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Showing 1–3 of 3 results
Advanced filters: Author: N. I. Ignatiev Clear advanced filters

  • Observations of infrared emission from CO2, O2 and NO established that photochemical and dynamic activity controls the structure of the upper atmosphere of Venus, but were unable to identify the altitude of the emission. But it is reported here that day-side CO2 emission extends from 90–120 km altitude, with a peak at ∼115 km. Night-side O2 emission peaks at 96 km and is visible over the range 95–100 km.

    • P. Drossart
    • G. Piccioni
    • Bernd Ulmer
    Research
    Nature
    Volume: 450, P: 641-645

  • Venus has a bright 'dipole' double-eye feature at the centre of a vast vortex that rotates around the north pole, and is surrounded by a cold 'collar'. Observations of Venus' south polar region are reported, where clouds with morphology much like those around the north pole are seen, but rotating somewhat faster.

    • G. Piccioni
    • P. Drossart
    • Bernd Ulmer
    Research
    Nature
    Volume: 450, P: 637-640