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Structure in the seasonal variations of Es at southern latitudes
Institution:1. German Research Centre for Geosciences GFZ, Potsdam, Germany;2. Technische Universität Berlin, Germany;1. Centro de Instrumentación Científica, Universidad Adventista de Chile, Chillán, Chile;2. Centro Interuniversitario de Física de La Alta Atmósfera, Chile;3. State Key Laboratory of Space Weather, NSSC/CAS, Beijing, China;4. National Institute for Space Research-INPE, São José dos Campos, SP, Brazil;5. Universidad del Bío-Bío, Concepción, Chile
Abstract:The diurnal variations of the seasonal characteristics of sporadic-E occurrence have been studied by analyzing a large data set of ionosonde parameters for two southern hemisphere stations. The seasonal patterns are found to display anomalous short-term variations apparently not associated with solar control or the effects of dynamic meteorology.
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