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8. Monitoring of Analysis Quality
Data-assimilation works well if the analysis increments (analysis minus first guess) are small compared
with the changes that the atmosphere experiences on average from one cycle to the next. In addition
to a set of 15 synoptic analysis maps, which were produced at each analysis cycle, the following
diagnostics were produced:
- A set of 13 synoptic analysis increment maps at each analysis cycle.
- Monthly time series plots of the global mean and standard deviation of the cycle analysis
increments.
- Monthly maps of the temporal mean and standard deviation of the analysis increments.
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