Proceedings with Extended Abstracts (single PDF file) - Radio ...

Figure 5: Mean radial velocities and zonal momentum flux obtained with interleavedoblique beams (HPFW=6.6 ◦ ) directed towards NW and SE at 17.2 ◦ zenith angle .Doppler beam swinging measurements are possible at various off-zenith directionswith various beam widths. Two beam widths of 6.6 ◦ and 13.8 ◦ (Half-Power-Full-Width,one way) can be applied. The radar beam can be steered into the vertical direction andtowards 7.2 ◦ and 17.2 ◦ off-zenith at 8 azimuthal directions with preference into the directionsNE, SW, NW, and SE with the lowest background noise levels. The high flexibilityof Doppler beam swinging experiments allows Doppler wind measurements with differentoff-zenith beams, estimation of momentum fluxes and of turbulent spectral widths usingdifferent techniques. Mean radial velocities and fluxes of horizontal momentum obtainedby interleaved beam swinging from data point to data point in the NW-SE plane areshown in Fig. 5. The application of the nested beams technique (VanZandt et al., 2002),Figure 6: Electron densities derived from the Differential Absorbtion Experiment andthe Differential Phase Experiment. Interleaved observations with ordinary (O mode) andextra-ordinary (X mode) polarization.388