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Data Assimilation
The PALM coupler provides a natural software framework for the
implementation of data assimilations suites.
A data assimilation application can be thought as a dynamic coupling of
a model with some entities dealing with the observations and the error
statistics and some algebraic treatments.
The most useful PALM features for such
applications are:
- The independent interfaces, allowing the use of existing models or assimilation related units for different configurations or algorithms.
- The dynamic flow control, allowing the implementation of every kind of data assimilation algorithm.
- The graphical user interface, making the set-up and the understanding of the data assimilation suite very easy.
- The management of parallel communications, making the overall implementation independent of the parallelization of every single coupled unit.
- The two levels of parallelism, allowing the best performances of the algorithm.
- The explicit time reference for the exchanged fields and the time interpolation utilities, allowing a complete independence between the model time stepping and the observation frequency.
- The predefined algebra toolbox, providing the necessary linear algebra and minimization functions.
- The debugging, performances analysis and run time monitoring tools, simplifying the set-up, the tuning and the control of the assimilation suites.
Some examples of data assimilation
suites implemented with PALM are found in the "applications"
section.