hello and thanks to everyone who has replied to my question regarding contrails. Your advice has been very useful and I've been very busy following all your leads.
I'm now looking for information on what weather conditions are more likely to allow contrails to form/be visible so that I can look at the weather forecast at any point and plan whether filiming is going to be likely.
As I understand it contrails last longer in the sky when the weather is moist and rising, with the arrival of a storm in a day or two. When the weather is dry and sinking and fair weather is set to continue contrails are short and fade quicker. Does anyone have any thoughts / further info on this.
thanks