Strange markings on today's satellite pictures

Mobhi1

Does anyone know what's causing the unusual marks on today's satellite pictures? It's as if someone had scrawled across them with a pen.

http://www.sat24.com/Region.aspx?country=gb&sat=ir&type=loop

http://www.sat24.com/Region.aspx?country=gb&sat=vis&type=loop

http://www.met.ie/sat/iuk-ir.asp

http://www.met.ie/sat/iuk-v.asp

maquiladora

http://www.sat24.com/image.ashx?country=gb&type=loop&sat=

First thought it was something to do with air traffic.

I dunno, doesn't look like some type of artifact cause on the loop above you can see how the 'lines' space out and dissolve a little as they pass over the Irish Sea.


I dunno though, odd looking.

Danno

Air traffic, the high pressure allows the formations to persist.

Mr Benevolent

It could be two things - the actual contrails themselves, or the shadows of the contrails on the clouds below. More probably the latter.

ian_m

Does anyone have a screen grab?