Latitudinal variation of HNO3, HCl and HF vertical column density above 11.5 km

Abstract
Simultaneous spectral observations in the atmosphere have been obtained for HNO3, HCl and HF in April‐May 1980, by the solar occultation technique, from an aircraft, between 64° North and 62° South. For these three species, the vertical column density above 11.5 km increases from low latitude in both hemispheres.