Atmospheric gravity wave propagation direction observed by airglow imaging in the South American sector |
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| Authors: | AF Medeiros H Takahashi RA Buriti KM Pinheiro D Gobbi |
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| Institution: | aUniversidade Federal de Campina Grande /DF/CCT, Brazil;bInstituto Nacional de Pesquisas Espaciais (INPE), Brazil |
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| Abstract: | Airglow all sky imaging observation has been carried out in three different locations in south America, at Cachoeira Paulista (22.7°S, 45.0°W) in 1999, São João do Cariri (7.5°S, 36.5°W) in 2001 and Boa Vista (2.8°N, 60.7°W) in 2002. Comparing the atmospheric gravity wave characteristics retrieved from the image data for the three different sites and including a previous work at Alcântara (2.3°S, 44.5°W) carried out by Taylor et al. 1997. Journal of Geophysical Research 102 (D22) 26,283–26,299], we found that there is a preferential propagation direction, from the Continent to the Atlantic Ocean. The observed wave propagation directions reveal that a major part of the waves have their direction from Continent toward Ocean. The possible source of the wave generation is discussed. |
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| Keywords: | Gravity wave Airglow Imager Winds |
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