Member Highlight: Alien Waters: Neighboring Seas Are Flowing into a Warming Arctic Ocean

2018-05-14T14:17:29+00:00 May 14, 2018|

(Credit: Pablo Clemente-Colon / National Ice Center) Above Scandinavia, on the Atlantic side of the Arctic Ocean, mackerel, cod, and other fish native to the European coast are migrating through increasingly ice-free waters, heading deeper into the Arctic Basin toward Siberia. . (From Yale Environment 360/ By Cheryl Katz) -- Thousands of miles to the west, [...]

Member Highlight: Study Reveals New Antarctic Process Contributing To Sea Level Rise And Climate Change

2018-04-20T17:04:13+00:00 April 20, 2018|

(Credit: Alessandro Silvano) A new IMAS-led study has revealed a previously undocumented process where melting glacial ice sheets change the ocean in a way that further accelerates the rate of ice melt and sea level rise. (From Phys.org) -- Led by IMAS PhD student Alessandro Silvano and published in the journal Science Advances, the [...]

Member Highlight: Ice Cores Show Greenland’s Melting Is Unprecedented In At Least Four Centuries

2018-04-02T11:35:51+00:00 March 30, 2018|

(Credit: Forrest McCarthy) Scientists who crossed western Greenland with a fleet of snowmobiles, pulling up long cylinders of ice at camps a little more than a mile above sea level, have found evidence that the vast sheet of ice is melting faster than at any time in the past 450 years at least — and possibly much longer than that. [...]

Unusual Weather Accelerates Arctic Sea Ice Loss

2018-01-18T17:56:12+00:00 January 18, 2018|

(Credit: NASA/Goddard Space Flight Center) New research suggests weather anomalies are to blame for intense periods of accelerating Arctic sea ice loss. (From UPI/ By Brooks Hays) -- While research has confirmed links between global warming, rising Arctic temperatures and ongoing sea ice loss, variability remains. A pair of new studies conducted [...]

El Nino’s Long Reach To Antarctic Ice

2018-01-16T10:06:42+00:00 January 16, 2018|

Antarctica may be thousands of kilometres from the central Pacific but events there can have a significant effect on the White Continent's ice. (From BBC News/ By Jonathan Amos) -- Scientists have shown how ice shelves - the floating fronts of marine-terminating glaciers - respond to the El Niño phenomenon. The warming of tropical eastern [...]

Watchdog: Pentagon Taking Few Steps To Prepare Overseas Bases For Climate Change

2017-12-15T13:16:38+00:00 December 15, 2017|

The Pentagon has taken few steps to prepare its overseas installations for climate change, a government watchdog said Wednesday. (From The Hill/ By Rebecca Kheel) -- “While the military services have begun to integrate climate change adaptation into installations’ plans and project designs, this integration has been limited,” the Government Accountability Office (GAO) said in a report [...]

Extreme Fieldwork, Climate Modeling Yields New Insight Into Predicting Greenland’s Melt

2017-12-12T12:37:33+00:00 December 12, 2017|

Greenland (Credit: Matthew Cooper) A new UCLA-led study reinforces the importance of collaboration in assessing the effects of climate change. The research, published Dec. 5 in the journal Proceedings of the National Academy of Sciences, offers new insights about previously unknown factors affecting Greenland's melting ice sheet, and it could ultimately help scientists [...]

Future Arctic Sea Ice Loss Could Dry Out California

2017-12-07T12:24:48+00:00 December 7, 2017|

(Credit: Graphic by Kathy Seibert/LLNL) Arctic sea ice loss of the magnitude expected in the next few decades could impact California's rainfall and exacerbate future droughts, according to new research led by Lawrence Livermore National Laboratory (LLNL) scientists. (From Science Daily)-- The dramatic loss of Arctic sea ice cover observed over the satellite [...]

Satellites Spy Antarctic ‘Upside-Down Ice Canyon’

2017-10-11T16:45:52+00:00 October 11, 2017|

Scientists have identified a way in which the effects of Antarctic melting can be enhanced. Their new satellite observations of the Dotson Ice Shelf show its losses, far from being even, are actually focused on a long, narrow sector. In places, this has cut an inverted canyon through more than half the thickness of the shelf structure. If the melting continued unabated, it would break Dotson in 40-50 years, not the 200 years currently projected. "That is unlikely to happen because the ice will respond in some way to the imbalance," said Noel Gourmelen, from the University of Edinburgh, UK. "It's possible the area of thinning could widen or the flow of ice could change. Both would affect the rate at which the channel forms. But ...

Big Antarctic Iceberg Edges Out To Sea

2017-09-26T17:57:33+00:00 September 26, 2017|

The giant berg A-68 looks finally to be on the move. Recent weeks have seen it shuffle back and forth next to the Antarctic ice shelf from which it broke away. But the latest satellite imagery now indicates the near-6,000 sq km block is swinging out into the Weddell Sea.

Now We Know How Much Glacial Melting ‘Watermelon Snow’ Can Cause

2017-09-25T17:14:20+00:00 September 25, 2017|

Algae that tinge snow red are to blame for about a sixth of the snowmelt at an Alaskan ice field. Microbes are pushing glacial snow into the red. An alga species that grows on glaciers gives the snow a crimson hue, which increases the amount of sunlight that the snow soaks up and makes it melt faster, new measurements confirm. On Alaska’s Harding Icefield, these microbes are responsible for about a sixth of the snowmelt in algae-tinged areas, researchers report September 18 in Nature Geoscience. The finding suggests that future climate simulations, unlike current ones, should account for the effects of these algae when making predictions about glacial melt.

Satellites Measuring Earth’s Melting Ice Sheets To Go Dark

2017-09-20T09:05:25+00:00 September 20, 2017|

A sentinel of Earth’s climate is going dark. After running for a decade beyond its planned life, the Gravity Recovery and Climate Experiment (GRACE) is nearly out of fuel and will soon make its final science run, NASA announced late yesterday. The tandem of satellites—called GRACE-1 and GRACE-2—measure minute shifts in Earth’s gravity to chart flows of mass across the planet, such as the unexpectedly rapid melt of polar ice sheets and the drawdown of underground water reservoirs called aquifers.

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