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Seasonal Variations of Temperature near the Mesopause from Fabry-Perot Interferometer Observations of OH Meinel Emissions
Advances in Space Research
  • G H Choi
  • I K Monson
  • Vincent B Wickwar, Utah State University
  • D Rees
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Doppler temperatures have been obtained in the mesopause region (85 km) above Bear Lake Observatory, Utah, over a period of two years, using the hydroxyl (OH) emission. The mid-latitude mesopause temperature decreases 60 K from a winter maximum of 220 K to a summer minimum of 160 K. ‘Sudden Mesopause Cooling’ Events of 30 K amplitude have been observed during mid-winter, one in January 1994 and two in January / February 1995, which appear to be associated with ‘stratospheric sudden warming’ phenomena. Tidal variations in temperature can be observed by taking hourly averages of data over a one-month period. The largest tidal amplitudes, of 10 – 20 K, occur during winter, while amplitudes in summer are smaller, 2 K.

Originally published by Elsevier in Advances in Space Research.Publisher's PDF available through remote link. May require subscription if user is not on the USU Network.
Citation Information
G. H. Choi, I. K. Monson, V. B. Wickwar, D. Rees, Seasonal variations of temperature near the mesopause from Fabry-Perot interferometer observations of OH Meinel emissions, Advances in Space Research, Volume 21, Issue 6, Proceedings of the C0.1 Symposium of COSPAR Scientific Commission C, 1998, Pages 843-846, ISSN 0273-1177, DOI: 10.1016/S0273-1177(97)00685-6.