These cross-sections are for great-circle arcs approximating HIAPER flight legs.
The beginning of each cross section is indicated by the large dot, which is plotted on left edge of the cross-sections below. Red and blue indicate the Lagrangian deformation (strain). Potential temperature is plotted in black. Potential vorticity is plotted in purple. The PV = 2 and PV = 4 contours are heavy. The normal component of the wind is contoured in gray. Positive is out of the page. Ticks are plotted along the paths at 1000 km intervals from the center.
