What weather is associated with contrails?
In short, contrails are cloud-like streamers frequently observed to form behind aircraft flying in clear, cold, humid air. These condensation trails may form by either of two distinct processes.
Why do some contrails last so long?
Persistent contrails and contrails evolving and spreading into cirrus clouds. Here, the humidity of the atmosphere is high, and the contrail ice particles continue to grow by taking up water from the surrounding atmosphere. These contrails extend for large distances and may last for hours.
What determines the life of a contrail?
How long a contrail remains intact, depends on the humidity structure and winds of the upper troposphere. If the atmosphere is near saturation, the contrail may exist for sometime. On the other hand, if the atmosphere is dry then as the contrail mixes with the environment it dissipates.
Is it possible to predict the contrail of a plane?
It’s also very localized. A plane might leave a trail in one region, and another plane a mile away might not leave a trail. NASA have put together a contrail forecast page that you can use to roughly predict when contrails are likely for a given region and a given altitude.
How long do contrails last on an airplane?
When aircraft do leave contrails behind, some contrails last hours and other contrails last mere seconds or minutes . Why do some airplanes leave contrails and some don’t?
Why do some airplanes leave contrails and others don’t?
These black plumes are primarily soot from partially burned fuel, and are distinct from contrails. For older engine designs in particular, to keep the internal engine components cool during takeoff and climb, excess fuel is used during the takeoff phase of flight, leading to an overly rich fuel mixture.
Can a plane leave a trail in one region?
A plane might leave a trail in one region, and another plane a mile away might not leave a trail. NASA have put together a contrail forecast page that you can use to roughly predict when contrails are likely for a given region and a given altitude. The following image should be the latest forecast