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Eos | Eos Transactions, American Geophysical Union

 

Index Terms

  • Atmospheric Composition and Structure: Cloud physics and chemistry
  • Atmospheric Composition and Structure: Aerosols and particles (0345, 4801)
  • Atmospheric Composition and Structure: Middle atmosphere—composition and chemistry

Abstract

EOS, TRANSACTIONS AMERICAN GEOPHYSICAL UNION, VOL. 84, NO. 28, PAGE 261, 2003
doi:10.1029/2003EO280001

FEATURE

Are noctilucent clouds a “Miner's Canary” for global change?

Ulf von Zahn

Leibniz-Institute of Atmospheric Physics, Kühlungsborn, Germany

Noctilucent clouds (NLC) occur close to 83 km altitude during summer at polar, high, and mid-latitudes. They are frequently visible to Earth-bound observers, provided the observers are on the night side of Earth and the clouds are still illuminated by the Sun. Under these conditions, NLC can become a quite impressive sight. NLC owe their existence to the extremely low temperatures (well below 150 K) which prevail during summer over a wide latitude band in the 82- to 90-km altitude region. For a major review of NLC science, the reader is referred to Gadsden and Schröder [1989].

Citation: von Zahn, U. (2003), Are noctilucent clouds a “Miner's Canary” for global change?, Eos Trans. AGU, 84(28), 261, doi:10.1029/2003EO280001.

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