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2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!

 
Luisport (OP)

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12/27/2012 05:30 AM

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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
Posted Yesterday, 23:09

Thanks Chiono for those charts. Last few runs were really over the top, to put it that way. And I agree with Chiono, that this could in fact be classified as an SSW. No doubt about it. The thing that bugs me at the moment is the classified type of the SSW. I have heard people saying its a split SSW on the GFS. Of course its a split after the vortex is getting beaten down and basically getting ripped apart. But the way I see it, this should be classified as a displacement SSW, because the SSW and the "lethal blow" is supposed to come with the strong wave 1 and the displacement. For me, a split type SSW is by definition and by an example, the Jan/Feb 2009 SSW. So feel free to correct me if I am wrong, but how would you personally classify this upcoming event? Or maybe I missed something here.


The upper strat. looks like its going to get literally overpowered by the High.



p.s.: Now we just need the ECM to kick things up a notch or two. [link to forum.netweather.tv]
Luisport (OP)

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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
Posted Today, 03:19


zoey, on 27 December 2012 - 02:30 , said:


I'd like to introduce myself, my name is chris, I'm from across the pond in Langhorne, Pa which is about 30 mins north of Philadelphia. I have 3 questions I would like to ask:
1. what affects will the warming of the stratoshere have on my area?
2. will the warming have any affect on the mjo, i've noticed the european model has it going into phases 4 and 5 (which does not look good for cold in the east coast)
3. will the warming affect the ao and the nao?

I've enjoyed reading your posts

thank you
Chris


I would like to take a stab at some of these questions if you don't mind. I'm also from the Philly metro area...small world I guess .

1. The affects of the warming are highly dependent on what happens to the polar vortex as a result of the warming. Most of the charts we see on the GFS show a split vortex by the end of the long range. This split will have to be monitored since one piece may setup over Canada/Greenland and will create quite a problem if we wish to see a -NAO. We would prefer to see the split where one piece heads to Siberia and the other to Europe which would allow HP over Greenland and a -NAO. For now we understand a warming is coming but the exact details of what happens to the PV remain a mystery and won't be really understood until middle January.
2. The MJO is a tropical atmosphere model which is dependent on deep tropical convection. The general principle is that the MJO affects large scale patterns in both the tropical and subtropical latitudes but is not as influential when it comes to high latitude patterns, although to say it has no affect would be erroneous. In fact, there have been numerous instances where the MJO was in an unfavorable phase and directly opposed to cold in the E US but the warming affects were dampened due to the more favorable Atlantic/NAO blocking. This is certainly a possibility if we can get blocking established prior to the MJO reaching phases 3-4 but at the moment this doesn't appear so and I do think we will warm up a bit come mid-january. It's the old battle of Atlantic vs Pacific and which one is more important for the E US in the winter.
3. Pretty much the same answer as 1 except the AO will almost certainly drop strongly negative as high pressure pushes away the PV from the North Pole. The fragmentation of the polar vortex is still uknown and details are hard to come by at this range. Right now if we were to take the GFS at face value in the 2+ week range we would likely see an east based -NAO which is better than positive NAO but would favor above average snow into the Great Lakes instead of I-95.

Hopefully this clarified a few things.
[link to forum.netweather.tv]
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
Wednesday, December 26, 2012Polar Vortex Breakdown Will Lead To Frigid January-February
By Andrew at 12:38 PM
Confidence is growing that the polar vortex will sustain enough damage to break down in some levels of the atmosphere and lead to a pretty darn cold January into February.

We'll start out with observations. Above is the observed temperatures in the 70mb layer of the stratosphere, known as one of the lower layers in the stratosphere. We are looking on the far right side of this picture to see current values. If we do so, we see that two warming events have already taken place. The first warming event brought temperatures well above normal in the 70mb layer, and there is an ongoing warming event taking place that is leading temperatures to skyrocket in the lower stratosphere.

This animation of observed temperatures in the 50mb layer also shows such recent warming (for those unfamiliar with the millibar scale, lower numbers = higher height in the atmosphere). Both warming events previously described on the first graph are shown in this animation, with the first warming event propagating from East Asia into the North Pole. That warming event then died down and slipped back into East Asia. From there, that warm body of air moved across the North Pacific and is now in Canada, where it may be trying to make a move into the Arctic Circle. If such an event happens, this warming will become much more significant than the last.

The main subject of this post is something called the 'Polar Vortex', or PV for short. The Polar Vortex is a low pressure system stationed over the Arctic, with varying strengths. The PV is actually what drives the well-known Arctic Oscillation. When the vortex is weak, the AO is negative. When the vortex is strong, the AO is positive. We'll talk more about the AO later on. But it is important to note that the polar vortex is weakened when significant warming events, like the two shown above, happen.

