Arctic & Antarctic - page 2

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Strong ozone depletion expected over Arctic in the coming weeks

POLSTRAC campaign initiated by the Karlsruhe Institute of Technology (KIT) was actively engaged in measurements in Arctic since the end of 2015. The research team has observed vertically extended polar stratospheric clouds, in unusually low regions of the...

February 18, 2016

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New class of atmospheric waves, producing strong temperature ripples, discovered over Antarctica

Researchers from the University of Colorado Boulder discovered a new class of mesospheric waves by observing the high parts of the atmosphere over Antarctica. These waves seem to send constant ripples through the Earth's atmosphere and probably affect high-level...

January 20, 2016

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Seismic maps of the Earth's mantle beneath Antarctica provide first glimpse into underlying geology

A series of robust seismometers have been deployed in Antarctica to map the geology hidden underneath the vast ice sheets. For the first time, they have been successful in recording reverberations of distant earthquakes in the period between January 2010 and 2012...

December 10, 2015

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Parallel flights in the Arctic and Antarctic collect data on the land and sea ice status

An airborne survey of polar ice, NASA's operation named IceBridge, has recently discovered a big drop in the height of two glaciers in the Antarctic Peninsula and collected a large amount of data on the status of land and sea ice at the end of the Arctic summer...

November 25, 2015

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NASA study claims Antarctica gains ice, not contributing to sea level rise

A new study led by NASA's glaciologists Jay Zwally, says that an increase in Antarctic snow accumulation that began 10 000 years ago is currently adding enough ice to the continent to outweigh the increased losses from its thinning glaciers. The research...

November 02, 2015

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The 2015 ozone hole over Antarctic larger than usual and late

The annual Antarctic ozone hole was larger than usual this year and formed later than in recent years, according to the scientists from NASA and the National Oceanic and Atmospheric Administration (NOAA). The ozone hole reached its maximum on October 2, 2015,...

October 31, 2015

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2015 maximum sea ice cover lowest recorded since 2008

The sea ice cover of the Southern Ocean reached its yearly maximum extent on October 6, 2015. Sea ice cover at its maximum has spread across the area of 18.83 million square kilometers (7.27 million square miles), which puts it both on the 22nd lowest and 16th...

October 16, 2015

greenland_feat

Water flow paths from Greenland's subglacial lake revealed

A research team led by Dr. Steven Palmer from the University of Exeter has studied the water flow paths from a subglacial lake under the Greenland ice, and discovered that water was drained from the lake through a subglacial tunnel. The study also revealed that a...

October 09, 2015

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2015 Arctic sea ice minimum extent fourth lowest on record

Satellite data show the Arctic sea ice minimum extent of the year 2015 is the fourth lowest recorded since the beginning of the observations from space.Researchers from NASA and the National Snow and Ice Data Center (NSIDC) at the University of Colorado at Boulder have

September 16, 2015

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Researchers find surprisingly high geothermal heating beneath West Antarctic Ice Sheet

According to a new study led by researchers at the University of California (US), Sanza Cruz have found that the amount of heat flowing toward the base of the West Antarctic Ice Sheet from geothermal sources deep within the Earth is surprisingly high.The results of the

July 13, 2015

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Study shows Antarctic ice shelf is thinning from above and below

A decade-long scientific debate about what’s causing the thinning of one of Antarctica’s largest ice shelves has now been settled, European Geosciences Union (EGU) reports. The Larsen C Ice Shelf – whose neighbours Larsen A and B collapsed in 1995 and

May 14, 2015

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Discovered deep under Antarctic surface: Extensive, salty aquifer and potentially vast microbial habitat

Using a novel, helicopter-borne sensor to penetrate the surface of large swathes of terrain, a team of researchers supported by the National Science Foundation (NSF) has gathered compelling evidence that beneath Antarctica's ice-free McMurdo Dry Valleys lies a salty

April 30, 2015

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Strange behavior of Antarctic noctilucent clouds

The southern noctilucent clouds (NLCs) season is over now, but looking back over the entire season reveals something unexpected.In an 8-year plot of the Antarctic noctilucent cloud frequencies, the 2014/15 season is clearly different from the rest, SpaceWeather reports.

March 02, 2015

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South Pole Ice Core project - digging 40 000 years into climate history of South Pole

South Pole Ice Core (SPICE) project is a joint effort by researchers from the University of Washington and the University of California, Irvine to 'dig' 40 000 years into climate history at the planet's southernmost tip. The ice core will be drilled to a dep

January 22, 2015

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Satellites measure increase of Sun’s energy absorbed in the Arctic

NASA satellite instruments have observed a marked increase in solar radiation absorbed in the Arctic since the year 2000 – a trend that aligns with the steady decrease in Arctic sea ice during the same period.While sea ice is mostly white and reflects the sun&rsqu

December 17, 2014

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Antarctic sea ice grows to all-time record high

While we are seeing decline of Arctic sea ice, Antarctic sea ice hit its annual winter maximum on September 22, 2014 reaching a record area of 20.11 million square kilometers (7.76 million square miles). The National Snow and Ice Data Center (NSIDC) announced on

October 09, 2014

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Study suggests current changes in the ocean around Antarctica could trigger steep rise in sea levels

A new study suggests that current conditions in the ocean around Antarctica​ could led to the rapid melting of Antarctic ice and an abrupt 3-4 meter rise in global sea level. Warming in parts of Antarctica is causing land-based ice to melt, adding massive amounts of

October 06, 2014