NOAA PSL GEFS Reforecast Version 2
Note: As of 23 September 2020, the Global Ensemble Forecast System has been upgraded to a much improved version 12, and this page is now obsolete. New reforecasts are available via Amazon Web Services for free download, at https://noaa-gefs-retrospective.s3.amazonaws.com/index.html, and you are directed there for data access. It is straightforward to set up scripts to loop over days and members and download sequences of global fields using wget or curl. The experimental forecast product pages that we have developed based on the previous model version and reforecasts will not be updated; we have not received any resources for updating them, regrettably. If you have questions or comments about this dataset or the associated products, please contact: firstname.lastname@example.org
The NOAA Physical Sciences Laboratory 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, Version 10). 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.
Among the advantages associated with this long reforecast dataset is that model forecast errors can be diagnosed from the past forecasts and corrected, thereby dramatically increasing the forecast skill. Past results have shown that the improvements may be particularly large for medium-range forecasts and for forecasts of relatively uncommon events such as heavy precipitation.
If you have questions or comments about this dataset or the associated products, please contact: email@example.com
Forecast Products Based on PSL GEFS Reforecast Version2 Data
- Precipitation Forecasts, Based on Analog Methodology
- High Resolution Precipitation Forecasts, Based on Analog Methodology
- High Resolution Precipitation Forecasts, Based on CSGD Parametric Methodology
- California Medium-Range High Resolution Precipitation Forecasts, Based on CSGD Parametric Methodology
- Probabilistic Temperature and Height Forecasts, 2-3 to 8-14 Day Lead
- Daily Forecasts of PNA, NAO, EPO and WPO Teleconnection Indices
- Ensemble Forecast Spread at a Specified Geographic Location
- Daily Weather Forecast Maps, to 15 Day Lead