Lessons learned observing Farley Buneman waves
D. L. Hysell1, G. Michhue1, M. F. Larsen2, R. Pfaff3, and J. L. Chau4
at low, middle, and high latitudes
- Earth and Atmospheric Sciences, Cornell University, Ithaca, NY, USA
- Physics and Astronomy, Clemson University, Clemson, SC, USA
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Radio Observatorio de Jicamarca, Instituto Geofisico del Peru, Lima, Peru
Farley Buneman waves have been observed in the equatorial, midlatitude, and auroral E regions using imaging coherent scatter radars. The interpretation of the observations from these latitude regimes is obfuscated by large-scale waves, sporadic E layer properties, and wave heating, respectively (to name but a few potential complications). A unified picture regarding the interpretation of the Doppler spectrum of Farley Buneman waves is emerging from the combined radar observations, viewed in the light of recent rocket experiments and numerical simulations. In particular, the Doppler shift and spectral width appear to be predictable and perhaps invertible functions of the convection electric field. A ground-based diagnostic of fine structure in the auroral convection pattern based on Farley Buneman wave observations should be realizable.