500 hPa height (solid contours every 6 dam) and QGPV (shaded in PVU).
The QGPV is multiplied by -g(d(theta)REF/dp) to convert from units of s-1 to PVU as described in Hakim et al. (1995, p. 2666).
NCEP GFS analyses and forecasts on 1x1 latitude-longitude grid are smoothed with a 9-point local smoother run 30 times.