Corotating Interaction Region · Parker Spiral
unseel.com · fast wind · slow wind · 27-day recurrence
Fast wind — km/s
Slow wind — km/s
Recurrence
Stage
Sun / coronal hole
Fast wind (700–800)
Slow wind (300–400)
Compression / shocks
Earth (1 AU)
Unseel.com · Corotating Interaction Regions: Where Fast Solar Wind Rams Slow Wind