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Systematic errors maybe due to model deficiencies and/or observational representativeness. These can be partly corrected by statistical means (e.g. model output statistics MOS). A series of forecasts also helps with dealing with uncertainty.
Non-systematic synoptic errors can be dampened by different ensemble approaches (e.g. medium range ensemble, probability considerations, forecast error growth).
Sub-grid variability (notably for rainfall but other parameters too) can be addressed by downscaling.
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New downscaling techniques are being developed accordingly (see for example the Point Rainfall product).
(FUG Associated with Cy49r1)
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