A note on the features and cause of the diurnal variation of neutral air density at 205 km |
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| Affiliation: | 1. Estonian Biocentre, Riia 23b, 51010 Tartu, Estonia;2. Institute of Molecular and Cell Biology, University of Tartu, Riia 23, 51010 Tartu, Estonia;3. Institute of Computer Science, University of Tartu, Liivi 2, 50409 Tartu, Estonia;1. Département de géographie, Université Laval, Quebec City, Quebec, Canada;2. Department of Geosciences, Tel Aviv University, Tel Aviv, Israel;3. Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD, USA |
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| Abstract: | The diurnal variation of air density at 205 km, deduced from changes in the orbit of Sputnik 3 satellite, is shown to have different characteristics in the low and high latitude regions of the southern hemisphere. At lower latitudes the maximum density occurs at 1400 hours L.T. and is 17 per cent greater than the minimum density, while at higher latitudes the maximum density occurs at 1700 hours and is 12 per cent greater than the minimum. |
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