METEOPROOF
500 hPa ACC
Europe · 12ZSynoptic model verification
ACC Performance
Mean anomaly correlation coefficient by forecast lead time.
Verification period
Model run
METEOPROOF.COM
ACC Trend
Mean anomaly correlation coefficient at a fixed forecast lead time, by day.
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Verified against analysis
Example verification
500 hPa geopotential height, same verification area and 1° × 1° grid
GFS · −7 days
Forecast
GDAS · 00Z
Analysis
Forecast error
GFS − GDAS
The forecast is compared to the analysis at the same moment, within the same verification area.
ACC 0.00 · RMSE 0 m
Illustrative example, not a live current score.