Now, let's go back to the first chart. See how we are already well above normal for this time of year? That means that the polar vortex is theoretically weaker than normal at the moment. If that warming in Canada continues and/or strengthens, the polar vortex will only get weaker and weaker. As long as those above normal temperatures continue, the polar vortex is indeed vulnerable to collapse, if the right parameters come together.

There is something else used to see how the stratosphere is being impacted by warm air, and it is called the Eliassen-Palm Flux, or EP Flux for short. The EP Flux measures the strength by which air from the lower atmosphere is being forced into the stratosphere. Considering the word 'flux' means movement, one can think of the EP Flux as showing the strength of movement of warm air into the stratosphere. Shown above is an 8 day observation of the EP Flux. In recent days, we have seen the EP Flux strengthen, as the second warming event continues to hold its ground. Note the new presence of colorful arrows in the area above the number '10' on the lefthand side of the Dec. 24 image. This means that warm air is now penetrating the upper stratosphere, effectively infiltrating the entire stratosphere. This is a major blow to the polar vortex, as warm air is now pushing into the entire vortex, not just the lower part.

The ECMWF forecast for EP Flux is at the bottom of this multi-image forecast. Looking at that EP Flux, we see that the European model is forecasting the flux to rapidly strengthen as the New Year approaches. This would mean warm air from the troposphere would be shooting into the stratosphere at a rate more than triple the strength we saw with our first warming event in early December. That first warming event is shown as a cluster of arrows above the word '1DEC' in that same bottom image. Should such a forecast verify, it would be the highest EP Flux values we have seen this winter season, and would certainly induce very heavy stratospheric warming- even more than we have seen to this date. If any further warming occurs (and if the EP Flux forecast shown above verifies), we have a shot at breaking the warmest value in the 70mb stratosphere on that date (shown in the first graph as the top light gray line)- something that means chaos in the polar vortex.

Continuing with observations, we visit an index called 'Mountain Torque'. The Mountain Torque, also called MT, is a fairly challenging index to decipher. However, I have come to understand it as a component that can help warm the stratosphere and weaken the polar vortex. In high values of mountain torque, it is expected that the stratosphere will warm rapidly in a phenomenon called the Sudden Stratospheric Warming (SSW). (The Sudden Stratospheric Warming got its name due to the rate at how the stratosphere warms, hence the word 'Sudden'. There is also a weaker sudden warming event called a Major Stratospheric Warming event.) Considering the mountain torque values are at values not seen since late fall, I find it very plausible that the next 5-15 days will bring another good warming to the stratosphere, a crippling blow to the vortex as the current warming continues.

Now we get to the forecasts of what the models say will happen.

We start with the GFS model and what it says about warming in the stratosphere. Forecasters commonly use two types of graphs when dealing with the stratosphere: Temperature forecasts and pressure forecasts. The former option shows warmings in the atmosphere, the latter shows the strength of the polar vortex (remember, the polar vortex is a low pressure system just like ones we see in the US, just bigger and more permanent). We'll start with the temperatures. Below are 5 images of 5 layers of the stratosphere; I'll annotate each image appropriately.

30 millibar 10 day forecast
You might be wondering why you should care about a bunch of reds and blues and fancy colors. Well, in each of these images, significant warming in the form of very warm colors is shown next to very cool colors, a.k.a. the polar vortex. Anytime you see those reds and grays, that defines very warm air finally reaching the upper stratosphere.

Something very interesting I saw in those 5 images, something you may have noticed as well, is the steady westward progression of the warm colors with each image. If you can picture 3-dimensional things in your head, you may have thought of a spiral, in the sense of the warmest areas of each respective stratospheric level rotated as each image showed a lower level of the stratosphere. If you want to compare it to material objects, think of rotini pasta or how you get bubblegum from the gumball machine; how it goes down the spiral to your waiting hand.

That spiral analogy leads us into the next significant forecast piece- displacement. You may hear this word and think back to 8th grade chemistry and water displacement, or even high school, but this is a different displacement. This is the displacement of the polar vortex.

1 millibar 10 day temperature and pressure forecast
Shown above are two pressure and temperature forecasts from the ECMWF model. The letter 'L' defines the center of the polar vortex for each level in the atmosphere, and the letter 'W' shows the warmest values in each respective layer of the atmosphere. If you notice a plus symbol, that is the center of the Arctic, quite literally the North Pole. And if you happen to see the letter 'H', that symbolizes the highest pressure for that atmospheric level.

