Welcome to DU!
The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards.
Join the community:
Create a free account
Support DU (and get rid of ads!):
Become a Star Member
Latest Breaking News
General Discussion
The DU Lounge
All Forums
Issue Forums
Culture Forums
Alliance Forums
Region Forums
Support Forums
Help & Search
General Discussion
Related: Editorials & Other Articles, Issue Forums, Alliance Forums, Region ForumsJet Stream So Weak Winds Are Running From Pacific to Atlantic Across the North Pole
http://robertscribbler.wordpress.com/2014/07/30/jet-stream-so-weak-winds-are-running-from-pacific-to-atlantic-across-the-north-pole/(Winds flowing north from just west of Hawaii, through the Bering Strait, over the North Pole and on into the North Atlantic as seen by NOAAs GFS model and imaged by Earth Nullschool.)
This is a very odd pattern for global surface winds.
In the central Pacific, along a band above 20 North Latitude and about 500 miles west of Hawaii, a broad stream of easterly winds yesterday took a turn toward the north. The wind field was then pulled into a long frontal boundary spinning out from a large low pressure system off Irkutsk, Russian and driven on toward the Western Aleutian Island Chain.
The winds continued their sprint northward through the Bering Strait before being again captured by a low, this time over the East Siberian Sea. Sped on by this second nudge, the winds, running at 15-25 mph, spilled over the North Pole and into a third low spinning just north of Svalbard. This system shoved the winds southward over the North Atlantic and finally into a cyclone just north of England where the winds finally turned eastward, returning to the prevailing west-east global flow.
This is an epic journey in defiance of typical and prevailing weather patterns spanning thousands of miles and three oceans. It is decidedly not normal.
A Ruptured Jet Stream and A Flood of Winds Across the Pole
Typically, cold air over the polar region will insulate the Arctic from these kinds of circumpolar flows. The cold air to the north, warm air to the south, drives winds faster around the pole, creating a kind of wind wall that keeps south-north flows out of the Arctic. It is a pattern that tends to isolate Arctic air from the rest of the global air circulation to the south.
(Mostly disassociated Jet Stream with large rupture running north through the Bering Strait and on over the polar zone. Image source: University of Maine.)
..more..
InfoView thread info, including edit history
TrashPut this thread in your Trash Can (My DU » Trash Can)
BookmarkAdd this thread to your Bookmarks (My DU » Bookmarks)
7 replies, 1930 views
ShareGet links to this post and/or share on social media
AlertAlert this post for a rule violation
PowersThere are no powers you can use on this post
EditCannot edit other people's posts
ReplyReply to this post
EditCannot edit other people's posts
Rec (30)
ReplyReply to this post
7 replies
= new reply since forum marked as read
Highlight:
NoneDon't highlight anything
5 newestHighlight 5 most recent replies
Jet Stream So Weak Winds Are Running From Pacific to Atlantic Across the North Pole (Original Post)
G_j
Aug 2014
OP
4139
(1,893 posts)2. Nothing unusual....
The first image he gave was ground level winds; right now there are a collection of high pressure system which spin clockwise, and low pressure systems that spin counter clockwise...and when there are a groups of highs and lows it make for interesting wind patterns. Nothing unusual.
Here's a link for arctic weather and forecast maps... Cool site!
http://www.weather-forecast.com/maps/Arctic?symbols=none&type=prec
4139
(1,893 posts)5. Oh, the winds do move the ice around...
Tomorrow's arctic ice 'drift and speed' forecast:
packman
(16,296 posts)3. This can't be good
Octafish
(55,745 posts)4. Thanks for the heads-up, G_j.
Things going kaput is normal. Nature going haywire is another. And it's not good.
SammyWinstonJack
(44,130 posts)6. K&R
Trillo
(9,154 posts)7. Are there any correlations to magnetic anomolies? NT