Lightning‐enhanced N2 + radiation in the night airglow

During the night of July 27–28, 1962, a zenith night airglow photometer recorded intense flashes of the 0–0 band of the first negative system of N2+ caused by lightning strokes in an electrical storm some 60 km distant. The peak intensity of the brightest flash was about 50 rayleighs above the background of 28 rayleighs for the 3914 A emission in the airglow above China Lake.