Tropical nightglow observations and predictions from ionospheric models |
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| Affiliation: | 2. Observatoire de Haute Provence, 04870, St Michel l''Observatoire, France;3. Instituto de Pesquisas Espaciais, C.P. 515, 12200 São José dos Campos, Brazil;4. Centre National d''Etudes Spatiales, 129 rue de l''Université, 75327, Paris, Cedex 07, France;1. Department of Physics, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India;2. Aryabhatta Research Institute of Observational Sciences, Nainital 263001, Uttarakhand, India;3. Environmental Sciences and Biomedical Metrology Division, CSIR National Physical Laboratory, New Delhi, India |
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| Abstract: | To study the tropical nightglow emissions in the vicinity of the Brazilian magnetic anomaly, two balloons were flown in February 1973 and 1977 carrying photometers. The behaviour in the tropical nightglow of the 630 and 557.7 nm lines is described and compared with predictions based on recent ionospheric models. Possible effects of the magnetic activity on the F2-layer in the tropics are suggested which are not accounted for by the ionospheric models. |
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