Jet Stream and Climate Change?

I was pondering this last night when I went to bed and than when I saw how the Jet Stream went From the Arctic to the Tip of Florida, I wanted to find out if Scientists were looking into this.

This Paper is Sponsered by NOAA:

http://www.atmos.washington.edu/~david/paleo_circ.pdf

This one is about Abrupt Climate Change:

http://www.ngdc.noaa.gov/paleo/ctl/abrupt.html

A bit about what the Jet Stream is:

http://www.enviropedia.org.uk/Atmosphere/Jet_Stream.php
http://www.srh.noaa.gov/jetstream/global/jet.htm

I see by this that the IPCC hasn't studied the effect of the Jet Stream on th Global Climate.

"No systematic studies are available to assess the impacts of these procedures and schemes on climate sensitivity and variability."

http://www.grida.no/climate/ipcc_tar/wg1/281.htm

Here's and Interesting Article:

http://weather.about.com/od/weatherfaqs/f/dustbowl.htm

2008-01-03T13:47:20Z

Dana - I figure it's one of those, what comes first problems. What I was considering before I went to sleep last night was a stronger Arctic Jet Stream where the pattern were to change and do more patterns like we saw this week. That's what had prompted me to dig deeper into this supposed hypothesis I came up with to see what scientists thought of this possibility.

2008-01-03T16:41:17Z

Gwens - Thanks for adding to your answer. And the only reason I didn't know how to answer the question you linked to your answer is due to not knowing where you live.

Another part of my hypothesis is about the air pressure behind on Jet Stream becoming stronger than the air pressure from another Jet Stream for much longer periods of time.

And if so would this create even more changes to our climate than we are seeing now?

I love watching storms form it's one of the most dramatic events of nature. How the air seems to collide and form storm clouds.

This is a global cooling scenario brought on by dramatic increases in air pressure behind the Polar Jet Stream.

Imagine patterns we are seeing this week in the Jet Streams over the US. Happening once a week for four and a half months (December to the middle of April) it would make spring shorter and let's say it's starts earlier the following year and lasts to the end of April.

2008-01-03T16:46:48Z

In your mind keep adding one to a half month to the beginning of this cool down cycle. How long do you think it would take to enter a new Glacial age.

(Remember this is only a hypothesis, since I don't know all the forces behind Jet Streams and high and low pressure systems. {Such as the effect of the gravitational pull of the sun, moon and planets if indeed gravity effects the Jet Stream along with air pressure. I know the gravitational pull of the moon effects the tides, so it might.})

Author Unknown2008-01-03T12:25:18Z

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They're called Rossby waves and are not uncommon to dip that far south in winter. Looking at the weather charts I'd say that it'll be much warmer in Florida in few hours as the cold won't last long. http://www.weatheroffice.gc.ca/data/analysis/saj_100.gif

EDIT: Mikira, the jet stream that is sitting over Florida is the Polar Jet, for the purpose of this discussion it does no more that show the demarcation line where two air masses meet. Those lucky enough to be south of the jet enjoy warm air and those north of the jet freeze. Due to uneven heating and cooling of the earth's surface areas of high and low pressure areas form. Over Canada and Siberia when the lakes freeze cold air from the upper troposphere begins to descend forming large continental high pressure regions and is what makes these two regions so horridly cold in winter. As these highs are formed atmospheric circulation pushes them south forming the bulges in the jet stream called Rossby Waves and the earth's rotation moves them in an easterly direction. If the pressures are high enough, these bulges can push further south than is typical for this time of year bringing cold air as far south as Florida.
So in short, the polar jet in winter forecasting is a handy indicator of synoptic scale weather, but jet streams themselves have little impact on synoptic weather. It’s the air masses they are associated with that bring the weather over large areas. Where these two air masses of cold/dry and warm/moist air air masses meet is often where the snow occcurs
When it comes to climate, jets are a handy indicator of climate change, as we can watch their geographical position over long periods of time. Brief dips into Florida mean nothing. Were I live, we traditionally would spend most of the winter north of the jet, but for the past ten years, our time spent north of the jet has been reduced considerably resulting in warmer winters.

Essentially it is what I was talking about when I posted this http://ca.answers.yahoo.com/question/index;_ylt=AjjcSAiIUpQVzkiuAZLiMAHAFQx.;_ylv=3?qid=20080101225743AASIkzb

Tomcat2008-01-03T12:25:15Z

General Circulation Models (GCM's) are a very rudimentary stab at attempting to model Earths climate. It is an undisputed fact that they lack the sophistication to partition the amount of energy that is associated with the often touted term natural climate variability. The Pacific Decadal Oscillation PDO and the North Atlantic Oscillation NAO play a very important part in distributing heat across latitudes and are linked to many of the climatic changes that we have experienced over the last century. The process of unraveling the natural variation from the human induced climate variation is currently not possible with the methods currently employed.

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Dana19812008-01-03T13:36:00Z

I don't know much about this subject, but it strikes me that if the jet stream has any sort of significant effect on climate change, the pertinent question to ask is what's causing changes in the jet stream over time.

Bob2008-01-03T14:56:11Z

Scientists HAVE studied this. The general view is that the jet streams will shift toward the poles.

This has implications for both temperature and precipitation, for storms tend to occur on the boundary of the jet stream. Here's one good article.

http://www.usatoday.com/weather/climate/2006-05-25-wider-tropics_x.htm