" />
Building a world of
resilient communities.

MAIN LIST

 

Loss of Arctic ice leaves experts stunned

The Arctic ice cap has collapsed at an unprecedented rate this summer and levels of sea ice in the region now stand at record lows, scientists have announced.

Experts say they are "stunned" by the loss of ice, with an area almost twice as big as the UK disappearing in the last week alone.

So much ice has melted this summer that the Northwest passage across the top of Canada is fully navigable, and observers say the Northeast passage along Russia's Arctic coast could open later this month.

If the increased rate of melting continues, the summertime Arctic could be totally free of ice by 2030.

Mark Serreze, an Arctic specialist at the US National Snow and Ice Data Centre at Colorado University in Denver, said: "It's amazing. It's simply fallen off a cliff and we're still losing ice."

The Arctic has now lost about a third of its ice since satellite measurements began thirty years ago, and the rate of loss has accelerated sharply since 2002.

Dr Serreze said: "If you asked me a couple of years ago when the Arctic could lose all of its ice then I would have said 2100, or 2070 maybe. But now I think that 2030 is a reasonable estimate. It seems that the Arctic is going to be a very different place within our lifetimes, and certainly within our childrens' lifetimes."

The new figures show that sea ice extent is currently down to 4.4m square kilometres (1.7m square miles) and still falling.

The previous record low was 5.3m square kilometres in September 2005. From 1979 to 2000 the average sea ice extent was 7.7m square kilometres.

The sea ice usually melts in the Arctic summer and freezes again in the winter. But Dr Serreze said that would be difficult this year.

"This summer we've got all this open water and added heat going into the ocean. That is going to make it much harder for the ice to grow back."

Changes in wind and ocean circulation patterns can help reduce sea ice extent, but Dr Serreze said the main culprit was man-made global warming.

"The rules are starting to change and what's changing the rules is the input of greenhouse gases."

Editorial Notes: Submitted by David Emanuel. (UPDATE) Pointing to a similar article, contributor Sean Byrne writes: This seems to prove that NASA's James Hansen may be right in his argument (based geological records) that polar ice does not melt in a gradual and linear fashion, but flips suddenly from one state to another.

What do you think? Leave a comment below.

Sign up for regular Resilience bulletins direct to your email.

Take action!  

Find out more about Community Resilience. See our COMMUNITIES page
Start your own projects. See our RESOURCES page.
Help build resilience. DONATE NOW.

 

This is a community site and the discussion is moderated. The rules in brief: no personal abuse and no climate denial. Complete Guidelines.


Crisis, Opportunity and Climate Austerity in Drought-Stricken California

In the midst of a severe drought, California Gov. Jerry Brown has enacted …

Harvard Students Expand Blockade Calling for School to Divest from Fossil Fuels

Students at Harvard University have expanded their blockade of key …

With Too Much of a Good Thing, Europe Tackles Excess Nitrogen

In Germany, the Netherlands, Denmark and other countries, European …

Don't Go With the Flow, Go With the Wax

It's time we stop perpetuating the status quo of unhealthy, mechanistic …

Can Flooding Be Prevented by Rebuilding the Soil?

The floodplain does the job that ecology might expect it to, which is to …

The Ground Rules

Meet “renegade researcher” Nancy Klehm. She’s on a mission …

Maryland Passes 2.5 Year Fracking Ban

Today, the Maryland House of Delegates passed legislation, voting 102 …