14 February

Solar wind parameters, as observed at the ACE spacecraft, reflected
nominal background conditions. Solar wind speeds steadily dropped
from beginning speeds near 375 km/s to end the period near 325 km/s. IMF
Bt was steady varying between 4 to 7 nT while the Bz component remained
predominately positive at 0 to 6 nT. Phi angle was in a negative
(towards) orientation through 14/0453 UTC where a transition to a
positive (away) orientation occurred.

Leave a Reply