Fig. 2From: Post-sunset rise of equatorial F layer—or upwelling growth?A composite of an altitude-time-intensity plot of F-region backscatter obtained with the JIC radar, shown with a grayscale, and h’F versus LT, which were scaled at 15 min intervals from HUA ionograms; 21 March 1979. The individual plots are from Kelley et al. (1981)Back to article page