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Comparison of EISCAT IPS radial and meridional solar wind velocity
measurements with measurements made by Ulysses.
P.J. Moran, A.R. Breen, A. Canals, R.A. Fallows, P.J.S. Williams, J.
Markkanen
Observations of interplanetary scintillation (IPS) made using EISCAT allow
accurate solar wind velocity measurements to be made at all heliographic
latitudes, whilst extended observations enable the large-scale direction of
the solar wind flow to be determined. The IPS results show the high
latitude wind to be similar in velocity to measurements made by ULYSSES and
the data also regularly show there to be a small but significant non-radial
component of around 1 or 2 degrees, generally in the meridional direction
from the pole to the equator. A comparison of both velocity measurements
along a streamline, and large scale non-radial flow are made between the
EISCAT and ULYSSES datasets.
(Paper presented by Prof. P.J.S. Williams, Cardiff)
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