Snow and Avalanches

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  • Widespread snowmelt in West Antarctica during unusually warm summer
    on June 15, 2017 at 12:46 pm

    An area of West Antarctica more than twice the size of California partially melted in 2016 when warm winds forced by an especially strong El Nino blew over the continent. […]

  • Domes of frozen methane may be warning signs for new blow-outs
    on June 5, 2017 at 7:19 pm

    Several methane domes, some 500m wide, have been mapped on the Arctic Ocean floor. They may be signs of soon-to-happen methane expulsions that have previously created massive craters in a near-by area. […]

  • Antarctic ice rift close to calving, after growing 17km in 6 days, latest data from ice shelf shows
    on June 2, 2017 at 3:28 pm

    The rift in the Larsen C ice shelf in Antarctica has grown by 17km in the last few days and is now only 13km from the ice front, indicating that calving of an iceberg is probably very close, researchers revealed after studying satellite data. The rift is likely to lead to one of the largest icebergs ever recorded. […]

  • Massive craters formed by methane blow-outs from the Arctic sea floor
    on June 1, 2017 at 7:18 pm

    Hundreds of massive, kilometer-wide craters on the ocean floor in the Arctic were formed by substantial methane expulsions, new research explains. […]

  • Geoscientific evidence for subglacial lakes
    on June 1, 2017 at 12:22 pm

    During the last glacial period -- when the ice in the Antarctic was far thicker and extended further offshore than it does today -- it has been speculated that subglacial lakes existed beneath it. An international team of researchers has now successfully sampled the meter-thick sediment layers left behind by these lakes contemporary on the seafloor. […]

  • Are wolverines in the Arctic in the climate change crosshairs?
    on May 24, 2017 at 5:11 pm

    Will reductions in Arctic snow cover make tundra-dwelling wolverines more vulnerable to climate change than previously thought? That's a question scientists hope an innovative method described in a new study will help answer. […]

  • Saying goodbye to glaciers
    on May 11, 2017 at 6:19 pm

    Glaciers around the world are disappearing before our eyes, and the implications for people are wide-ranging and troubling, a glacier expert concludes in a new study. […]

  • Teleconnection between the tropical Pacific and Antarctica
    on May 11, 2017 at 1:50 pm

    The higher the seawater temperature in the tropical Pacific, the more likely ice breakup will occur in East Antarctica, according to researchers. […]

  • Irreversible ocean warming threatens the Filchner-Ronne Ice Shelf
    on May 11, 2017 at 1:50 pm

    By the second half of this century, rising air temperatures above the Weddell Sea could set off a self-amplifying meltwater feedback cycle under the Filchner-Ronne Ice Shelf, ultimately causing the second-largest ice shelf in the Antarctic to shrink dramatically. […]

  • Glaciers rapidly shrinking and disappearing: 50 years of glacier change in Montana
    on May 10, 2017 at 5:19 pm

    The warming climate has dramatically reduced the size of 39 glaciers in Montana since 1966, some by as much as 85 percent. On average, the glaciers have reduced by 39 percent and only 26 glaciers are now larger than 25 acres, which is used as a guideline for deciding if bodies of ice are large enough to be considered glaciers. […]

  • Oversized landforms discovered beneath the Antarctic ice sheet
    on May 9, 2017 at 1:35 pm

    Scientists have now discovered an active hydrological system of water conduits and sediment ridges below the Antarctic ice sheet. […]

  • Growth of East Antarctic Ice Sheet was less than previously suggested
    on May 5, 2017 at 2:36 pm

    Scientists have known for over a decade that the West Antarctic Ice Sheet has been losing mass and contributing to sea level rise. […]

  • Antarctic study shows central ice sheet is stable since milder times
    on May 5, 2017 at 2:36 pm

    Central parts of Antarctica's ice sheet have been stable for millions of years, from a time when conditions were considerably warmer than now, research suggests. […]

