Rapid Arctic warming has in the past shifted Southern Ocean winds

ScienceDaily | 1/10/2017 | Staff
Click For Photo: https://images.sciencedaily.com/2017/01/170110101622_1_540x360.jpg

A dramatic pattern in our planet's climate history involves paroxysms in Arctic temperatures. During the last ice age, tens of thousands of years ago, Greenland repeatedly warmed by about 10 degrees Celsius over just a few decades and then gradually cooled. Meanwhile the Southern Hemisphere climate stayed fairly stable, with only weak and long-delayed echoes of the temperature chaos up north.

But new University of Washington research shows the fierce winds circling Antarctica -- an important lever on the global climate -- shifted quickly in response to the Northern Hemisphere temperature spikes.

Changes - Northern - Hemisphere - Southern - Hemisphere

"It's most surprising that we can see these really abrupt changes in the Northern Hemisphere making it very quickly to the Southern Hemisphere," said first author Bradley Markle, a UW doctoral student in Earth and space sciences. "The atmospheric circulation is tightly connected across the globe during these events."

The study is published in the January issue of Nature Geoscience.

Researchers - Evidence - West - Antarctic - Ice

Researchers used evidence from a 2-mile-long West Antarctic ice core. That ice core's thick annual layers provide precise dating that allows scientists to match its climate history with those in distant Greenland ice records. The wild northern temperature swings, known as Dansgaard-Oeschger events, are thought to be natural oscillations in the climate system. They have been reproduced in the most sophisticated climate models covering the ice age period. These same models also show a shift in Southern Hemisphere winds.

The new study is the observational support for this shift in the winds.

Antarctic - Ice - Core - Southern - Ocean

The Antarctic ice core shows that Southern Ocean winds shifted at the same time, or at most within a few decades, of each rapid Greenland warming event. Antarctic air temperatures, on the other hand, are connected through the slower-moving oceans and took about two centuries to respond.

"We'd never found anything in our ice cores before that show the Southern Hemisphere responding so...
(Excerpt) Read more at: ScienceDaily
Wake Up To Breaking News!
Governemnt sponsored segratation of America, one household at a time.
Tagged:
Sign In or Register to comment.

Welcome to Long Room!

Give Us 5 Minutes, We'll Give You The World!

LongRoom Culture
Turkeys Endlessly Circling a Tree! Here we go 'round the mulberry tree... These turkeys are evenly spaced following each other...
Inverted Aquarium Set Into Pond, The Fish Love it! This is the greatest thing for both people who want to look at fish in a...
Dog Makes Snow Angel With Owner! This dog sees its owner making a snow angel and gets all excited about trying it, too!  
Amazing Pool Shot That Spans Ten Tables. This video recorded at AllStars Sports Bar, Bristol, UK, is an amazing feat that...
Huge Alligator Walks Across Visitor's Path In Nature Preserve! This massive alligator was taped walking across the path of...
The Ghost of Eva Gray Seen By Paranormal Investigators In Theater Where She Died At 33 of a Heart Attack In Early 1900's!
Avalanche Safety Backpack Saves Snowboarder's Life When He Gets Caught in Avalanche! The language is understandably a bit rough...
Little Boy and His Dog Wake Up, Come Downstairs and Have Breakfast Together! This adorable video shows a little boy and his dog...
Samsung India's Touching Ad Has Been Viewed Over 37 Million Times And Has People Talking! This ad for Samsung India needs to be...
Newton's Cradle With Changing Colored LED Lights! This device which demonstrates Newton's law of conservation of momentum and...
The Quick Brown Fox Kinda Jumps Over The Lazy Dog! The cute fox definitely looks like it has jumped over this lazy dog before.
Who Needs A Ski Slope, When Any Ol' Hill Will Do? Great snow boarding course down a city street!  This makes for a great trip...
Fish Release To Restock Lake! Geronimo!!  This is definitely a great way to introduce fish to their new home!  They get a...
Freezing A Soap Bubble In REALLY Cold Weather! The patterns forming on this bubble are magical!  It creates an image similar to...
Sometimes When The Winter Starts To Get Boring, You Just Have To Come Up With Something New This guy cut a circle in the ice...
Frozen Soap Bubble Explodes!  With all the cold weather around the country, you can probably try this at home! The soap bubble...
Falcon's Eye View! Exciting footage of a falcon's perspective flying next to a cliff.  I'm wondering how the person got the...
Is It Considered Stealing If You're This Cute? This squirrel knows just where to go to get its favorite candy!    It looks like...
Roll Over, Orca! This charming video shows an orca rolling over in the water in response to a command from this person.
Will The Real Cat Please Come Down? Just glancing at this picture isn't enough to distinguish the real cat from amongst the...
You Don't See This Everyday! This roll of cable gets to choose it's path down the highway.  On the wrong side and against...
Hold Still, Will You??!! Trying to get a picture of the elusive Tree Hugger!  This critter remains just out of view of the...
Awesome Miniature Train! This may be Train Mountain in Chiloquin, Oregon.  Regardless, it is an epic train and an amazing piece...
Big Clingy Kitty Hug! This kitty is not letting go once it has its owner's arm wrapped in a big kitty hug!  
This Runaway Lorry Could Have Ended In A Disaster If It Hadn't Been For The Quick Thinking of This Hero!
Ahhhh!!!! Deadly Black Snake Emerges From Under Hood of Car! Driver Pulls Over Terrified! This is a moment when you absolutely...
Comedien Tal Solomon Records His Adorable Dog Snoring, Then Confronts Him With The Evidence! This Cavalier King Charles Spaniel...
What Is Going On Here? So which end is up in this room?  You can get a clue from the stairs and the view outside the window, or...
Helicopter Landing on a Ship in a Storm! Watching what a helicopter pilot is dealing with on landing on this moving ship makes...