I said we were looking for displacement here, and that is what we will do. We are trying to find how far apart the letter 'L' is from the 1mb image to the 100mb image. If we look in the top image (100mb), we see that the polar vortex is centered just to the south of the North Pole, a.k.a. just north of Europe. The 1mb image on the bottom has the polar vortex just east of Greenland, and high pressure building in over Eurasia.
While this is not a classic example of extreme displacement, it is apparent that there is some good displacement. The top image shows two apparent centers of low pressure- one with the 'L' that I described in the above paragraph, and one not marked but still shown in the top right corner of the image in what appears to be East Asia. On the 1mb chart, high pressure has built in right over that second low pressure area that I told was in East Asia. As for the deepest centers of the polar vortex, they are relatively close to each other, meaning the displacement is not that extreme, but far enough apart for me to introduce my Jenga analogy:


Think of the game Jenga. You must try to take out pieces of the tower to get as many pieces out, but still have it standing. The more pieces you take out on one side, the more unstable that side becomes, and eventually the tower falls down because of the difference in stability of the tower (a.k.a. where more blocks are placed). In a similar situation, when you have the polar vortex far apart in different levels, like what is forecasted above, the polar vortex becomes more unstable and weakens, possibly to the point of collapse.

One more analogy for you: Think of the polar vortex like a cylinder full of cold air. If you cut the cylinder in half and move one half away from the other, the cold air will sink. That is exactly how the stratosphere. If you have displaced parts of the stratosphere, the cold air that is held in the polar vortex will be released and flow down into lower latitudes. If the PV is displaced enough, it may collapse altogether, leading to an icebox solution over parts of the world.

The GFS model shows a similar situation as far as that high pressure/low pressure difference in Asia, but has a lot more displacement in the actual polar vortex as shown below:

100mb 10 day pressure forecast
The GFS dislocates the polar vortex far away from itself in between these two levels, which theoretically would enhance the probabilities of a weaker polar vortex and thus higher potentials for a strong cold snap in January and February.

So, we have big warming in different levels of the atmosphere per the GFS big pressure differences in the polar vortex in the GFS, as well as good displacement of the vortex in the ECMWF. But there is something else showing up in the GFS- complete collapse of the upper stratosphere polar vortex.


10mb 384 hour pressure forecast
This is where you will need to read these images closely. We'll start with the top image at the 1mb level. In this top image, we see a large circle covering much of the Arctic. If you read closely, you will see that the numbers go up as the lines get smaller, meaning that this is a gigantic high pressure system. The polar vortex has collapsed in the 1mb layer at Hour 384! The 5mb layer shows a big high pressure system over the Bering Sea splitting up the polar vortex into two pieces, and a similar forecast resides in the 10mb image.

You weather aficionados are most likely wondering why I'm showing forecasts at Hour 384, the longest of the the long range, and the high point for forecast failure rates. The reason is simple: Trends. I went back across several GFS runs for the 1mb forecast and found that the high pressure system was still covering the Arctic in as many as 5 other forecasts. That said, my faith in this forecast increases dramatically, and, while it's still quite a ways out, I am encouraged by this forecast of a polar vortex collapse in the very upper stratosphere.

Remember how I said the polar vortex is the driving force behind the Arctic Oscillation? Let's keep that front and center. This is a multi-model (and ensemble) forecast of the Arctic Oscillation. In this forecast, we see that the GFS, GFS Ensembles and GGEM Ensembles project the AO to be in the positive range come the 2nd week of January. Based on all the evidence I reviewed above, do you think that will actually happen?

This 8-10 day 500mb height anomaly forecast from the ECMWF (left) and GFS (right) shows no striking presence of a positive Arctic Oscillation, which would be shown as below normal height anomalies across the Arctic Circle. While we do see some low pressure anomalies creeping into the North Pole, nothing defined is showing up, meaning I believe this positive AO forecast is bogus. Considering the warming already happening, the warming forecast to happen, and, potentially, the collapse of the upper stratospheric polar vortex, I have a hard time believing the models are correct with a +AO in the future.

In summary:
-Significant warming is already ongoing in the stratosphere.
-EP Flux values are now pushing warm air into the entire stratosphere.
-EP Flux forecasts show dramatic and significant warm air being forced into the stratosphere.
-Mountain torque highlights more stratospheric warming in the future.
-Model forecasts support heavy damage being sustained to the polar vortex.
-The positive AO forecast does not look correct in my opinion.

