Changes between Version 67 and Version 68 of FeaturesofPdaf


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Timestamp:
Dec 8, 2019, 12:55:41 PM (5 years ago)
Author:
lnerger
Comment:

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  • FeaturesofPdaf

    v67 v68  
    1111PDAF simplifies the implementation of data assimilation systems using existing model code by the following:
    1212
    13  1. PDAF provides fully implemented, parallelized, and optimized ensemble-based algorithms for data assimilation. Currently, these are ensemble-based Kalman filters like the LSEIK, LETKF, and EnKF methods.
     13 1. PDAF provides fully implemented, parallelized, and optimized ensemble-based algorithms for data assimilation. Currently, these are ensemble-based Kalman filters like the LETKF, LESTKF, and EnKF methods. Further nonlienar filters are provided.
    1414 1. PDAF is attached to the model source code by minimal changes to the code, which we call 'online mode'. These changes only concern the general part of the code, but not the numerics of the model. In addition, a small set of routines is required that are specific to the model or the observations to be assimilated. These routines can be implemented like routines of the model.
    1515 1. PDAF is called through a well-defined standard interface. This allows, for example, to switch between the LETKF, LESTKF, and LSEIK methods without additional coding.