Arctic ice shrinks to all-time low; global warming cited as the cause

2012-09-20T00:00:00Z Arctic ice shrinks to all-time low; global warming cited as the causeThe Associated Press The Associated Press
September 20, 2012 12:00 am  • 

WASHINGTON - In a critical climate indicator showing an ever warming world, the amount of ice in the Arctic Ocean shrank to an all-time low this year, obliterating old records.

The ice cap at the North Pole measured 1.32 million square miles on Sunday. That's 18 percent smaller than the previous record of 1.61 million square miles set in 2007, according to the National Snow and Ice Data Center in Boulder, Colo. Records go back to 1979 based on satellite tracking.

"On top of that, we're smashing a record that smashed a record," said data center scientist Walt Meier. Sea ice shrank in 2007 to levels 22 percent below the previous record of 2005.

Ice in the Arctic melts in summer and grows in winter, and it started growing again on Monday. In the 1980s, Meier said, summer sea ice would cover an area slightly smaller than the Lower 48 states. Now it is about half that.

Man-made global warming has melted more sea ice and made it thinner over the last couple decades with it getting much more extreme this year, surprisingly so, said snow and ice data center director Mark Serreze.

"Recently the loss of summer ice has accelerated and the six lowest September ice extents have all been in the past six years," Serreze said.

Serreze said except for one strong storm that contributed to the ice loss, this summer melt was more from the steady effects of day-to-day global warming. But he and others say the polar regions are where the globe first sees the signs of climate change.

"Arctic sea ice is one of the most sensitive of nature's thermometers," said Jason Box, an Ohio State University polar researcher.

The ice in the Arctic "essentially acts like an air conditioner by keeping things cooler," Meier said.

Online

The National Snow and Ice Data Center: nsidc.org

Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Activate

Most Popular

Get weekly ads via e-mail

Follow the Arizona Daily Star

Featured businesses

View more...

Deals, offers & events

View more...

We provide safe and secure storage services at a budget friendly rate.

We provide storage space in our warehouse and distribution fac…

Drive new customers to your website

Maximize your exposure with FREE registration on the top search engines:

google bing yahoo

Fill out this form and get started today.

First Name:
Last Name:
Phone:
E-mail Address:
Website:
arizona daily star
Search Local Businesses:
Popular Searches