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I HAVE FOUND IT DIFFICULT TO CORRELATE ALTITUDE, TEMPERATURE, AND HUMIDITY LEVELS TO PERSISTING OR DISSIPATING CONTRAILS. IT SEEMS PRETTY RANDOM THAT WAY...WHICH LEADS ONE TO BELIEVE THERE IS A DIFFERENCE IN THE EXHAUST?
originally posted by: Zaphod58
a reply to: kittywrangler
Not necessarily, no. You can have enough humidity to leave a contrail, but no clouds. That's when you get contrails that dissipate quickly. BUT IN REAL LIFE THEY PERSIST AND EXPAND. There's enough humidity that the exhaust from the engine pushes the humidity levels high enough to leave a contrail, but not high enough that it will linger. Meaning there's not enough humidity to form clouds at that particular point.
Because the humidity levels weren't high enough for the contrails to persist, because they were forming from hotter exhaust, and not the air that was going around the engine. There were still persistent contrails, but they weren't as common then, because conditions had to be just right. I'LL THINK ABOUT THIS, BUT THE EQUATION ALWAYS COMES DOWN TO: TEMPERATURE, PARTICULATE, AND ATMOSPHERIC MOISTURE. THAT'S IT, RIGHT?
It happens all the time actually. Contrails over my area usually form in a very narrow range of altitudes. A couple thousand feet is the difference between short lived contrail, and no contrail at all. Some days, I see almost no contrails all day. Other days I see a lot of them. It's not temperature, it's humidity levels. To get a persistent contrail, humidity levels have to go over 100%.
originally posted by: ChristianSupremacist
a reply to: Zaphod58
So what do you say about GeoEngineering, is that not a thing either?
Thailand's Royal Rainmaking Project
en.wikipedia.org...
Chemtrails = GeoEngineering
originally posted by: kittywrangler
I HAVE FOUND IT DIFFICULT TO CORRELATE ALTITUDE, TEMPERATURE, AND HUMIDITY LEVELS TO PERSISTING OR DISSIPATING CONTRAILS. IT SEEMS PRETTY RANDOM THAT WAY...WHICH LEADS ONE TO BELIEVE THERE IS A DIFFERENCE IN THE EXHAUST?
originally posted by: Zaphod58
a reply to: kittywrangler
Not necessarily, no. You can have enough humidity to leave a contrail, but no clouds. That's when you get contrails that dissipate quickly. BUT IN REAL LIFE THEY PERSIST AND EXPAND. There's enough humidity that the exhaust from the engine pushes the humidity levels high enough to leave a contrail, but not high enough that it will linger. Meaning there's not enough humidity to form clouds at that particular point.
Because the humidity levels weren't high enough for the contrails to persist, because they were forming from hotter exhaust, and not the air that was going around the engine. There were still persistent contrails, but they weren't as common then, because conditions had to be just right. I'LL THINK ABOUT THIS, BUT THE EQUATION ALWAYS COMES DOWN TO: TEMPERATURE, PARTICULATE, AND ATMOSPHERIC MOISTURE. THAT'S IT, RIGHT?
It happens all the time actually. Contrails over my area usually form in a very narrow range of altitudes. A couple thousand feet is the difference between short lived contrail, and no contrail at all. Some days, I see almost no contrails all day. Other days I see a lot of them. It's not temperature, it's humidity levels. To get a persistent contrail, humidity levels have to go over 100%.
originally posted by: Zaphod58
a reply to: kittywrangler
That's part of what I've been saying all along. Contrails are pretty random, but the exhaust is also different. In the 80s, the air all went through the combustion portion of the engine, and was pushed out the back. Now, engines only put a portion of the exhaust through the combustion portion of the engine, and most of it around the engine.
originally posted by: Zaphod58
a reply to: kittywrangler
Because the humidity levels weren't high enough for the contrails to persist, because they were forming from hotter exhaust, and not the air that was going around the engine. There were still persistent contrails, but they weren't as common then, because conditions had to be just right. I'LL THINK ABOUT THIS, BUT THE EQUATION ALWAYS COMES DOWN TO: TEMPERATURE, PARTICULATE, AND ATMOSPHERIC MOISTURE. THAT'S IT, RIGHT?
