2007
DOI: 10.1590/s0102-261x2007000600010
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Variação sazonal da aeroluminescência do sódio mesosférico em 7,4ºS, em torno da atividade solar máxima: ciclo #23

Abstract: ABSTRACT. The mesospheric sodium airglow emission occurs when the sodium atom decays from the excited level 2 P to the level 2 S, emitting at the line D in λ = 589.3 nm. Measurements of the emission's nocturnal intensity has been carried by a multichannel photometer installed in São João do Cariri (7, 38 • S; 36, 54 • w) since 1998. This work analyzed a data set corresponding to a period from 1998 to 2003, in order to study the emission's seasonal comportment. The analyses showed a strong seasonal variation. T… Show more

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