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AGU: Geophysical Research Letters

 

Index Terms

  • Atmospheric Composition and Structure: Middle atmosphere—composition and chemistry
  • Atmospheric Composition and Structure: Pressure, density, and temperature
  • Meteorology and Atmospheric Dynamics: Climatology
  • Meteorology and Atmospheric Dynamics: Remote sensing

Abstract

GEOPHYSICAL RESEARCH LETTERS, VOL. 29, 2067, 4 PP., 2002
doi:10.1029/2002GL015578

The potassium density and temperature structure in the mesopause region (80–105 km) at a low latitude (28°N)

C. Fricke-Begemann

Leibniz-Institute of Atmospheric Physics, Kühlungsborn, Germany

J. Höffner

Leibniz-Institute of Atmospheric Physics, Kühlungsborn, Germany

U. von Zahn

Leibniz-Institute of Atmospheric Physics, Kühlungsborn, Germany

By means of a groundbased lidar we have measured potassium layer parameters and the temperature structure in the mesopause region during 55 nights in 1999 at Tenerife (28°N). The potassium density shows a seasonal variation similar to that at midlatitudes. We also study the nocturnal mean temperatures and their seasonal variations and derive new evidence for the global two-level structure of the mesopause. About midsummer we observed the mesopause close to 86 km with about 183 K for a period of four weeks. Transition periods between the regular (high) and the low altitude state of the mesopause were two weeks each.

Published 27 November 2002.

Citation: Fricke-Begemann, C., J. Höffner, and U. von Zahn (2002), The potassium density and temperature structure in the mesopause region (80–105 km) at a low latitude (28°N), Geophys. Res. Lett., 29(22), 2067, doi:10.1029/2002GL015578.

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