysis domain only. 
+
 
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