author = "Paula, Eurico Rodrigues de and Jonah, O. F.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Low-latitude scintillation weakening during sudden stratospheric 
                         warming events",
              journal = "Journal of Geophysical Research",
                 year = "2015",
               volume = "120",
             keywords = "Ionospheric scintillation, lunar tide effects over scintillation, 
                         vertical plasma drift, thermospheric wind.",
             abstract = "Global Positioning System (GPS) L1-frequency (1.575 GHz) amplitude 
                         scintillations at S{\~a}o Jos{\'e} dos Campos (23.1S, 45.8W, 
                         dip latitude 17.3S), located under the southern crest of the 
                         equatorial ionization anomaly, are analyzed during the Northern 
                         Hemisphere winter sudden stratospheric warming (SSW) events of 
                         2001/2002, 2002/2003, and 2012/2013. The events occurred during a 
                         period when moderate to strong scintillations are normally 
                         observed in the Brazilian longitude sector. The selected SSW 
                         events were of moderate and major categories and under low Kp 
                         conditions. The most important result of the current study is the 
                         long-lasting (many weeks) weakening of scintillation amplitudes at 
                         this low-latitude station, compared to their pre-SSW periods. 
                         Ionosonde-derived evening vertical plasma drifts and meridional 
                         neutral wind effects inferred from total electron content 
                         measurements are consistent with the observed weakening of GPS 
                         scintillations during these SSW events. This work provides strong 
                         evidence of SSW effects on ionospheric scintillations and the 
                         potential consequences of such SSW events on Global Navigation 
                         Satellite System-based applications.",
                  doi = "doi10.1002/2014JA020731",
                  url = "http://dx.doi.org/doi10.1002/2014JA020731",
                 issn = "0148-0227 and 2156-2202",
                label = "self-archiving-INPE-MCTI-GOV-BR",
             language = "en",
        urlaccessdate = "25 jan. 2021"