Research Article
The Impact of Length-Scale Variation When Diagnosing the Standard Deviations of Background Error in a 4D-Var System and Filtering Method Investigation
Figure 1
The vorticity standard deviation field at 1000 hPa estimated from (a) 10 samples, (b) 50 samples, (c) 100 samples, (d) 200 samples, (e) 1000 samples, and (f) 10000 samples.
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