[FRIAM] Nothing to do with nick, do we have a formula

[Gillian Densmore]

Eric, Ahh. ok. As it's been explained to me, basically like say the jet
stream is a  wall(sort of) it keeps it place like much smaller vortexes
like dust devels (sort of).  Something about carbon pulling  the cold har
the polls usually keep in place down both up down and north and south down.
What i don't  get is why we get them now. How is that working?  Like is it
directly the c02 somehow bonding ocasionally? pushing the  jet streams
around?  or more indirect because more energy and heat in  the air somehow
causes the colder heavier air to sink  to the ground just  enough it causes
so much to practically freeze?

On Tue, Feb 16, 2021 at 2:29 PM David Eric Smith <desmith at santafe.edu>
wrote:

> Gillian,
>
> I was told several years ago (2018) by a specialist in this area that
> these extreme southerly dips in the jet stream are a consequence of the
> weakening of the polar vortex on Earth.  It happens I was in Korea at a
> time corresponding to the Winter Olympics in PyeongChang, and we were
> freezing our asses off under a cold spell similar to this one.  It too was
> due to a very southerly dip in the jet stream.  So it was timely for this
> scientist to talk on the subject, and I got to sit with him at lunch and
> ask more questions.
>
> I have an impression the jet stream functions, at least during part of the
> year, a little like a wall between arctic air contained to the north of it,
> and temperate or equatorial air to the south side.  So when it swings very
> far south, the domain of arctic air extends further south than it normally
> would, and since we don’t normally experience winter arctic air, it seems
> very cold.  But apparently these more extreme north-south swings are due to
> weakening of the vortex — when it turns faster the jet stream has less
> severe excursions.
>
> My impression, in looking at jet stream patterns after that, is that when
> we see these swings we tend to see them in three places around the world:
> the central-to-eastern US, Eastern Europe or very-west Asia, and then over
> the Korean Peninsula.  I haven’t checked whether they are doing the same
> thing just now.
>
> (The fact that the jet stream likes to make these polygonal shapes reminds
> me of the pictures of the hexagonal patch on the north (?) pole of Saturn,
> the boundary of which I think is a similar kind of formation (roughly).
> The presence of continents on Earth causes this to not be a pure fluid
> phenomenon as it would be on Saturn.)
>
> The non-intuitive part of it is that the vortex weakens because the arctic
> is not as cold as it should be.  So we feel more cold, but on a global
> average, we are less cold.  A similar phenomenon becomes more intuitive
> during the summer, when northern Sweden is experiencing uncontrollable
> forest fires.
>
> n.b.  There may be things in what I said above that are wrong because I
> haven’t understood them or didn’t hear it all correctly.  So do find
> somebody who does this for a living to ask.
>
> Eric
>
>
>
> On Feb 16, 2021, at 1:58 PM, Gillian Densmore <gil.densmore at gmail.com>
> wrote:
>
> For how ass the weather is because of artic air?
>
> I am prepared for  to see a lot of fur-fetched replies. We can Wolf down
> some facts, or just retriever it out as just how it is.
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