@Article{SahaiTakFagCleTei:1992:ObThNe,
               author = "Sahai, Yogeshwar and Takahashi, Hisao and Fagundes, Paulo Roberto 
                         and Clemesha, Barclay Robert and Teixeira, Nelson Rodrigues",
                title = "Observations of thermospheric neutral winds at 23 deg.S",
              journal = "Planetary and Space Science",
                 year = "1992",
               volume = "40",
               number = "6",
                pages = "767--773",
             keywords = "AERONOMIA, TERMOSFERA, INTERFFEROMETRO FABRY-PEROT, LUMINESCENCIA, 
                         eMISSOES oi 630.0.",
             abstract = "Observations of night-time thermospheric neutral wind velocities 
                         from measurements of Doppler shifts of the 0I 630.0 nm airglow 
                         emission line, using a Fabry-Perot interferometer, have been 
                         carried out from 23 degree S geographic latitude in the Brazilian 
                         setor during We period March 1988-December 1989. The observing 
                         location is situated inside both the equatorial ionospheric and 
                         South Atlantic magnetic anomalies. In this paper we present and 
                         discuss salient features of the average nocturnal variations of 
                         the thermospheric meridional and zonal wind velocities during 
                         autumn, winter, spring and slimmer seasons. The results are 
                         compared with the wind velocities predicted by the HWM-87 and 
                         HWM-90 models. The observed and predicted meridional and zonal 
                         wind velocities from the HWM-87 and HWM-90 models show a 
                         reasonable agreement in terms of tendencies of nocturnal 
                         variations during different seasons. However, some discrepancies 
                         arc observed with regard to the magnitudes and detailed variation 
                         in the nocturnal patterns. The observed zonal winds are stronger 
                         than the meridional winds. Also the summer zonal winds are 
                         stronger than in winter, contrary to the HWM-87 model predictions. 
                         The observed thermospherie wind velocities, presented here, are 
                         comparable with those report from other low latitude stations.",
                 issn = "0032-0633",
                label = "8760",
           targetfile = "7469.pdf",
        urlaccessdate = "14 fev. 2025"
}