The effect of solar wind on several electrodynamic parameters, measured simultaneously by the European Incoherent Scatter (EISCAT) radars in Tromso (TRO, 66.6 degrees cgmLat) and on Svalbard (ESR, 75.4 degrees cgmLat), has been evaluated statistically. The main emphasis is on Joule heating rate Q(J), which has been estimated by taking into account the neutral wind. In addition, a generally used proxy Q(E), which is the Pedersen conductance times the electric field squared, has been calculated. The most important findings are as follows. (i) The decrease in Joule heating in the afternoon-evening sector due to winds reported by Aikio et al. (2012) requires southward interplanetary magnetic field (IMF) conditions and a sufficiently high solar wind electric field. The increase in the morning sector takes place for all IMF directions within a region where the upper E neutral wind has a large equatorward component and the F region plasma flow is directed eastward. (ii) At ESR, an afternoon hot spot of Joule heating centered typically at 14-15 magnetic local time (MLT) is observed during all IMF conditions. Enhanced Pedersen conductances within the hot spot region are observed only for the IMF B-z + B-y- conditions, and the corresponding convection electric field values within the hot spot are smaller than during the other IMF conditions. Hence, the hot spot represents a region of persistent magnetospheric electromagnetic energy input, and the median value is about 3 mW/m(2). (iii) For the southward IMF conditions, the MLT-integrated Q(E) for B-y- is twice the value for B-y(+) at TRO. This can plausibly be explained by the higher average solar wind electric field values for B-y(-).
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