- Conference date: 17-31 June 2002
- Location: Pisa (Italy)
How has the high‐latitude solar wind velocity changed over the solar activity cycle? We analyzed interplanetary scintillation data during the years 1985–2001 (excluding the few years around solar maximum) and obtained the following results: (1) the solar wind in the polar region did not change its speed even during the phases of rising and declining solar activity, (2) the N‐S asymmetry of the high‐latitude solar wind speed is a stable structure from 1987 to 1998, (3) the latitudinal velocity gradient at high latitude becomes steeper with increasing solar activity.
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