2nd December

Wind speed and temperature at the ACE spacecraft began to climb in the
early part of the period, while density fell. Wind speed reached 640
km/s at 02/0255 UTC. Phi was mostly negative through the period. Bz
dipped as low as -10 nT at 01/2143 UTC then gradually returned to
neutral conditions as Bt declined. Wind speed dropped after 02/0300
UTC, ending near 500 km/s. The observations were consistent with the
presence of a high speed solar wind stream, although the observed
polarity was opposite of the hole that was expected, suggesting the
southern polar coronal hole is connected instead.

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