Methane on Uranus: The case for a compact CH4 cloud layer at low latitudes and a severe CH4 depletion at high-latitudes based on re-analysis of Voyager occultation measurements and STIS spectroscopy

► Reanalysis of Voyager Uranus radio occultation results yields new profiles for CH4. ► Model CCD spectra are computed for each profile using compact cloud layers. ► The fit to observed spectra is best with profiles having about four pressure percent deep methane. ► The best model upper compact cloud matches the CH4 occultation cloud. ► From 45 to 60°S methane is increasingly depleted to a depth of several bars.