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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Ann. Geophys., 26, 1517-1523, 2008
https://doi.org/10.5194/angeo-26-1517-2008
© Author(s) 2008. This work is distributed under
the Creative Commons Attribution 3.0 License.
 
11 Jun 2008
Effects of mixed scatter on SuperDARN convection maps
P. V. Ponomarenko, C. L. Waters, and F. W. Menk University of Newcastle, Callaghan, NSW, Australia
Abstract. The SuperDARN radars map high-latitude ionospheric plasma drift velocities by measuring the Doppler frequency shift of HF signals scattered by decameter electron density irregularities. In many cases the ionospheric returns are contaminated by strong scatter from the ground or sea surface. In this paper we develop and test a two-component fitting algorithm to separate ionospheric and surface scatter components. Application of the technique to sample data reveals that mixed scatter may considerably distort ionospheric convection patterns derived from the radar data and can cause underestimation of the plasma drift velocity.

Citation: Ponomarenko, P. V., Waters, C. L., and Menk, F. W.: Effects of mixed scatter on SuperDARN convection maps, Ann. Geophys., 26, 1517-1523, https://doi.org/10.5194/angeo-26-1517-2008, 2008.
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