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Use up/down arrows to compare F_s, F_VR, and F_DR.

(1) 700 hPa PSI (black contours every 3x10⁶ m² s^-1; negative solid, positive dashed), T (green dashed contours every 3^oC), F_s (arrows in x10^-7 Pa m^-1 s^-1), and Total RHS (neglecting the Beta term) of QG Omega equation (shaded in x10^-12 Pa m^-2 s^-1) (F_s-vector form).
(2) 700 hPa PSI (black contours every 3x10⁶ m² s^-1; negative solid, positive dashed), T (green dashed contours every 3^oC), F_VR (arrows in x10^-7 Pa m^-1 s^-1), and Total RHS (neglecting the Beta term) of QG Omega equation (shaded in x10^-12 Pa m^-2 s^-1) (F_VR-vector form).
(3) 700 hPa PSI (black contours every 3x10⁶ m² s^-1; negative solid, positive dashed), T (green dashed contours every 3^oC), F_DR (arrows in x10^-7 Pa m^-1 s^-1), and Total RHS (neglecting the Beta term) of QG Omega equation (shaded in x10^-12 Pa m^-2 s^-1) (F_DR-vector form).
NCEP GFS analyses and forecasts on 1x1 latitude-longitude grid are smoothed with a 9-point local smoother run 30 times.