When a volcano erupts the warm fronts and the cold front that result from their activities separate from one another. this happens over the Atlantic but first they have to do the work that Jehovah designed them to do.
Over Siberia the Arctic air which is made of a chemical called polarised water. Super cooled Hydrogen Dioxide that is immiscible in water. It may hover in the Arctic for a few weeks unable to escape and too cold to fall as rain or ice, it evertually builds up just enough to leave and it does this between Russia and Alaska, sucked into the Pacific aby any passing cyclones. It is called the Venturi Effect and is how carburettors work.
Follow H-1026 as it leaves Siberia. It is the same density as the cyclones in the Behret saea Low 997 for instance. Different temperatures and Pressures but similar densities just unable to mix with one another, yet they do.
The Eye is enlarged with the mixture and the pressure drops as it approaches land, still unmixed. And it comes apart explosively as it is pushed up over the Rocky Mountains.
It is a similar process to that found in Antarctica but there the water content is preseved all along the coast as the mountians surrounding the coast sweep it dry. This is how the seas down there are always dark with Low Pressure.
