Planetary wave disturbances in the Arctic winter mesopause over Eureka (80 deg N)

Details Planetary wave disturbances in the Arctic winter mesopause over Eureka (80 deg N) Planetary wave disturbances in the Arctic winter mesopause over Eureka (80 deg N)

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994p%26ss...42..973s&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 42, no. 11, p. 973-986

Astronomy and Astrophysics

Astronomy

19

Airglow, Arctic Regions, Brightness, Gravity Waves, Infrared Astronomy, Infrared Spectra, Mesopause, Planetary Waves, Fourier Transformation, Hydroxyl Radicals, Least Squares Method, Michelson Interferometers, Oxygen, Rotational States, Spectrum Analysis, Tides, Time Series Analysis

Scientific paper

Absolute brightness and spectral distributions of the near infrared (1.0 - 1.7 micrometers) polar airglow OH M and O2 IR band emissions were recorded with a Michelson Interferometer operating at Eureka (80 deg N), Canada, from November 1992 to February 1993. Continuous observations of the variations in the OH M (3, 1) band brightness (I) and rotational distribution temperature (T), over a 450-h period from 18 November 1992 to 7 December 1992 (with brief periods of cloudiness affecting only I) show variations indicating planetary wave, tidal and gravity wave activity in the middle atmosphere over Eureka. We have identified three wave-like variations in I and T that are most likely manifestations of the well established quasi 4-, 5-, and 16-day traveling planetary waves observed in the stratosphere. We believe this is the first identification of quasi 4-, 5- and 16-day waves in the very high latitude mesopause region. The dominat oscillation in our observations is the quasi 5-day planetary wave. Our observations are consistent with model calculations of the perturbing effects of planetary waves on polar airglow emissions.

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