Page History

...

• Variability around the climatological average, which measures the model’’s ability of a model to span the full climatological range
• The averaged analysed and forecast spatial variance over a specified area at a specific time e.g. a day; it may be presented as a time series
• The averaged temporal variability over a specified area, calculated over a sufficiently long time period. The variance can be computed for every grid point or as the change over 12 or 24 hours. It may be presented as geographical distributions (see Fig12.A.2).

...

The ME can be trusted to reflect the performance properties of the model’’s performance a model only during periods with no or small average anomalies.

...