500 hPa ACC
Europe · 12ZHow well each model's 500 hPa geopotential height pattern over Europe and the North Atlantic matches reality, up to 13 days ahead.
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.
METEOPROOF.COM
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.