Changes between Initial Version and Version 1 of init_obsvars_pdaf


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Timestamp:
Mar 23, 2025, 9:03:12 AM (10 days ago)
Author:
lnerger
Comment:

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  • init_obsvars_pdaf

    v1 v1  
     1= init_obsvars_pdaf =
     2
     3The page documents the user-supplied call-back routine `init_obsvars_pdaf`, which was introduced with PDAF V3.0.
     4
     5The routine `init_obsvars_pdaf` (named `U_init_obsvars` inside PDAF) is a call-back routine that has to be provided by the user. 
     6The routine is used only with the ENSRF/EAKF. The routine is called by PDAF during the analysis step and has to provide the filter with a vector of observation error variances.
     7
     8The interface is the following:
     9{{{
     10  SUBROUTINE init_obsvars_pdaf(step, dim_obs_f, var_f)
     11}}}
     12with arguments:
     13{{{
     14  INTEGER, INTENT(in) :: step           ! Current time step
     15  INTEGER, INTENT(in) :: dim_obs_f      ! Dimension of full observation vector
     16  REAL, INTENT(out) :: var_f(dim_obs_f) ! vector of observation error variances
     17}}}
     18
     19The variance vector `var_f` is for the full observation vector.
     20