[Rokke]

"Then why does the multiple picture overlay show it making far more progress sideways, to the south, than forward, to the east?"

It doesn't. Can you tell from the picture what the course of the airplane is? The orange line shows it moving along a consistant course. Do you know what heading that course is?

[TigersEye]

That's a nice cartoon picture you have there but you are going to make TXnMA mad for not giving him credit.

I don't know why he's not mad at contrailscience guy for obviously ripping off his work.