Semi-empirical models of the neutral atmosphere based on turbopause height and exospheric temperature variations |
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| Affiliation: | 1. Advanced Logistics Research Team, Korea Railroad Research Institute, Railroad Museum road, Uiwang-Si, Gyeonnggi-Do 437-757, Republic of Korea;2. Department of Supply Chain Management, Eli Broad College of Business, Michigan State University, 632 Bogue Street, Room N370, East Lansing, Michigan 48824, United States;3. Department of Industrial Engineering, Hanyang University, 220 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea;1. CNRS, LEMTA, UMR 7563, Université de Lorraine – ESSTIN, 2 rue Jean Lamour, 54500 Vandoeuvre-les-Nancy, France;2. CNRS, LRGP, UMR 7274, Université de Lorraine, Nancy F-54000, France;1. Warwick Manufacturing Group, University of Warwick, Coventry CV4 7AL, UK;2. London South Bank University, 103 Borough Road, London, SE1 0AA, UK;3. The Faraday Institution, Quad One, Harwell Science and Innovation Campus, Didcot, UK;1. Arnold School of Public Health, University of South Carolina, United States;2. Institute for Mind & Brain, University of South Carolina, United States;3. Department of Kinesiology, University of Montreal, Canada;4. Center for Research in Neuropsychology and Cognition, University of Montreal, Canada |
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| Abstract: | Based on mass spectrometer observations of the satellites Ogo 6 and Esro 4 the long periodic density variations of He, O, N2 and Ar are interpreted to be a result of combined variations of the exospheric temperature and the turbopause height. Only these two parameters are used in the models. Thus in comparison with previous models the number of parameters needed is significantly reduced. This simplification does not diminish the accuracy of the analytic representation of the observations and provides new physical insight into the processes which govern the dynamic behaviour of the neutral thermosphere. The annual variation of the turbopause height is found to cover the height range between 90 and 115 km and is approximately equal for both the Ogo 6 and the Esro 4 data. |
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