Why Sea Ice Grows At One Pole, But Shrinks At The Other

Why Sea Ice Grows At One Pole, But Shrinks At The Other

There have been dramatic, yet differing, changes in sea ice cover at the poles over the past 35 years, according to a new analysis of satellite images.

“The late-summer Arctic sea ice coverage has shrunk by 3 million square kilometers since 1979,” says lead investigator Ian Simmonds, a professor in the School of Earth Sciences at the University of Melbourne.

“There were significant decreases for every month of the year, with the greatest rate of decrease in September. Some are now suggesting that September sea ice could disappear from the Arctic in as little as 25 years,” adds Simmonds.

“In contrast, Antarctic sea ice has been expanding, and 2013 was a record-breaking year. In September, we saw the greatest coverage of sea ice since satellite records started in 1979.”

Overall, however, sea ice around the world is shrinking by about 35,000 square kilometers a year. These dramatic changes are of concern as the polar regions influence global climate patterns.

“It seems counterintuitive, but the growth in the Antarctic sea ice is consistent with global warming and the effects of increased atmospheric carbon dioxide. There is strong evidence to indicate changes in the concentration of greenhouse gases in the atmosphere are leading to region-specific changes in climate,” Simmonds explains.

“The greenhouse effect is strengthening the westerlies over the Southern Ocean and this could be causing the increase in the Antarctic sea ice zone. Ultimately ocean warming will counteract this but it may be a number of years before that takes place.”

The new analysis is detailed in a paper published in the Annals of Glaciology.

Source: University of Melbourne , Original Study

YOU MAY ALSO LIKE

enafarzh-CNzh-TWdanltlfifrdeiwhihuiditjakomsnofaplptruesswsvthtrukurvi

follow InnerSelf on

facebook icontwitter iconyoutube iconinstagram iconpintrest iconrss icon

 Get The Latest By Email

Weekly Magazine Daily Inspiration

EVIDENCE

image
Matt Canavan suggested the cold snap means global warming isn't real. We bust this and 2 other climate myths
by Nerilie Abram, Professor; ARC Future Fellow; Chief Investigator for the ARC Centre of Excellence for Climate Extremes; Deputy Director for the Australian Centre for Excellence in Antarctic Science, Australian National University
Senator Matt Canavan sent many eyeballs rolling yesterday when he tweeted photos of snowy scenes in regional New South…
Ecosystem sentinels sound alarm for the oceans
by Tim Radford
Sea birds are known as ecosystem sentinels, warning of marine loss. As their numbers fall, so could the riches of the…
Why Sea Otters Are Climate Warriors
Why Sea Otters Are Climate Warriors
by Zak Smith
In addition to being one of the cutest animals on the planet, sea otters help maintain healthy, carbon-absorbing kelp…
Methane Bubbles From The Seafloor Hint At Offshore Quakes To Come
Methane Bubbles From The Seafloor Hint At Offshore Quakes To Come
by Hannah Hickey
Methane bubbles that squeeze out of sediment and rise from the seafloor off the coast of Washington provide important…
Why is the Arctic warming faster than other parts of the world?
Why is the Arctic warming faster than other parts of the world?
by Steve Turton, Adjunct Professor of Environmental Geography, CQUniversity Australia
What is Arctic amplification? Do we know what is causing this phenomenon? What effects is it having, both in the region…
bird flies over water
Seabirds are today's canaries in the coal mine – and they're sending us an urgent message
by David Schoeman, Professor of Global-Change Ecology, University of the Sunshine Coast
Just as caged canaries once warned coal miners of the risk of carbon monoxide poisoning, free-flying seabirds are now…
yv27nbnoz3
Why Fires Burning Higher In The Mountains Are A Clear Sign Of Climate Change
by Mojtaba Sadegh, Boise State University et al
The Western U.S. appears headed for another dangerous fire season, and a new study shows that even high mountain areas…
Almost All The World’s Glaciers Are Shrinking—and Fast
Almost All The World’s Glaciers Are Shrinking—and Fast
by Peter Rüegg, ETH Zurich
A new study shows just how fast glaciers have lost thickness and mass over the past two decades.

