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Low latitude storm time ionospheric electrodynamics
Institution:1. Space Science and Development Research, Ethiopian Space Science and Technology Institute, Addis Ababa, Ethiopia;2. Washera Geospace and Radar Science Laboratory, Physics Department, Bahir Dar University, Bahir Dar, Ethiopia;3. Climate and Space Sciences and Engineering, University of Michigan, USA;1. Department of Physics, Aksum University, Aksum, Ethiopia;2. Washera Geospace and Radar Science Laboratory, Bahir Dar University, Bahir Dar, Ethiopia;1. State Key Laboratory of Astronautic Dynamics, Xi''an 710043, China;2. Institutes of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, China;1. Instituto Tecnológico de Aeronáutica (ITA), Divisão de Ciências Fundamentais, São José dos Campos, SP, Brazil;2. Instituto Federal de Educação, Ciência e Tecnologia de São Paulo (IFSP), Campus Jacareí, SP, Brazil;3. Universidade do Vale do Paraíba (UNIVAP), Laboratório de Física e Astronomia, São José dos Campos, SP, Brazil;4. Instituto Nacional de Pesquisas Espaciais (INPE), São José dos Campos, SP, Brazil;5. Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata (UNLP), La Plata, Argentina;6. National Atmospheric Research Laboratory (NARL), Gadanki, India
Abstract:The response of the low latitude ionosphere to high latitude convection has long been the subject of considerable interest. Radar, ionosonde, magnetometer, and satellite measurements have been extensively used for studying the time-dependent characteristics of low-latitude disturbance electric fields and currents, and their coupling to the high latitude convection. Several global convection models have been used to explore the relationship between inner magnetospheric processes, and mid- and low-latitude ionospheric electrodynamic effects during geomagnetically active times. Recently, significant progress has been made in quantifying the average storm time-dependent responses of low latitude electrodynamic plasma drifts and currents to changes in the high latitude convection, and in the validation of global convection and ionospheric disturbance models. However, there are several fundamental questions dealing mostly with the large variability of the disturbance electric fields. In this review, we examine the latest progress in these studies and discuss a number of outstanding problems.
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