Aaron,
I don't think you fully understand the concept of thermals, please read some more material and understand this everyday unseen force in modern life.
As for your observations, they are yours, I am not debating what you saw.
Any area where the natural forest has been removed, will generally create a thermal. This rising air will take with it sea level moisture and push it all the way up to 60,000ft sometimes. So you need to understand that the airspace above the city does in fact have different weather to the forested areas. These thermals can be very small (football field vs corn field) or very large (city vs surrounding agricultural land). If the area is not forest or long grass it's creating a thermal in the day. The 'air border' you speak of is directly proportional to the size of the thermal. So a large city could indeed have a 10 mile radius of thermal activity surrounding the city, whereas a football field has an 'air border' of a matter of a few meters.
Also watch out for the common error of trying to gauge distance with high altitude clouds, you will be surprised by how far off you are! Try using a local radar internet service, they are generally free and you can know exactly what is going on up there relative to the ground. Don't be fooled by ground weather, vs weather at different altitudes - they vary an awful lot!
Thermals are a very interesting unseen force that most people never see, it takes training and a lot of practice to understand how they work, especially for local conditions. As any hang gliding pilot, or baby bird will attest too.
Red
P.S. So contrails/chemtrails/clouds will actually be larger over a city on average because of the excess moisture in the air. These prime contrail/chemtrail expansion conditions will cease abruptly, almost like a wall, when the plane pushes through this 'air border' or the wall of the thermal, most folks call it turbulence.
I have rode on these thermals using a hang-glider many times, when you hit that wall you go from 20 m/s UP to 10 m/s DOWN, you go from sea level temperature to altitude temperature (drop of sometimes 10 Deg C). This all happens in about one second or 2-5 meters of distance.
Oh, and the wind DOES obey the 'air border' it joins the party and goes up too - this is by no means a 'stretch'.
Its the everyday and everywhere huge 20km long vortex that hardly nobody sees! Learn to see the evidence, in it's effects.
I don't think you fully understand the concept of thermals, please read some more material and understand this everyday unseen force in modern life.
As for your observations, they are yours, I am not debating what you saw.
Any area where the natural forest has been removed, will generally create a thermal. This rising air will take with it sea level moisture and push it all the way up to 60,000ft sometimes. So you need to understand that the airspace above the city does in fact have different weather to the forested areas. These thermals can be very small (football field vs corn field) or very large (city vs surrounding agricultural land). If the area is not forest or long grass it's creating a thermal in the day. The 'air border' you speak of is directly proportional to the size of the thermal. So a large city could indeed have a 10 mile radius of thermal activity surrounding the city, whereas a football field has an 'air border' of a matter of a few meters.
Also watch out for the common error of trying to gauge distance with high altitude clouds, you will be surprised by how far off you are! Try using a local radar internet service, they are generally free and you can know exactly what is going on up there relative to the ground. Don't be fooled by ground weather, vs weather at different altitudes - they vary an awful lot!
Thermals are a very interesting unseen force that most people never see, it takes training and a lot of practice to understand how they work, especially for local conditions. As any hang gliding pilot, or baby bird will attest too.
Red
P.S. So contrails/chemtrails/clouds will actually be larger over a city on average because of the excess moisture in the air. These prime contrail/chemtrail expansion conditions will cease abruptly, almost like a wall, when the plane pushes through this 'air border' or the wall of the thermal, most folks call it turbulence.
I have rode on these thermals using a hang-glider many times, when you hit that wall you go from 20 m/s UP to 10 m/s DOWN, you go from sea level temperature to altitude temperature (drop of sometimes 10 Deg C). This all happens in about one second or 2-5 meters of distance.
Oh, and the wind DOES obey the 'air border' it joins the party and goes up too - this is by no means a 'stretch'.
Its the everyday and everywhere huge 20km long vortex that hardly nobody sees! Learn to see the evidence, in it's effects.
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