ESO WEATHER WATCH: Accuracy

Wind Velocity

Forecasts at Paranal at 00UT/12UT, 1999-2000

Error in m/s (for local wind velocityɮm/s)

mean mean absolute rms

ECMWF analysis 3.4/4.0 3.8/4.2 2.8/3.0

Kalman Filter -0.4/0.5 2.9/2.6 2.4/2.0

12-hour forecast 3.6/4.5 3.9/4.8 2.8/3.3