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  • 1 Geophysical Commission Hechelstrasse 8, D-28777 Bremen, Germany
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The seasonal frequency of noctilucent clouds has been discussed on the basis of visual data from the Northern Hemisphere. It is shown that there is a strong dependence on the atmospheric constitution at the mesospheric level and the seasonal transition in the mesopause. Before spring transition and after autumn transition of the mesosphere at the 80 km level no NLC are observed on the Northern Hemisphere.  Conversely we can conclude the same distribution for the Southern Hemisphere and the strong relation between transition periods and occurrence of NLC.

  • Faust H 1967b: Pure appl. Geophys., 66, 156.

    () 66 Pure appl. Geophys. : 156.

  • Glöde P 1966: Kleinh. Berichte, 11, 157.

    () 11 Kleinh. Berichte : 157.

  • Grjebine T 1967: In: Mantles of the Earth and terrestrial planets, S K Runcorn ed., London, New York, Sydney

    Mantles of the Earth and terrestrial planets , ().

  • Haurwitz B 1964: Comments on wave forms in noctilucent clouds. UAG-R 160

    'Comments on wave forms in noctilucent clouds ' () UAG-R : 160.

  • Hemenways C L, Soberman R K, Witt G 1964: Tellus, 14, 84.

    () 14 Tellus : 84.

  • Hesstvedt E 1962: On the possibility of ice cloud formation at the mesopause. Tellus 14, 290

    'On the possibility of ice cloud formation at the mesopause ' () 14 Tellus : 290.

  • Hesstvedt E 1967a: Noctilucent cloud observations and deductions. Lecture IQSY/COSPAR Ass London

    Noctilucent cloud observations and deductions , ().

  • Hesstvedt E 1967b: On the moisture content near the mesopause and its relation to the formation of noctilucent clouds. Lecture IAMAP Ass. 1967

    'On the moisture content near the mesopause and its relation to the formation of noctilucent clouds ' () Lecture IAMAP Ass. : 1967.

    • Search Google Scholar
  • Hoffmeister C 1952: Die Sterne, 28, 7.

    () 28 Die Sterne : 7.

  • Kellogg W W 1961: J. Meteorol., 18, 373.

    () 18 J. Meteorol. : 373.

  • Kohl G 1968: Gerlands Beitr. Geophys., 77, 159.

    () 77 Gerlands Beitr. Geophys. : 159.

  • Oleak H 1956/57: Wiss. Z. Univ. Jena, math.-naturw. R., 6, 133.

    () 6 Wiss. Z. Univ. Jena, math.-naturw. R. : 133.

  • Schröder W 1966: Gerlands Beitr. Geophysik, Heft 4.

    () Gerlands Beitr. Geophysik : 4.

  • Schröder W 1968 Gerlands Beitr. Geophys., 77, 303.

    () 77 Gerlands Beitr. Geophys. : 303.

  • Soberman R K 1966: In: 1966 Yearbook of science and technology. D N Lapedes ed., New York

    1966 Yearbook of science and technology , ().

  • Theon J S, Smith W S 1969: Seasonal transitions if the thermal structure of the mesosphere at high latitudes. GSFC X-621-69-393.

    Seasonal transitions if the thermal structure of the mesosphere at high latitudes , () 621 -69.

    • Search Google Scholar
  • Theon J S, Nordberg W, Smith W S 1967: Science, 157, 419.

    () 157 Science : 419.

  • Vasilyev O B 1967: On the noctilucent clouds (in Russian). Inform. soobsc. Nr. 4

    'On the noctilucent clouds (in Russian) ' () Inform. soobsc. Nr. : 4.

  • Webb W L 1965: J. geophys. Res., 70, 4463.

    () 70 J. geophys. Res. : 4463.

  • Wegener A, Wegener K 1935: Vorlesungen über Physik der Atmosphäre. Bahrt, Leipzig, 244-246.

    Vorlesungen über Physik der Atmosphäre , () 244 -246.

  • Witt G, Martin-Löf J, Wilhelm N 1965: Space Res., 5, 820.

    () 5 Space Res. : 820.

  • Faust H 1967a: Meteorol. Rdsch., 20, 153.

    () 20 Meteorol. Rdsch. : 153.

  • Chapman S, Kendall P C 1965: Quart. J. Roy. Met. Soc., 91, 115.

    () 91 Quart. J. Roy. Met. Soc. : 115.