PDAF_iau_reset
This page documents the routine PDAF_iau_reset
of PDAF, which was introduced with PDAF V3.0.
This routine is used to modify the IAU type and the number of IAU time steps during a run. While `PDAF_iau_init` sets the IAU type and number of IAU steps initially, one can change these settings during a model run.
The routine has to be called by all processes that are model processes. A common place is to call the routine in assimilate_pdaf
after an analysis step or in distribute_state_pdaf
.
The interface is:
SUBROUTINE PDAF_iau_reset(type_iau, nsteps_iau, flag) INTEGER, INTENT(in) :: type_iau ! Type of IAU ! (0) no IAU ! (1) constant increment weight 1/nsteps_iau ! (2) Linear IAU weight with maximum in middle of IAU period ! (3) Zero weights for null mode (can be used to apply IAU on user side) INTEGER, INTENT(in) :: nsteps_iau ! number of time steps in IAU INTEGER, INTENT(out) :: flag ! Status flag
Hints:
- It is recommended to only call this routine after or just before a forecast phase.
- Calling this routine during a forecast phase will change the IAU weights and might stop the application of IAU if
nsteps_iau
is below the number of time steps performed in the current forecast phase.
Last modified
6 days ago
Last modified on Mar 24, 2025, 7:56:59 PM
Note:
See TracWiki
for help on using the wiki.