Ensemble mean weekly anomalies
Forecast User Guide: Graphical Output
2-metre temperature
z500 (North Pole projection)
Regime products
Forecast User Guide: Extended Range Regime Charts
For discussion around the utility and verification, see: https://www.ecmwf.int/en/newsletter/158/meteorology/new-product-flag-risk-cold-spells-europe-weeks-ahead
Extended Range Two-dimensional Regime diagram
Extended Range Weather Regime Frequency histogram
z500 Howmoller diagram
Forecast User Guide: Graphical Output
Drivers of predictability
Madden-Julian oscillation (MJO) index
Forecast User Guide: Madden-Julian Oscillation Output
Wheeler-Hendon MJO diagram
Teleconnection patterns from MJO in ERA-Interim (lag 10 days)
After phase 3 (left) and phase 6 (right)
Sudden Stratospheric Warmings (SSW)
