Several plots produced from one-month ensemble forecast provided by the Japan Meteorological Agency (JMA). Caution: These are experimental ones and updated only in NH winter by S. N.
Time series of zonal-mean temperature at 10 hPa, 80°N (top) and vertical component of E-P flux averaged over the region north of 50°N at 100 hPa (bottom).
PDF
Isolines of 5-day mean geopotential height at 10 hPa (top, 30000 gpm) and 500 hPa (bottom, 5500 gpm). Four panels from left to right show the average of 2-6, 9-13, 16-20 and 23-27 lead days.
Latitude-height cross section of zonal-mean zonal wind (top, contour interval is 10 m/s), E-P flux vector and its divergence (bottom, arrows kg/s2 and shade m/s2). Four panels from left to right show the average of 2-6, 9-13, 16-20 and 23-27 lead days.
Same as in the ensemble mean, except for each ensemble member.