Atmospheric Halos

You may know sundogs. But there many more kinds of halos in the sky. This computer simulation shows how the shape of halos changes with sun altitude.
Simulation done with Halosim software.

Category:

Howto & Style

Tags:

• atmospheric
• halos

[nickbhalo]

@OverlyExcitedNewJack silver and lead iodide, not ethylene dibromide.

[nickbhalo]

@OverlyExcitedNewJack But why would they even want to induce condensation? What's the point? And in a previous comment you said that halos like this in the video don't happen naturally, well this isn't true. For example, in antarctica on january 11 1999 there was a massive halo display, which from the pictures is much better than what is in the video for 20 degrees sun elevation. Look it up and there should be a page about it on atmospheric optics. Also, the best nuclei are dry ice, silver and

[OverlyExcitedNewJack]

@nickbhalo What you're saying is wordy, but not saying much. We're not talking about whether clouds exist or not,or for how long; the issue is artificially seeding them on a massive global scale and using the energy as a tool to various ends. In case you're still a little bit confused at this point, the geoengineering program is established and has been for decades, one aspect of which clearly uses nano particle aerosols to induce condensation. Books are great, but someone needs to write them.

[nickbhalo]

@OverlyExcitedNewJack whether clouds can be supported or not. This just proves contrails are nothing more than clouds, just plane induced clouds. Man made clouds are nothing new. Large fires typically make clouds above them. Cooling towers almost always have a 'contrail' coming out of them. However, the air is so warm around them they rarely persist. If you move cooling towers to a cirrostratus, they'd persist.

[nickbhalo]

@OverlyExcitedNewJack Cirrostratus have been recorded before planes such as in Luke Howard's original cloud atlas. Also, long lasting contrails almost always are around with cirrostratus. That is because the majority of the planes are flying at that level, and it is humid enough to allow cirrostratus clouds, so it allows contrails to persist. Even then, some planes leave shortlived contrails, yet they are flying at different levels. This shows a strong relation of persistance to weather clouds

[nickbhalo]

@OverlyExcitedNewJack There's nothing against that. They're the same as cirrostratus clouds. If the air is not humid, the water droplets formed evaporate faster than they can condense. Droplets in clouds are in an equilibrium of evaporation and condensation. When air is humid, the water drpplet or ice crystal provides a source for the water vapor in the air to condense. If there is enough water vapor, it can substitute for the evaporative loss. Cirrostratus have been recorded before planes

[OverlyExcitedNewJack]

@nickbhalo My point is: persistence of contrails at that altitude is NOT supported by physics and should be the first red flag to anyone who understands atmospheric dynamics and phase change.................

[OverlyExcitedNewJack]

@nickbhalo lol, is that why my breathe lingers around on those winter days, eventually fogging out my entire subdivision; city and precipitating water vapour out of the air, increasing local temperature due to the latent heat of condensation despite the fact that ground level barometric pressure is considerably higher than, say, the tropopause? Wait, that doesnt even happen at ground level, (it was sarcasm), let alone an env. of much LOWER pressure, and much lower water vapour concentration...