Modulations in the polar mesosphere summer echoes and associated atmospheric gravity waves
Journal Article
·
· Geophysical Research Letters (American Geophysical Union); (USA)
- Coleg Prifysgol Cymru, Aberystwyth (England)
- Southampton Univ., Southhampton (England)
- Auroral Observatory, Tromsoe (Norway)
- EISCAT Scientific Association, Kiruna (Sweden)
Mesospheric observations were made by the EISCAT VHF radar. On one occasion a relatively weak Polar Mesosphere Summer Echo (PMSE) was observed with its intensity varying with a period of about 27 minutes. Immediately below the PMSE layer an atmospheric gravity wave was observed, also with a period of about 27 minutes. The maximum intensity of the PMSE correspond to the maximum upward velocity associated with the wave. Particle precipitation, Adiabatic cooling due to the upward velocity and wave steepening and breaking at the mesopause may all play a role in causing PMSEs.
- OSTI ID:
- 5481038
- Journal Information:
- Geophysical Research Letters (American Geophysical Union); (USA), Journal Name: Geophysical Research Letters (American Geophysical Union); (USA) Vol. 16:12; ISSN 0094-8276; ISSN GPRLA
- Country of Publication:
- United States
- Language:
- English
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