First sodium nightglow results for Natal |
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Authors: | VWJH Kirchhoff H Takahashi |
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Affiliation: | Instituto de Pesquisas Espaciais, Conselho Nacional de Desenvolvimento Cientifico e Tecnológico, C.P. 515, 12200 — São José dos Campos, S.P., Brazil |
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Abstract: | The first year of sodium nightglow observations from Natal (6°S, 35°W) are examined. Time variations appear to follow a pattern of their own, different from low latitude results. The major seasonal peak occurs in September-October and the average variation during the night decreases from dusk to dawn. Statistics on cloud coverage show that Natal has roughly only about 3 clear hours per night. The best observing period is April with an average of 5 clear hours per night. |
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