Modeling the low-latitude ionospheric electron density and plasma turbulence in the November 2004 storm period |
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| Authors: | JM Retterer Ronald Ilma MC Kelley Jorge L Chau CE Valladares LC Gentile K Groves |
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| Institution: | 1. Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731, USA;2. School of Electrical and Computer Engineering, Cornell University, Ithaca, NY, USA;3. Radio Observatorio de Jicamarca, Instituto Geofisico del Peru, Lima, Peru;4. Institute for Scientific Research, Boston College, Chestnut Hill, MA, USA;1. Centro de Rádio Astronomia e Astrofísica Mackenzie (CRAAM), Escola de Engenharia, Universidade Presbiteriana Mackenzie, São Paulo 01302-907, SP, Brazil;2. Instituto Geofísico del Perú, IGP, Lima 3, Peru;3. Complejo Astronómico El Leoncito, CASLEO, San Juan J5402DSP, Argentina;1. Radio Observatorio de Jicamarca, Instituto Geofisico del Peru, Lima, Peru;2. Max Planck Institute for Solar Systems, Lindau, Germany;3. Deutsches Zentrum für Luft- und Raumfahrt, Institut für Physik der Atmosphäre, Oberpfaffenhofen, Germany;1. Radio Observatorio de Jicamarca, Instituto Geofísico del Perú, Lima, Peru;2. Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA;1. Ionospheric Systems Research, Noosaville, Australia;2. Solar-Terrestrial Environment Laboratory, Nagoya University Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan;1. Institute of Meteorology and Oceanography, PLA University of Science and Technology, Nanjing 211101, China;2. State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;3. State Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing 100190, China;1. Space Sciences Laboratory, University of California, Berkeley, CA 94720, USA;2. MIT Haystack Observatory, Westford, MA, USA;3. Institute of Ionosphere, National Academy of Sciences of Ukraine, Ministry of Education and Science of Ukraine, Kharkov, Ukraine;4. Jicamarca Radio Observatory, Instituto Geofisico del Peru, Lima, Peru;5. Leibniz Institute of Atmospheric Physics at the Rostock University, Germany;6. Electrical and Computer Engineering Department, Miami University, Oxford, OH, USA;7. Center for Geospace Studies SRI International, 333 Ravenswood Avenue, Menlo Park, USA;8. Applied Physics Laboratory, Johns Hopkins University, Laurel, MD, USA |
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| Abstract: | The storm period of 8–12 November 2004 offers an opportunity for insight into the phenomena of low-latitude ionospheric structure during geomagnetically disturbed times because of the strength of the disturbances, the timing of the storms, and the instrumentation that was operating during the interval. We will take advantage of these factors to model the ambient ionosphere and the plasma turbulence responsible for radio scintillation within it, using the AFRL low-latitude ambient/turbulent ionospheric model and the storm-time model features described in the companion paper Retterer, J.M., Kelley, M.C., 2009. Solar-wind drivers for low-latitude ionospheric models during geomagnetic storms. J. Atmos. Solar-Terr. Phys., this issue]. The model plasma densities show very good agreement with the densities measured by the Jicamarca ISR as well as with the total electron content (TEC) measured by the Boston College South American chain of GPS receivers. The detection by the radar of coherent returns from plasma turbulence match well the times of predicted ionospheric instability. The predicted geographic extent of the occurrence of equatorial plasma bubbles was matched by DMSP satellite observations and our forecasts of scintillation strength were validated with measurements of S4 at Ancon and Antofagasta by stations of the AFRL SCINDA network. |
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