reply to post by luxordelphi
Originally posted by luxordelphi
From WWII we learned that there are a number of conditions that need to be met in order for contrails to persist for 15 minutes. Hard to believe?
Watch:
1. Humidity has to be just so.
2. Altitude has to be just so.
3. Temperature has to be just so.
4. Particle saturation has to be super.
5. A cloud corridor needs to exist.
6. A weather front needs to exist.
7. Exhaust heat needs to be just so.
8. Latitude must be considered.
So you accuse others of making stuff up, then you go and put forth this drivel. More face palm logic.
The main things on your list are numbers 1 and 3. However, many of the other points are irrelevant. For example, altitude is not a direct factor.
It is just that the conditions of temperature and humidity vary with altitude. It is possible to get contrails at ground level if it is sufficiently
cold, although this could only occur in very cold regions such as Antarctica. You have also shown that you don't properly understand super
saturation (something I've previously tried to explain to you, but obviously not well enough). Super saturated air is merely a measure of relative
humidity, not a separate requirement and doesn't involve 'particles'. Your numbers 5 and 6 are not requirements at all. It appears you are just
making stuff up. A weather front is merely a mechanism which can provide the necessary conditions of temperature and humidity, but it certainly is
not required. Exhaust heat is not required either, as aerodynamic contrails can form and persist due to localised increases in relative humidity over
the wings. The exhaust can provide extra moisture though. Lastly, latitude is not a requirement, even if latitude can influence the temperature and
humidity levels (making it an influencing factor, but not a requirement).
So of your list of required conditions, you got 2 out of 8 right as
actual requirements. Sorry, but that's a fail. Yet I'm sure you still
feel qualified to announce that all the science is "bunk" or "made up overnight". I guess it's a lot easier to dismiss something as false when
you don't actually understand it.
Originally posted by luxordelphi
'Pockets of humidity', creating a morse code-like appearance, are an example of making stuff up to fit exceptions in contrail formation. Further,
no one has taken readings on these 'pockets' so it's all just assumed as well.
Yet again, more face-palm logic. I have explained to you in the past that the atmosphere is not uniform, and it does not follow a simple rule of less
humidity as you go higher. Yet, we don't need to take "readings" of 'pockets' to know that they exist. You just need a little observation and a
bit of common sense. A cloud is a localised 'pocket' of condensed water droplets or ice crystals (ie a pocket of increased relative humidity).
Sometimes, you can get lots of small 'pockets' of cloud, such as cumulus cloud, showing that the atmosphere is not uniform, but contains variable
'pockets' with different properties. Denying that pockets of different humidity exist is tantamount to denying that clouds exist in anything other
than vast uniform sheets. Just because you don't know something, doesn't mean you can just assume that it is an assumption. That would be "making
stuff up".
Originally posted by luxordelphi
If you have this data for the OP photos and can prove that it's not virtual propaganda, I'll entertain you. Otherwise - you got nothing.
lol
Since the OP hasn't stated where they are yet (at least not that I recall), we can only speculate. However, if they're in the UK, I have provided
the data showing that conditions were conducive to contrail formation (at least they were on the 17th). Yes, even in Summer, it can get awfully cold
at 35,000 feet. So while you claim others have "nothing", at least they're not lying or showing such a poor grasp on the topic and misleading
others.