All in all, what I have described here today bodes well for a cold episode that may span the months of January and February. If the polar vortex has a collapse, severe cold could very well overtake the nation. Prepare for cold times ahead.

Andrew [link to theweathercentre.blogspot.de]
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
Posted 11 minutes ago


Luisport, on 27 December 2012 - 13:12 , said:


Can anyone tell me what we in europe will have? And to the south like Portugal and Spain? Cold temp to us too? Thank's!

You can never tell the tropospheric response at this stage (-10d from SSW), but the overall outcome would be more conductive to northern blocking, with vortex energy moving elsewhere, potentially away from northern latitudes- the crux of the current warming will be how the vortex responds (and to a lesser extent, where the polar high and associated ridge puts itself)-

Right now, I couldn't tell you, but the chances of cold will increase for Iberia as we progress through January. Ask back in perhaps a week or so and confidence will be higher as the NWP comes to grips with the energy 'spill' from the initial warming. [link to forum.netweather.tv]
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
Joe Bastardi‏@BigJoeBastardi

Major stratwarm getting ready to start precursor to major US cold outbreaks. Plenty of winter this year [link to twitter.com]
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
Arctic DOOM 5a flick
 Quoting: Anonymous Coward 30695076


bane the arctic!
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
Site forecast team

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Posted 6 minutes ago

It looks to me like a fairly standard displacement of the stratospheric vortex that happens quite often at this time of year. At upper levels in the stratosphere the vortex is displaced towards the UK and at lower levels towards Russia. If anything it is a little late this year.

In terms of what we can expect then I think we will see high pressure spreading from the south to cover the UK. So I would be thinking a few days of cooler temperatures with perhaps some fog.

Followed closely by a brief northerly spell. This could give snow but the ice sheet to our north has been disrupted and held back by the recent icelandic lows.Considering other spells similar to this then you might be thinking about snow for Scotland or through the cheshire gap. If it continues for more than a few days then you might start to think about polar lows coming south from off the coast of Norway. At the moment it just looks like a brief northerly , but it is way too early to tell.

What it does mean is that the siberian high gets disrupted with more mobile weather crossing the likes of Norway and Novaya Zemlya. It is my contention that mountain torque from these areas (think wave breaking or low pressure systems crossing the mountains) are key areas for planetary waves which can disrupt the stratospheric vortex. In other words this displacement could set us up for another warming in around a months time.

What we can be sure about is that the events in the stratosphere now are setting us up for a change in pattern and for once I will be rather glad to say goodbye to the icelandic low for a bit.


Following chart from this link [link to www.ecmwf.int...]
[link to forum.netweather.tv]
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
Posted A minute ago

Major SSW is looking likely, which will cause a displacement of the vortex. The vortex will then split several days after this as well though.


Interesting strat temperature from the 12z today, going for a second warming, this time over Canada. The PV must be getting fed up of this now.

[link to postimage.org] [link to forum.netweather.tv]
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
Posted 20 minutes ago


Bishop Brennan, on 27 December 2012 - 12:13 , said:


I think I'm right in saying that the date of the forecasted SSW has actually moved forward somewhat, from Jan 10th to Jan 5th or thereabouts.

Bish


Based on the latest ECM forecast an SSW is set to occur on the 4th of January.
[link to forum.netweather.tv]
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
Ryan Maue‏@RyanMaue

Cold colors on the KNYC ECMWF ensemble minimum temperature quilt from 00z through the New Year. [link to twitter.com]
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
Thursday, December 27, 2012Sudden Stratospheric Warming About To Take Place
By Andrew at 10:47 AM

Animations of the 50mb temperature level (as shown above) suggest that a sudden stratospheric warming (SSW) is about to take place.

The above animation covers 30 days and shows two warmings. The first stratospheric warming is shown in the first week of December with a big red blob flowing into the Arctic. Fast forward ahead to today and we find another huge red blob beginning to make a move into the Arctic. Why can I tell? In the last two or three frames, you can see the small lines start to push up into the Arctic in response to warm air pushing north- a common trait with how stratospheric warmings happen.

A chart of observed 70mb temperatures shown above clearly shows the aforementioned warmings. The first stratospheric warming is shown as the first red spike on the far right of this graph, and the recent warming (and soon to be SSW event) is shown at the very end of the image.

This was all mentioned in yesterday's big stratospheric post (link here) in how warming in the stratosphere will provoke the polar vortex to sustain heavy damage, possibly to the point of collapse in upper stratospheric levels. That means cold weather starting mid January.

