The inside of the vortex has a lower air pressure. Lower temp inside gets to near dew point and turns it into visible water vapor." User @the_german_aviator agreed, saying: "it's visible water vapor." ...

Unfortunately like the term “Polar Vortex,” atmospheric rivers have ... like rivers in the sky – that transport most of the water vapor outside of the tropics.” The key words in that ...

“Polar vortex” is one term that multiple meteorologists ... Atmospheric river: a concentrated stream of water vapor in the middle and lower levels of the atmosphere that travels across the ...

These “smoke rings," which are called volcanic vortex rings by scientists, are made up of gas and water vapor shot from a newly formed crater, writes the Washington Post’s Leo Sands.

The water vapor contained in the jet exhaust condenses ... sinusoidal oscillations and eventually to merge and form vortex rings behind the jet. This instability can be triggered by turbulence ...

Etna formed the “volcanic vortex rings,” as they are known to ... The gas rings are composed of about 80 percent water vapor, with the remaining 20 percent mostly made of sulfur dioxide ...

Known as volcanic vortex rings, the phenomenon only occurs ... the volcanic variants are largely made of condensed gases, predominantly water vapor, escaping from the magma and propelled from ...

With a polar vortex causing wind chills to drop as low ... But since cold air can’t hold as much water vapor as warmer air, the water condenses. Extremely cold temperatures quickly freeze ...

One of those factors is cold, of course, but another is water vapor that is available to freeze into snow. Intriguingly, the Southern Hemisphere is also home to a polar vortex, but that system ...