| Version 20 (modified by , 5 years ago) (diff) |
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Implementation of the analysis step
Implementation Guide
- Main page
- Adaptation of the parallelization
- Initialization of PDAF
- Modifications for ensemble integration
- Implementation of the analysis step
- Implementation for ESTKF
- Implementation for LESTKF
- Implementation for ETKF
- Implementation for LETKF
- Implementation for SEIK
- Implementation for LSEIK
- Implementation for SEEK
- Implementation for EnKF
- Implementation for LEnKF
- Implementation for NETF
- Implementation for LNETF
- Implementation for PF
- Memory and timing information
The implementation of the analysis step requires that the user-supplied routines whose names are given in the call to the filter-specific put-state routine are implemented with full functionality.
Several of the routines are general and hence usable for all filter algorithms. There are some differences between the available local and global filters. The routines are described in separate pages for each filter algorithm. The general routines will be repeated, but they are marked as general.
Filter-specific implementations for global filters:
- Implementation of the analysis for the ESTKF
- Implementation of the analysis for the ETKF
- Implementation of the analysis for the SEIK filter
- Implementation of the analysis for the SEEK filter
- Implementation of the analysis for the EnKF
- Implementation of the analysis for the NETF
Filter-specific implementations for local filters:
- Implementation of the analysis for the LESTKF
- Implementation of the analysis for the LETKF
- Implementation of the analysis for the LSEIK filter
- Implementation of the analysis for the LEnKF
- Implementation of the analysis for the LNETF
(The filters ESTKF and LESTKF have been added with PDAF version 1.8; the filters LEnKF, NETF and LNETF have been addid with PDAF version 1.12)
Testing the full implementation
After the implementation of the user-supplied routines for the analysis step, the data assimilation system is fully implemented. In order to test the program one has to compile it without setting 'PDAF_NO_UPDATE'.
To speed up the testing it can be useful to comment out the time stepping part. In that case only the model initialization and the assimilation cycle would be executed, without the usually costly time integration of the ensemble. One should then check if all user-supplied routines perform as they should.
