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@Article{ResendeDePiMoBaFiSi:2019:DeNeIo,
               author = "Resende, Laysa Cristina Araujo and Denardin, Clezio Marcos and 
                         Pican{\c{c}}o, Giorgio Arlan da Silva and Moro, Juliano and 
                         Barros, Diego and Figueiredo, Cosme Alexandre Oliveira Barros and 
                         Silva, R{\'e}gia Pereira da",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "On developing a new ionospheric plasma index for the Brazilian 
                         equatorial F region irregularities",
              journal = "Annales Geophysicae Discussions",
                 year = "2019",
               volume = "38",
               number = "1",
                pages = "1--20",
             abstract = "F region vertical drifts (Vz) are the result of the interaction 
                         between the ionospheric plasma with the zonal electric field and 
                         the Earth's magnetic field. Abrupt variations in Vz are strongly 
                         associated with the occurrence of plasma irregularities (spread-F) 
                         during the nighttime periods. These irregularities are 
                         manifestations of the space weather in the ionosphere environment 
                         without necessarily require a solar burst. In this context, the 
                         Brazilian Space Weather Study and Monitoring Program (Embrace) of 
                         the National Institute for Space Research (INPE) has been 
                         developing different indexes to analyze these ionospheric 
                         irregularities in the Brazilian sector. Therefore, the main 
                         purpose of this work is to produce a new ionospheric scale based 
                         on the analysis of the ionospheric plasma drift velocity, named 
                         AV. It is based in the maximum value of Vz (Vzp), which in turn is 
                         calculated through its relationship with the virtual height 
                         parameter, hF, measured by the Digisonde Portable Sounder (DPS4D) 
                         installed in S{\~a}o Lu{\'{\i}}s (2S, 44 O, dip: -2,3). This 
                         index quantifies the time relation between the Vz peak and the 
                         irregularity observed in the ionogramas. Thus, in this study, we 
                         analyzed 8 years of data, between 2009 and 2015, divided by season 
                         in order to construct a standardized scale. The results show there 
                         is a delay of at least 15 minutes between Vzp observation and the 
                         irregularity occurrence. Finally, we believe that this proposed 
                         index allow evaluating the impacts of ionospheric phenomena in the 
                         Space Weather environment recently.",
                  doi = "10.5194/angeo-2019-42",
                  url = "http://dx.doi.org/10.5194/angeo-2019-42",
                 issn = "0992-7689",
                label = "lattes: 3865836007446677 3 ResendeDePiMoBaFiSi:2019:DeNeIo",
             language = "en",
           targetfile = "angeo-2019-42.pdf",
                  url = "https://www.ann-geophys-discuss.net/angeo-2019-42/",
        urlaccessdate = "15 jan. 2021"
}


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