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Precipitation Weekly Hindcast Skill

Subseasonal skill score based on the historical performance of each calibrated SubX model and their 3-model ensemble.

Skill is mapped by calendar month for weekly lead times. Week 1 = days 2-8, Week 2 = days 9-15, Week 3 = days 16-22, Week 4 = days 23-29 after the forecast is issued). Forecasts skill scores combine start times by calendar month and across years 1999 to 2016.

These skill scores diagnostics maps give a sense of where and when (issued which months of the year and for which weekly lead times) subseasonal forecasts may have the potential to provide useful information. The actual forecasts, of which these skill scores are measuring the historical performance, are to be found in the Experimental Precipitation Subseasonal Forecast Maproom.

Skill scores definitions:

References:

Dataset Documentation

Forecasts Skill Scores: Global 1˚ Multi-Model Ensemble forecasts skill scores per month of the year over the period 1999-2016 available here.

Instructions

Helpdesk

Contact help@iri.columbia.edu with any technical questions or problems with this Map Room.