Sample Assimilation Runs of the Double Pendulum System

Index to sample runs


Run No. & type Purpose View Assim.conf file and plot(s)
1. No data assim. Generate exact solution and a set of pseudo obs. Assim.conf Results
2. No data assim. Examine sensitivity to initial conditions. Assim.conf Results
3. '4d'-Var 2 sec of observations (in 5 sec run). Observations are of both angles, but not their speeds. Assim.conf Results
4. Insertion 2 sec of observations (in 5 sec run). Observations are of both angles, but not their speeds. Assim.conf Results
5. '4d'-Var As run 3, but some observations have been moved well away from the exact solution. This has been taken into account by the increased size of their errors. Assim.conf Results
6. '4d'-Var As run 3, but some observations have been moved well away from the exact solution. Unlike in run 5, this has NOT been taken into account by the size of their errors, and so the assimilation scheme thinks they are accurate observations. Assim.conf Results
7. Insertion As run 4, but some observations have been moved well away from the exact solution - as in run 5 (note that insertion runs take no account of the observation error). Assim.conf Results
8. '4d'-Var As run 3, but some observations have been removed. Assim.conf Results
9. Insertion As run 4, but some observations have been removed. Assim.conf Results
Run No. & type Purpose View Assim.conf file and plot(s)


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