LATEST VIDEOS

The Great Climate Migration Has Begun
The Great Climate Migration Has Begun
by Super User
The climate crisis is forcing thousands around the world to flee as their homes become increasingly uninhabitable.
The Last Ice Age Tells Us Why We Need To Care About A 2℃ Change In Temperature
The Last Ice Age Tells Us Why We Need To Care About A 2℃ Change In Temperature
by Alan N Williams, et al
The latest report from the Intergovernmental Panel on Climate Change (IPCC) states that without a substantial decrease…
Earth Has Stayed Habitable For Billions Of Years – Exactly How Lucky Did We Get?
Earth Has Stayed Habitable For Billions Of Years – Exactly How Lucky Did We Get?
by Toby Tyrrell
It took evolution 3 or 4 billion years to produce Homo sapiens. If the climate had completely failed just once in that…
How Mapping The Weather 12,000 Years Ago Can Help Predict Future Climate Change
How Mapping The Weather 12,000 Years Ago Can Help Predict Future Climate Change
by Brice Rea
The end of the last ice age, around 12,000 years ago, was characterised by a final cold phase called the Younger Dryas.…
The Caspian Sea Is Set To Fall By 9 Metres Or More This Century
The Caspian Sea Is Set To Fall By 9 Metres Or More This Century
by Frank Wesselingh and Matteo Lattuada
Imagine you are on the coast, looking out to sea. In front of you lies 100 metres of barren sand that looks like a…
Venus Was Once More Earth-like, But Climate Change Made It Uninhabitable
Venus Was Once More Earth-like, But Climate Change Made It Uninhabitable
by Richard Ernst
We can learn a lot about climate change from Venus, our sister planet. Venus currently has a surface temperature of…
Five Climate Disbeliefs: A Crash Course In Climate Misinformation
The Five Climate Disbeliefs: A Crash Course In Climate Misinformation
by John Cook
This video is a crash course in climate misinformation, summarizing the key arguments used to cast doubt on the reality…
The Arctic Hasn't Been This Warm For 3 Million Years and That Means Big Changes For The Planet
The Arctic Hasn't Been This Warm For 3 Million Years and That Means Big Changes For The Planet
by Julie Brigham-Grette and Steve Petsch
Every year, sea ice cover in the Arctic Ocean shrinks to a low point in mid-September. This year it measures just 1.44…

LATEST ARTICLES

image
Why the UK is so unprepared for the impacts of climate change
by Liam F. Beiser-McGrath, Lecturer (Assistant Professor) in Politics and Director of the PECC Lab, Royal Holloway University of London
The UK is woefully unprepared for the dangers of climate change according to a report from the Climate Change Committee…
Rows of solar panels are separated by a walkable space between them
Solar power and energy storage combo boosts reliability
by Matt Shipman-NC State
New research shows that when a power system combines energy storage and solar power generation, the end result is…
Climate change: what G7 leaders could have said – but didn't
Climate change: what G7 leaders could have said – but didn't
by Myles Allen, Professor of Geosystem Science, Director of Oxford Net Zero, University of Oxford
The four-day G7 summit in Cornwall ended with little cause for celebration from anyone worried about climate change.…
How world leaders' high-carbon travel choices could delay climate action
How world leaders' high-carbon travel choices could delay climate action
by Steve Westlake, PhD Candidate, Environmental Leadership, Cardiff University
When UK prime minister Boris Johnson took a one-hour flight to Cornwall for the G7 summit, he was criticised for being…
Maggot burgers can help to solve world hunger
by Paul Brown
Fancy maggot burgers for dinner? Eating animals and plants which revolt many of us could cut hunger caused by climate…
The idea of green growth'is flawed. We must find ways of using and wasting less energy
by Michael (Mike) Joy, Senior Researcher; Institute for Governance and Policy Studies, Te Herenga Waka — Victoria University of Wellington
As countries explore ways of decarbonising their economies, the mantra of “green growth” risks trapping us in a spiral…
Four reasons why G7 climate finance initiative will struggle against China's Belt and Road
Four reasons why G7 climate finance initiative will struggle against China's Belt and Road
by Karen Jackson, Senior Lecturer in Economics, University of Westminster
During the G7 summit in Cornwall, the group of nations unveiled a global initiative to help low and middle-income…
image
Electric heat pumps use much less energy than furnaces, and can cool houses too – here's how they work
by Robert Brecha, Professor of Sustainability, University of Dayton
To help curb climate change, President Biden has set a goal of lowering U.S. greenhouse gas emissions 50%-52% below…

 Get The Latest By Email

Weekly Magazine Daily Inspiration

New Attitudes - New Possibilities

InnerSelf.comClimateImpactNews.com | InnerPower.net
MightyNatural.com | WholisticPolitics.com | InnerSelf Market
Copyright ©1985 - 2021 InnerSelf Publications. All Rights Reserved.