2011 SuperDARN Workshop       

Map_Potential 2.0?

E.D.P. Cousins and S.G. Shepherd
Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire, USA

abstract. abstract. Global ionospheric convection maps calculated from line-of-sight velocities using the Map_Potential procedure are one of the most widely used SuperDARN data products. We will show that the convection maps can be improved (to better match observed data) by using the International Geomagnetic Reference Field (IGRF) to calculate electric field values from velocities and by using the new SuperDARN dynamical model of Cousins and Shepherd [2010] to constrain the pattern where no data is available. These changes can produce >10% change in the derived convection pattern (as measured by the cross-polar cap potential difference) in time periods with moderate to low data coverage.

Sakaguchi KaoriNICT Japan