Changes between Version 1 and Version 2 of PDAF_iau_add_inc


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Timestamp:
Mar 25, 2025, 7:41:02 PM (7 days ago)
Author:
lnerger
Comment:

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  • PDAF_iau_add_inc

    v1 v2  
    33This page documents the routine `PDAF_iau_add_inc` of PDAF, which was introduced with PDAF V3.0.
    44
    5 This routine is used with the flexible parallelization mode if a routine PDAF3_put_state_X (or any other PDAF*_put_state) routine is used. Since PDAF*_put_state is only called after a model state is intergrated over the forecast period, this routine cannot apply the increment. For this one has to call `PDAF_iau_add_inc` at each model time step in the time stepping loop of the model. This routine adds the increment for the currently integrated ensemble member according to the specified IAU type and number of IAU steps.
     5This routine is used with the flexible parallelization mode if a routine `PDAF3_put_state_X` (or any other PDAF*_put_state) routine is used. Since `PDAF*_put_state` is only called after a model state is integrated over the full forecast period, this routine cannot apply the increment. Hence, the routine `PDAF_iau_add_inc` has at each model time step in the time stepping loop of the model to apply the increment. This routine adds the increment for the currently integrated ensemble member according to the specified IAU type and number of IAU steps.
    66
    77The routine has to be inserted in time stepping loop of the model code. It has to be called at each time step.
     
    1010{{{
    1111  SUBROUTINE PDAF_iau_add_inc(U_collect_state, U_distribute_state)
     12
     13    EXTERNAL :: U_collect_state, &      ! Routine to collect a state vector
     14         U_distribute_state             ! Routine to distribute a state vector
    1215}}}
    13 with the following arguments:
    14 {{{
    15     EXTERNAL :: U_collect_state, &      !< Routine to collect a state vector
    16          U_distribute_state             !< Routine to distribute a state vector
    17 }}}