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@InProceedings{ArrasMosResWicKep:2019:InSoCy,
               author = "Arras, C. and Mosna, Z. and Resende, Laysa Cristina Ara{\'u}jo 
                         and Wickert, J. and Kepkar, A.",
          affiliation = "{GFZ Potsdam} and Institute of Atmospheric Physics, Aeronomy, 
                         Prague, Czech Republic and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {GFZ Potsdam} and {GFZ Potsdam}",
                title = "The Influence of the Solar Cycle on Global Sporadic E Parameters",
                 year = "2019",
         organization = "IUGG General Assembly, 27.",
             abstract = "GPS radio occultation measurements are used to observe the 
                         occurrence and the intensity of sporadic E layers on a global 
                         scale. We analysed data acquired by the FORMOSAT-3/COSMIC 
                         satellites. Since their launch in April 2006, the satellites 
                         collected about 6 million of globally distributed radio 
                         occultation profiles. For our study, we use ionosonde data at 
                         midlatitude and low latitude stations as well as Signal-to-Noise 
                         Ratio (SNR) GPS L1 radio occultation profiles. The SNR is 
                         sensitive to vertical changes in the electron density which is 
                         reflected in large fluctuations in the according altitude range of 
                         the profile. Therefore, vertically thin ionospheric phenomena like 
                         sporadic E layers can easily be identified using numerical 
                         filtering techniques. Currently, the radio occultation time series 
                         comprises 12 years covering approximately one solar cycle. In this 
                         study, we will focus on variations in sporadic E occurrence and 
                         intensity in line with the solar cycle. We will show global 
                         results, which indicate significant differences between different 
                         latitudes. Generally, we observe an indirect correlation between 
                         sporadic E and the solar cycle which is most clearly visible in 
                         the magnetic equator region.",
  conference-location = "Montr{\'e}al, Canada",
      conference-year = "08-18 July",
        urlaccessdate = "02 dez. 2020"
}


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