January 20th, 2013
This picture of ship tracks off North America isn't at all what I thought from the title when it popped up in my feed reader. They're not 'tracks' as in a bow wave1, but the trails of clouds that form because of the trail of aerosols – be it exhaust fumes or just desert dust – that a ship leaves behind it.
There's also a rather nice animation showing almost 12 hours-worth of the tracks' movement.
- Which was what I'd assumed the picture would show. ↩