Abstract
Electron-density irregularities have been observed in the day-time equatorial ionosphere using probe experiments carried in the payloads of two rockets launched near Lima, Peru, during Project Condor, 1983. Simultaneous observations of the mesosphere and upper E-region were obtained using the radar at Jicamarca. A layer of mesospheric irregularities is identified as originating in neutral atmosphere turbulence. In the electrojet the rocket data show the regions of Type 2 irregularities (between 90 and 105 km) and Type 1 irregularities (between 103 and 108 km), differentiated by the slopes of their respective spectra. The irregularities of the upper E-region seen in the rocket data are reconciled with the radar data by postulating a strong aspect sensitivity.
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