Why do jet aircraft leave long exhaust streaks in the sky in europe but not in australia?

Answer 1

It's not exhaust, it's condensation trails. They are only left when the temperature outside the airplane is very close to that of the dewpoint temperature, and there is relatively high humidity. I've never been to Australia to see for myself, but if planes really don't leave condensation trails there, it must be because of weather that prevents the formation.

Answer 2

Those are not exhaust trails, they are vapor trails, or, actually, small clouds being formed in back of the jet due to the conditions of the dew point and moisture content at higher altitudes. Australia, being much closer to the equator, only has a chance of such conditions during it's winter. The US looks like a patch work quilt at times and at others has no
contrails at all, even though the heavy air traffic is about the same in each case.

Answer 3

Any plane will leave contrails anywhere in the world....it depends soley on 3 things
1) the amount of water vapour in the atmosphere
2) the ambient air temperature
3) the amount of water vapour in the engine exhaust

Even piston engined aircraft are capable of contrails...all dependent on the above...
The country's location really doesn't matter with respect to temperature....most jets operate above the tropopause where the temp is a constant -57C. What does vary is the amount of water vapour....and Austrailia is pretty dry!

Answer 4

that's while the air flows off the staggering and backside of the wing on the concepts if circumstances are real this reasons bigger drops off water merely like a cloud the wings make long clouds as they cut back interior the direction of the air On uncommon events, while the air is almost saturated with water vapour, air stream on the wing concepts of an airplane might reason adequate tension and temperature low priced rates to reason cloud streamers to sort. Condensation path, or Contrail, streamer of cloud at times stated at the back of an airplane flying in sparkling, chilly, humid air. It types upon condensation of the water vapour produced by potential of the combustion of gas interior the airplane engines. while the ambient relative humidity is extreme, the ensuing ice-crystal plume might final for various hours. the direction could be distorted by potential of the winds, and at times it spreads outwards to sort a layer of cirrus cloud.

Answer 5

it also depends upon the heights at which they are flying.
If the exhaust ha sparticulate matter the condensation takes place with particles as nucleus. Th ewind spped has role in thinning the exhaust fast enough

Answer 6

Those are vapor trails, and have to due with
the humidity level in the air.
Australia is currently experiencing a drought.
Nough said?

Answer 7

because they are over europe not australia

Answer 8

Why do toilets flush backwards in Australia?