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Storm-time Disturbed Electric Field Influence in the Strong Sporadic E-layers Occurrence over Boa Vista, a low latitude Brazilian Region
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  • Laysa Cristina Araujo Resende,
  • Shi Jiankui,
  • Clezio Marcos Denardini,
  • Paulo Alexandre Bronzato Nogueira,
  • Inez S. Batista,
  • Christina Arras,
  • Vania Fatima Andrioli,
  • Juliano Moro,
  • Ligia Alves Da Silva,
  • Alexander Jose Carrasco,
  • Paulo França Barbosa Neto,
  • Chi Wang,
  • Liu Zhengkuan
Laysa Cristina Araujo Resende
National Institute for Space Research/China-Brazil Joint Laboratory of Space Weather

Corresponding Author:[email protected]

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Shi Jiankui
State Key Laboratory of Space Weather, China Academy of Science, CAS
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Clezio Marcos Denardini
National Institute for Space Research
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Paulo Alexandre Bronzato Nogueira
Federal Institute of Education, Science and Technology of Sao Paulo
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Inez S. Batista
National Institute for Space Research
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Christina Arras
GFZ Potsdam
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Vania Fatima Andrioli
National Institute for Space Research - INPE
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Juliano Moro
Southern Regional Space Research Center - CRS/COCRE/INPE
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Ligia Alves Da Silva
National Institute for Space Research (INPE) / China-Brazil Joint Laboratory for Space Weather
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Alexander Jose Carrasco
Universidad de los Andes
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Paulo França Barbosa Neto
National Institute for Space Research
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Chi Wang
National Space Science Center, Chinese Academy of Sciences
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Liu Zhengkuan
State Key Laboratory of Space Weather, National Space Science Center (NSSC), Chinese Academy of Sciences
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The formation of strong sporadic E-layers (Es) is frequently observed during the recovery phase of the magnetic storms over Boa Vista (BV, 2.8°N, 60.7°W), a low latitude region over the Brazilian sector. To provide some explanation for this behavior, we investigated in details the ionospheric response to the disturbed electric fields in these atypical Es layers appearance during the magnetic storm of 21-22 January 2016. The analysis was based on F region and Es layers ionospheric parameters obtained from digisonde, as well as on the Total Electron Content (TEC) obtained from Global Navigation SatelliteSystem (GNSS). Furthermore, a theoretical model for the E region named MIRE is used to simulate the Es layers development. Such simulation takes into account the E region winds and electric fields. The results show that the storm time electric field is enough to drive the strong Es layers development. Moreover, it is seen that the intensification of the Es layers is related to the inhibition of the F-region pre-reversal enhancement of the vertical drift due to a westward electric field during the disturbance dynamo effect. Finally, the combined results from the model and observational data seemed to contribute significantly to advance our understanding of the role of the electric fields in the Es layer formation.