Condensation Trails over France – December 1st, 2008
Condensation trails create criss-cross patterns over western France, near Bordeaux, Limoges and La Rochelle, in this full resolution image.
Condensation trails, also called contrails or vapour trails, are visible trails of condensed water vapour made by the exhaust of aircraft engines.
As the hot exhaust gases cool in the surrounding air they may precipitate a cloud of microscopic water droplets. If the air is cold enough, this trail will comprise tiny ice crystals.
In addition to the white lines of the condensation trails, we can also see snowfall over the Massif Central (right) and in some valleys closer to the coast.
By the coast, we can see sediments in the Gironde Estuary, where the mouths of the Garonne and Dordogne rivers merge.