1000 hPa Height, 1000-500 hPa Thickness, and Term C Sutcliffe-Petterssen
Caption: +1000 hPa geopotential height (solid contours every 30 m). +1000-500 hPa thickness (dashed contours every 6 dam). +Term C of the Sutcliffe-Petterssen Development theory equation [shaded according to the colorbar (10-9 s-2)]. Warm (cold) colors denote regions of 1000 hPa positive (negative) vorticity tendency. +Image was generated from smoothed 1.0x1.0o NCEP-GFS data.