Andrew [link to theweathercentre.blogspot.de]

Last Edited by Luisport on 12/27/2012 06:13 PM
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
[link to www.meteociel.fr]
Luisport (OP)

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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
Thursday, December 27, 2012Sudden Stratospheric Warming About To Take Place
By Andrew at 10:47 AM

Animations of the 50mb temperature level (as shown above) suggest that a sudden stratospheric warming (SSW) is about to take place.

The above animation covers 30 days and shows two warmings. The first stratospheric warming is shown in the first week of December with a big red blob flowing into the Arctic. Fast forward ahead to today and we find another huge red blob beginning to make a move into the Arctic. Why can I tell? In the last two or three frames, you can see the small lines start to push up into the Arctic in response to warm air pushing north- a common trait with how stratospheric warmings happen.

A chart of observed 70mb temperatures shown above clearly shows the aforementioned warmings. The first stratospheric warming is shown as the first red spike on the far right of this graph, and the recent warming (and soon to be SSW event) is shown at the very end of the image.

This was all mentioned in yesterday's big stratospheric post (link here) in how warming in the stratosphere will provoke the polar vortex to sustain heavy damage, possibly to the point of collapse in upper stratospheric levels. That means cold weather starting mid January.

Andrew [link to theweathercentre.blogspot.de]
 Quoting: Luisport


bumpbumpbump
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
watching this closely
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watching this closely
 Quoting: Dr. Acula


My friend this forum is very very good! [link to forum.netweather.tv]
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watching this closely
 Quoting: Dr. Acula


My friend this forum is very very good! [link to forum.netweather.tv]
 Quoting: Luisport



Thanks!

cheers
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
Joe Bastardi‏@BigJoeBastardi

Major stratwarm getting ready to start precursor to major US cold outbreaks. Plenty of winter this year [link to twitter.com]
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
Last time a checked the polar vortex is forecasted to redevelop and drop down into east Canada. This happens all the time and leads to a VERY cold forecast, but when the polar vortex drops like this it usually suppresses storms
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
Last time a checked the polar vortex is forecasted to redevelop and drop down into east Canada. This happens all the time and leads to a VERY cold forecast, but when the polar vortex drops like this it usually suppresses storms
 Quoting: Anonymous Coward 27326813


care to provide a link of that said forecast?
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
[link to www.meteo.psu.edu]

GFS at 180 hours is showing it dropping down like I said and temperatures are pushing -20 at 850 millibars
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
GFS is also showing 0 degrees pushing all the way down to north Texas. Brrrrrr cold
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
shortly, this means we're all gonna die banana2
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
Arctic DOOM 5a flick
 Quoting: Anonymous Coward 30695076


bane the arctic!
 Quoting: Matrix-V


bane

Noun

1 A cause of great distress or annoyance.
2 Something, typically poison, that causes death.
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
And a common assumption people make is that Stratospheric warming is ONLY related to solar activity which is 100% wrong. There is a strong coloration between heat energy being transferred from the equator up to the polar region this time of year which has a effect on the stratosphere also.
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
GFS is also showing 0 degrees pushing all the way down to north Texas. Brrrrrr cold
 Quoting: Anonymous Coward 27326813


could be worse....

in the low teens up north

yikes

65 percent of USA covered by snow


by ROBERT on DECEMBER 27, 2012 ·

[link to iceagenow.info]
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
GFS is also showing 0 degrees pushing all the way down to north Texas. Brrrrrr cold
 Quoting: Anonymous Coward 27326813


could be worse....

in the low teens up north

yikes

65 percent of USA covered by snow


by ROBERT on DECEMBER 27, 2012 ·

[link to iceagenow.info]
 Quoting: IssueX


wow very interesting
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
Central and Eastern Europe has some interesting drop in the ozone levels, maybe this explains plus 15 Celsius on the Austrian sky resorts?

[link to exp-studies.tor.ec.gc.ca]

Also I noticed an unusual increase of the ozone levels along the US - Canada border, curiously this overlaps the snow storm. This ozone drop and increase only shows something that happens in the upper atmosphere, but still cant figure out what exactly..
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
M E T H A N E
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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
There's a Southern Polar Vortex too?
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Dr. AculaModerator
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12/27/2012 07:51 PM

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Re: 2013 Polar Vortex Collapsing; Complete Disintegration Possible!!! US, North Europe, Midle East Hit!!!
And a common assumption people make is that Stratospheric warming is ONLY related to solar activity which is 100% wrong. There is a strong coloration between heat energy being transferred from the equator up to the polar region this time of year which has a effect on the stratosphere also.
 Quoting: Anonymous Coward 27326813


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