Royal Netherlands Meteorological Institute

 
Research
ENSO and seasonal forecasts
Verification of the ECMWF seasonal forecasts
In contrast with weather forecasts, the skill of seasonal forecasts depends strongly on the location and the season. For the period 1987-2001 (all months) and 1958-2001 (February, May, August and November starts) we have computed where the ECMWF seasonal forecasts were good, reasonable and useless.
Analysis date Available Verification
1 January 15 January
1 February 15 February
1 March 15 March
1 April 15 April
1 May 15 May
1 June 15 June
1 July 15 July
1 August 15 August
1 September 15 September
1 October 15 October
1 November 15 November
1 December 15 December