My meteorlogical skills are basic at best that is why I keep to sea level besides, that is where all the best stuff happens. Look at the bottom line and you won’t go too far wrong:
In this case, the bottom line IS Antarctica. The setting for the run is “precipitation ” and I chose to look at the sea-level. They go to the trouble of running several different heights and several different meteorological phenomena on their server.
This setting allows us to see how the rotational forces are operating on both the individual cyclones and the continent as an whole. Allow me to guess at their description…
There are two major circulation patterns that tend to occur. In this one, the whole sea surface tends to draw the cyclonic forces apart and carry them around the coastline before they have much chance to deepen.
I must admit I am guilty of not paying much attention to the pressures the individual cyclones reach. I am more interested in the overall pattern. I am sure that a more diligent student will draw a lot more interesting stuff from closer attention than I can afford in this lifetime.
All I can say is “Go for it.” and wish you the very best of British. I hope I am here long enough to become jealous.
The dark masses are not pressure systems alone but are composed as far as I can make out of water content. (Down there this will be mostly ice.)
Once it gets past the warm pools for the Doldrums where early explorers used to head out in their fleets, in time to dispose of dead horses (rather than eat them) The cyclonic weather along with the airborne debris from South American rivers, is streamed into the currents circulating the continent.
Whilst the trade winds are called the Roaring ’40’s, the roaring ’60’s can be far more boisterous!
But pay attention to the streamlines.
Air pressure does not look they way it feels. As pressure intensifies, it develops its own air-foils and air-dams in reaction to the geography. Some of which it forms for itself.
Against a shoreline for example, an onshore breeze
A sea breeze or onshore breeze is a gentle wind blowing from sea toward land, that develops over bodies of water near land due to differences in air pressure created by their different heat capacity. It is a common occurrence along coasts during the morning as solar radiation heats the land more quickly than the water.
Antarctica deals with gentle breezes by scaring the **** out of them; the skid marks they leave behind corresponding to cols in more sober climes.
The patterns cols make in gentler regions are “x shapes” made up of the separation between Highs and Lows.
The same is true here but the Highs are not high enough to be anticyclones, for whatever the physics involved.
I am pretty sure it must have something to do with ice content in airflows at sea level pressures (or for that matter the rotation imparted into any air-stream at any height by large amounts of ice?)
Thinking about it now (for the first time) the compression is similar to that of the jet engine and must create huge amounts of heat that changes the air’s dynamic as it melts the ice in it.
I wonder how explosive such minute crystals of pure water can be?
As the ice evaporates the cyclone eyes tend to expand and the outer wall of the vortex becomes unstable.
Expanding as far as the doldrums allows the outer layer of air to fall away. Where it can assume its preferred rotation.
there is always South America…
Whilst I may have succeeded in describing the evolution of the ice. I have not yet managed to predict the knock on effect of such phenomena.
I know that they mean the development of huge storms elsewhere and along with tornadoes; volcanoes.
Even though the Internet has removed the Dark Ages from the data available to man. It has not removed the heebie jeebies of thinking something new. All too often that becomes the work of the next generation.
Well get busy, kids; there is never enough time and with youth it tends to seem infinite.
But it isn’t.
Good luck and may god bless you, you are attempting to unravel the work of the angels.