originally posted by: network dude
originally posted by: kittywrangler
I HAVE FOUND IT DIFFICULT TO CORRELATE ALTITUDE, TEMPERATURE, AND HUMIDITY LEVELS TO PERSISTING OR DISSIPATING CONTRAILS. IT SEEMS PRETTY RANDOM THAT WAY...WHICH LEADS ONE TO BELIEVE THERE IS A DIFFERENCE IN THE EXHAUST?
originally posted by: Zaphod58
a reply to: kittywrangler
Not necessarily, no. You can have enough humidity to leave a contrail, but no clouds. That's when you get contrails that dissipate quickly. BUT IN REAL LIFE THEY PERSIST AND EXPAND. There's enough humidity that the exhaust from the engine pushes the humidity levels high enough to leave a contrail, but not high enough that it will linger. Meaning there's not enough humidity to form clouds at that particular point.
Because the humidity levels weren't high enough for the contrails to persist, because they were forming from hotter exhaust, and not the air that was going around the engine. There were still persistent contrails, but they weren't as common then, because conditions had to be just right. I'LL THINK ABOUT THIS, BUT THE EQUATION ALWAYS COMES DOWN TO: TEMPERATURE, PARTICULATE, AND ATMOSPHERIC MOISTURE. THAT'S IT, RIGHT?
It happens all the time actually. Contrails over my area usually form in a very narrow range of altitudes. A couple thousand feet is the difference between short lived contrail, and no contrail at all. Some days, I see almost no contrails all day. Other days I see a lot of them. It's not temperature, it's humidity levels. To get a persistent contrail, humidity levels have to go over 100%.
do you generally see trails at 15.000 feet, and why not?
originally posted by: kittywrangler
originally posted by: network dude
originally posted by: kittywrangler
I HAVE FOUND IT DIFFICULT TO CORRELATE ALTITUDE, TEMPERATURE, AND HUMIDITY LEVELS TO PERSISTING OR DISSIPATING CONTRAILS. IT SEEMS PRETTY RANDOM THAT WAY...WHICH LEADS ONE TO BELIEVE THERE IS A DIFFERENCE IN THE EXHAUST?
originally posted by: Zaphod58
a reply to: kittywrangler
Not necessarily, no. You can have enough humidity to leave a contrail, but no clouds. That's when you get contrails that dissipate quickly. BUT IN REAL LIFE THEY PERSIST AND EXPAND. There's enough humidity that the exhaust from the engine pushes the humidity levels high enough to leave a contrail, but not high enough that it will linger. Meaning there's not enough humidity to form clouds at that particular point.
Because the humidity levels weren't high enough for the contrails to persist, because they were forming from hotter exhaust, and not the air that was going around the engine. There were still persistent contrails, but they weren't as common then, because conditions had to be just right. I'LL THINK ABOUT THIS, BUT THE EQUATION ALWAYS COMES DOWN TO: TEMPERATURE, PARTICULATE, AND ATMOSPHERIC MOISTURE. THAT'S IT, RIGHT?
It happens all the time actually. Contrails over my area usually form in a very narrow range of altitudes. A couple thousand feet is the difference between short lived contrail, and no contrail at all. Some days, I see almost no contrails all day. Other days I see a lot of them. It's not temperature, it's humidity levels. To get a persistent contrail, humidity levels have to go over 100%.
do you generally see trails at 15.000 feet, and why not?
i'll play...lower altitude means higher temperature, more than adequate particulate, and generally a higher humidity. i miss the point tho...
originally posted by: Zaphod58
a reply to: kittywrangler
In real life, they do both. We had a weather system move through the other day. The day started sunny, without a cloud in the sky. We started with some contrails that dissipated quickly, which gradually changed into contrails that persisted all afternoon. By that night it was cloudy, and the next morning it started to rain, and didn't stop until after lunch the day after it started.
Now, according to the internet, those two events are related. The contrails caused the rain. In reality, there was a frontal system moving into the area, pushing a lot of moisture ahead of it as it displaced the air moving in. As it got closer, the humidity increased and contrails started to linger because of it. It eventually got high enough that the started to spread into a cloud deck, and clouds started to form.
originally posted by: Zaphod58
a reply to: kittywrangler
Those “chemtrails” that spread out were contrails doing just that. Contrails are just cirrus clouds.