Nav: Home

The Arctic Ocean is becoming more like the Atlantic

April 06, 2017

The eastern Arctic Ocean is becoming more like the Atlantic Ocean, a new study combining remote sensing and local data finds. Whereas the Arctic Ocean typically undergoes very little vertical overturn, the eastern Eurasian Basin of the Arctic is now becoming more active, exhibiting vertical mixing more commonly seen in iceless parts of the Atlantic, the study finds. Over the last decade, the Arctic Ocean has experienced record-breaking losses of sea ice in the summers. Indeed, the eastern Eurasian Basin has been nearly ice-free at the end of summer since 2011. Here, Igor V. Polyakov analyzed satellite estimates of ice thickness in this region collected between 2013 and 2015, as well as data on ocean conditions from this period collected from buoy monitoring systems spread across the Arctic. By comparing this data to previously published work, they found that the eastern part of the Eurasian Basin is evolving a state of weakened stratification (meaning less layer formation, and thus fewer barriers to nutrient mixing), increased vertical mixing and less sea ice. These changes will have substantial impacts on other geophysical and biogeochemical components of the Arctic Ocean system, the authors say, citing enhanced atmosphere-ocean interactions, altered freshwater storage and export patterns, changes to ecosystems, and possibly changes to the ocean's response to acidification.

American Association for the Advancement of Science

Related Sea Ice Articles:

Low sea-ice cover in the Arctic
The sea-ice extent in the Arctic is nearing its annual minimum at the end of the melt season in September.
Arctic sea ice 2019 wintertime extent is seventh lowest
Sea ice in the Arctic appears to have hit its annual maximum extent after growing through the fall and winter.
Study shows algae thrive under Greenland sea ice
Microscopic marine plants flourish beneath the ice that covers the Greenland Sea, according to a new study in the Journal of Geophysical Research: Oceans.
ICESat-2 reveals profile of ice sheets, sea ice, forests
With each pass of the ICESat-2 satellite, the mission is adding to datasets tracking Earth's rapidly changing ice.
Arctic cyclone limits the time-scale of precise sea-ice prediction in Northern Sea Route?
Climate change has accelerated sea-ice retreat in the Arctic Ocean, leading to new opportunities for summer commercial maritime navigation along the Northern Sea Route.
More Sea Ice News and Sea Ice Current Events

Best Science Podcasts 2019

We have hand picked the best science podcasts for 2019. Sit back and enjoy new science podcasts updated daily from your favorite science news services and scientists.
Now Playing: TED Radio Hour

Erasing The Stigma
Many of us either cope with mental illness or know someone who does. But we still have a hard time talking about it. This hour, TED speakers explore ways to push past — and even erase — the stigma. Guests include musician and comedian Jordan Raskopoulos, neuroscientist and psychiatrist Thomas Insel, psychiatrist Dixon Chibanda, anxiety and depression researcher Olivia Remes, and entrepreneur Sangu Delle.
Now Playing: Science for the People

#537 Science Journalism, Hold the Hype
Everyone's seen a piece of science getting over-exaggerated in the media. Most people would be quick to blame journalists and big media for getting in wrong. In many cases, you'd be right. But there's other sources of hype in science journalism. and one of them can be found in the humble, and little-known press release. We're talking with Chris Chambers about doing science about science journalism, and where the hype creeps in. Related links: The association between exaggeration in health related science news and academic press releases: retrospective observational study Claims of causality in health news: a randomised trial This...