Changes between Version 4 and Version 5 of OfflineImplementationGuide_PDAF3


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Timestamp:
Jul 3, 2026, 2:16:01 PM (9 hours ago)
Author:
lnerger
Comment:

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  • OfflineImplementationGuide_PDAF3

    v4 v5  
    4444
    4545The code structure is as follows from left to right
    46 * **column 1 'User code'**: The main program calls the four routines shown in this column. These are interface routines, which define variables for PDAF and then call core-subroutines of PDAF. An exception is `init_parallel_pdaf` which does not call PDAF.
     46* **column 1 'User code'**: The main program calls the four routines shown in this column. These are interface routines, which define variables for PDAF and then call core-subroutines of PDAF.
    4747* **column 2 'PDAF'**: These are the PDAF core routines which are called by the routines in column 1 to the left.
    48 * **column 3 'Call-back routines'**: This column shows the call-back routines, which are called by the PDAF routines in column 2 to the left. The routines in the purple box `callback_obs_pdafomi.F90` are the subroutines that handle observations. The 3 routines in red are used only for localized ensemble filters.
     48* **column 3 'Call-back routines'**: This column shows the call-back routines, which are called by the PDAF routines in column 2 to the left. The colors mark routines of different type in the program flow:
     49  * dark blue: The ensemble initialization routine
     50  * medium blue: pre/poststep routine to access the ensemble and compute diagnostics
     51  * purple: The routines in the purple box `callback_obs_pdafomi.F90` are the subroutines that handle observations.
     52  * red: The 3 routines in red are used only for localized ensemble filters. Of these, two routines with orange frame are called multiple times within the local analysis loop.
    4953* **column 4 'OMI observation modules'**: This column shows observation modules that are used for the specific handling of each observation type. This handling is arranged by the PDAF Observation Module Interface (OMI). The observation-related call-back routines in column 3 to the left call routines in each of the observation modules.
    5054* **column 5 'PDAF'**: Some of the call-back routines and the routines in the observation modules call PDAF core routines, e.g. for diagnostics, localization, and to intialize OMI.