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Q: Why are there more short-lived contrails than persistent contrails?
A: For a particular geographical location, it may seem that there are more of one type of contrail than another. Actually, the type and number seems to depend on the amount of moisture and temperature in the atmosphere where the plane is flying. If the area is fairly dry, then more short-lived contrails might be observed. If there is more moisture, such as along the east coast of the United States, there might be more persistent contrails observed. To look at observations from other areas, you might like to visit the GLOBE website and click on the Data Access button.
Originally posted by eaglewingz
Short-lived contrails are very common from conventional aircraft. Here's a pic of a couple of short trails, and a page of some more.
[edit on 8/13/2006 by eaglewingz]
Originally posted by toasted
I dunno about those
some maybe , some no.
but I've seen them too.
I've seen them hang and spread,
they weren't NORMAL !
so , something other than normal
contrails , are lingering and spreading.
now just exactly ,WHAT, is spreading ,
remains to be known by the people.
toasted
Originally posted by Zeta Home
How contrails REALY look like?
Draw it if you don`t have a pics
Originally posted by Essan
Originally posted by Zeta Home
How contrails REALY look like?
Draw it if you don`t have a pics
Normal contrails look like this:-
[edit on 9-9-2006 by Essan]
Originally posted by snoopyuk
one large trail recently measured was 12.5 miles wide !!!
Originally posted by Essan
Originally posted by snoopyuk
one large trail recently measured was 12.5 miles wide !!!
Like all clouds (which is effectively what all contrails are) their size and how long they linger is all dependent on atmospheric conditions.
This explains it all : www.royal-met-soc.org.uk...