PSD generates experimental forecasts on time-scales of weeks to seasons as part of its research mission.
The forecasts and associated information such as verifications are available on the following webpages. It
is planned that these forecasts will eventually be transitioned to operational mode.
PSD has developed an experimental forecast product that uses ensembles of very high spatial resolution NCEP GFS forecasts to predict
hurricane positions as well as weather variables including near surface winds, water vapor and upper atmospheric variables.
The ESRL/PSD 2nd-generation Reforecast Project has produced a dataset of historical weather forecasts generated with a fixed numerical model, using the 2012 version of NCEP's Global Ensemble Forecasting System (GEFS). This Reforecast V2 dataset consists of an 11-member ensemble of forecasts, produced every day from 00 UTC initial conditions from Dec 1984 to present. The horizontal resolution of GEFS is T254 (about 50 km) out to 8 days, and T190 (about 70 km) from 8-16 days. Real-time forecasts are ongoing. Probabilistic forecasts of 6-10 day and week 2 500mb height, 250mb winds, 850mb temperature and precipitation are provided.Prediction maps show upper and lower tercile anomalies, average ensemble values and verifications.
A empirical dynamical technique, linear inverse modeling (LIM), is used to
calculate forecasts regions of the tropical Pacific Ocean SSTs ("ENSO"), the
tropical Atlantic Ocean SSTs, and the tropical Indian Ocean and the North Atlantic. LIM SST
Forecasts are for 3 months to 12 months from the current date. Forecasts
are presented as maps of global tropical SST forecasts and timeseries
plots that include forecast history and verification.