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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Tidal variations of O
2
atmospheric and OH(6-2) airglow and temperature at mid-latitudes from SATI observations
Annales Geophysicae, Volume 23, No. 12, Year 2005
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Description
Airglow observations with a Spectral Airglow Temperature Imager (SATI), installed at the Sierra Nevada Observatory (37.06° N, 3.38° W) at 2900-m height, have been used to investigate the presence of tidal variations at mid-latitudes in the mesosphere/lower thermosphere region. Diurnal variations of the column emission rate and vertically averaged temperature of the O2 Atmospheric (0-1) band and of the OH Meinel (6-2) band from 5 years (1998-2003) of observations have been analysed. From these observations a clear tidal variation of both emission rates and rotational temperatures is inferred. It is found that the amplitude of the daily variation for both emission rates and temperatures is greater from late autumn to spring than during summer. The amplitude decreases by more than a factor of two during summer and early autumn with respect to the amplitude in the winter-spring months. Although the tidal modulations are preferentially semidiurnal in both rotational temperatures and emission rates during the whole year, during early spring the tidal modulations seem to be more consistent with a diurnal modulation in both rotational temperatures and emission rates. Moreover, the OH emission rate from late autumn to early winter has a pattern suggesting both diurnal and semidiurnal tidal modulations. © European Geosciences Union 2005.
Authors & Co-Authors
López-González, María José
Spain, Granada
Instituto de Astrofísica de Andalucía - Csic
Rodríguez, E.
Spain, Granada
Instituto de Astrofísica de Andalucía - Csic
Shepherd, Gordon G.
Canada, Toronto
York University, Centre for Research in Earth and Space Science
Sargoytchev, Stoyan I.
Canada, Toronto
York University, Centre for Research in Earth and Space Science
Shepherd, Marianna G.
Canada, Toronto
York University, Centre for Research in Earth and Space Science
Aushev, V. M.
Kazakhstan, Almaty
Ministry of Education and Science of the Republic of Kazakhstan
Brown, Stephen
Canada, Toronto
York University, Centre for Research in Earth and Space Science
García-Comas, Maya
Spain, Granada
Instituto de Astrofísica de Andalucía - Csic
Wiens, Rudolph H.
South Africa
University of Asmara
Statistics
Citations: 9
Authors: 9
Affiliations: 4
Identifiers
Doi:
10.5194/angeo-23-3579-2005
ISSN:
09927689
e-ISSN:
14320576
Research Areas
Environmental