Source: The Derecho
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.
You can’t ague with a gif animation.
Right now, all we need is an explanation. When you are trying to work out a puzzle it is always nice to start with the answers. For then all you have to do is wonder why. With volcanoes you already know the answer is heat but the puzzle then is why and how.
Once you realise it can you know it eventually must.
You know that under every mountain range there has to be a river. At least one river, probably two, as without them you can not have a valley. So how does heat get into underground chambers?
Now try imagining a mountain range to be a chest of recycling materials. Like a set of lungs recharging a jaded blood stream, a mountain range breathes tides. The incremental rise of a mountain is not necessarily diurnal as are oceanic tides. Daily tides have been measured and it is assumed that all mountains keep a gentle daily rhythm.
But when the earth quakes, a cliff can rise out of the ground to the height of immense galleries whole strata at a time almost instantly. The Anchorage, Alaska earthquake lasted approximately 4.5 minutes and raised huge tracts of land several feet above sea level, at the same time dropping similar volumes down below sea level. This was back in 1964 and although there are many earthquakes in the region, such a thing has not recurred.
This is the tide on which mountain ranges operate.
If you regularly watch the lists of earthquakes as they are published, you soon build a picture of seismic co-tidal lines. (OK, I was asking god what happens but he doesn’t like keeping secrets – besides how do you stop angels shouting?)
What happens is that the rare tremors start out in the Weddell Sea and move along the various continental shelves, often following direct lines. As they move away from the huge Antarctic storms their magnitudes tend to increase so that those seismic waves that are focussed on the Fijian Triangle are relatively large and as they pass beyond that focii their magnitudes fall.
This is all in keeping with tropical storms which seem somehow to be able to limit the seismic activity.
But whilst tropical storms are a limiting factor with earthquakes, they are an appetiser, along with storms elsewhere, for volcanic activity. Somehow the increase in wet weather corresponds to an increase in volcanism. It is a pretty obvious factor and one has to wonder why the various agencies bother monitoring either storms or earthquakes if they need to employ such stooooooopid oiks to do so.
But then why go to the bother of warming all the ground based weather stations to falsify data documentation when you can just employ stupid politicians to ignore everything the experts tell them anyway. (That is after carefully selecting the experts and priming the News Media.)
It must cost a lot of money to lobby political clout; one would be a fool to misuse it. Democracy must be extremely expensive. Heigh ho, back to the dirt:
I am still puzzling on the processes that cause eruptions but it is pretty obvious that under pressure it would take very little heat to put sulphates, nitrates and carbonates into a difficult balance. As with matter in the four states of physics, magmas must be pretty abrupt in their reactions.
There are three states for matter on the surface, with (H2O)^n it is:
Ice > Water > Steam but in a superheated pressure cooker, water can become red hot and still be water. It’s chemical behaviour though, is neither that of water nor steam. Huge salt domes are created under mountains as sea water loses its ability to hold salt. And huge chambers are created to hold these domes when water gains the ability to dissolve quartz.
So now you get the picture of yin and yang floating about in that stuff. Eventually the dykes spring a leak as too many cookers boil the broth. Once superheated steam finds or creates a vent the pressure cooker blows.
On the other side of the coin however one appreciates that beneath our feet, earthquakes constantly turn huge boulders to dust so the process recreates itself in the spin that god spoke about in Genesis chapter one:
“We have ignition.”
I am certain we are due for the next eruption imminently I am getting the impression from the North Atlantic chart:
The broken warm fronts shown on the above chart are indications that a severe volcanic eruption has taken place. The warm fronts are left over from the previous delta like the one present in the “Low 967” focussed on Newfoundland in the same chart.
What happens is the cold front splits off from the warm front in the “occlusion” and crosses the continent. In the forecast above, this will be Europe. The warm front continues with the current, the Gulf Stream powering it as it moves into the Arctic.
Under the sheet of ice cloud that was released in the eruption however the warmth can not rise from the ocean surface and stays near it giving rise to an abundance of miniature pressure systems:
At least one of which will make it to Greenland. Look up the number of earthquakes that took place up to the appearance of this Greenland High. You can easily learn to forecast tropical storms from the lengths of time between M < 5.5 earthquakes.
Every three hours is worth one F (force) on the Beaufort Scale. When the time lapse reaches Category 4 Hurricane strength, you will be looking at a large blocking High in the Mid Atlantic
Normally when a spiral of warm fronts is presented, the indication is for an earthquake, generally the earthquake is a large one or at least of 6 > M. But if the accompanying tropical storm is a large one this dissipates as swarms of smaller scale.
This set up having the appearance of a twin blade aircraft propeller is unusual. It is caused by the presence of so many pressure centres. After pondering this situation for a few days I concluded it must mean a major eruption is pending. After watching out for a suitable site I concluded it is going to be Bogoslof in the Aleutians.
I may be wrong, especially as I am hoping, subjectively, to be correct about the refreezing of the Arctic Icepack this year. Along with the loss of heat from the planet caused in eruptions (taken to below freezing perhaps through the tropopause) volcanic ash is a cause for temperatures in the seas to drop.
When the High reaches the tip of Greenland expect a 5.5M earthquake or larger to accompany its passing.
What you can do is check with a search of the USGS archive if the chart is no longer current. You can also check on the Tornado Database for derechos when a delta reaches the coast of Europe and the cold front runs ashore
I don’t know how long the eruption of Bogoslof has been going on
Or if all this stuff is just a dire warning but I am beginning to think now, that there are no warm fronts without fire,
I leave it for you to judge.