  • Snow in Hawai'i: What does the future hold?
    on May 4, 2017 at 8:15 pm

    Researchers, led by climate modelers, used satellite images to quantify recent snow cover distributions patterns on Mauna Kea and Mauna Loa, Hawai'i. They developed a regional climate model to simulate the present-day snowfalls and then to project future Hawaiian snowfalls. Their results indicate that the two volcano summits are typically snow-covered at least 20 days each winter, but that the snow cover will nearly disappear by the end of the century. […]

  • Climate instability over the past 720,000 years
    on May 2, 2017 at 1:51 pm

    A new analysis of an ice core from Dome Fuji in Antarctica, along with climate simulation results, shows a high degree of climate instability (that is, rapid climate fluctuations) within glacial periods with intermediate temperatures. This instability was attributed primarily to global cooling caused by a reduced greenhouse effect. […]

  • Antarctic ice rift spreads
    on May 2, 2017 at 1:51 pm

    The rift in the Larsen C ice shelf in Antarctica now has a second branch, which is moving in the direction of the ice front, researchers revealed after studying the latest satellite data. The main rift in Larsen C, which is likely to lead to one of the largest icebergs ever recorded, is currently 180 km long. The new branch of the rift is 15 km long. […]

  • Antarctic Peninsula ice more stable than thought
    on May 2, 2017 at 12:40 pm

    Glacier flow at the southern Antarctic Peninsula has increased since the 1990s, but a new study has found the change to be only a third of what was recently reported. […]

  • Norway's oldest ice found in central Norway
    on May 1, 2017 at 1:47 pm

    Parts of the ice of the Juvfonne snow patch in Jotunheimen are 7600 years old, which makes it the oldest dated ice on mainland Norway. […]

  • Ice cave in Transylvania yields window into region's past
    on April 27, 2017 at 5:08 pm

    Ice cores drilled from a glacier in a cave in Transylvania offer new evidence of how Europe's winter weather and climate patterns fluctuated during the last 10,000 years, known as the Holocene period. […]

  • Century-old mystery of Blood Falls solved
    on April 25, 2017 at 1:23 pm

    A century-old mystery involving a famous red waterfall in Antarctica has now been solved by researchers. New evidence links Blood Falls to a large source of salty water that may have been trapped under Taylor Glacier for more than 1 million years. […]

  • New atlas provides highest-resolution imagery of the Polar Regions seafloor
    on April 25, 2017 at 1:23 pm

    Scientists have created the most comprehensive and high-resolution atlas of the seafloor of both Polar Regions. […]

  • Warm winds: New insight into what weakens Antarctic ice shelves
    on April 25, 2017 at 1:23 pm

    New research describes for the first time the role that warm, dry winds play in influencing the behavior of Antarctic ice shelves. […]

  • Climate change clues revealed by ice sheet collapse
    on April 24, 2017 at 1:39 pm

    The rapid decline of ancient ice sheets could help scientists predict the impact of modern-day climate and sea-level change, according to new research. […]

  • Water is streaming across Antarctica
    on April 19, 2017 at 5:17 pm

    In the first such continent-wide survey, scientists have found extensive drainages of meltwater flowing over parts of Antarctica's ice during the brief summer. […]

  • In new paper, scientists explain climate change using before/after photographic evidence
    on April 19, 2017 at 4:20 pm

    A group of scientists offers photographic proof of climate change using images of retreating glaciers. […]

  • Can barnacle geese predict the climate?
    on April 18, 2017 at 10:17 pm

    The breeding grounds of Arctic migratory birds such as the barnacle goose are changing rapidly due to accelerated warming in the polar regions. They won't be able to keep up with this climate change unless they can somehow anticipate it. A research team employed computer models to assess the future of the geese and their young. […]

  • Study on impact of climate change on snowpack loss in Western U.S.
    on April 18, 2017 at 3:43 pm

    There has been up to 20 percent loss in the annual maximum amount of water contained in the Western United States' mountain snowpack in the last three decades is due to human influences, an international team of scientists has found. […]

  • Glacier shape influences susceptibility to thinning
    on April 17, 2017 at 3:48 pm

    Researchers have identified glaciers in West Greenland that are most susceptible to thinning in the coming decades by analyzing how they're shaped. The research could help predict how much the Greenland Ice Sheet will contribute to future sea-level rise during the next century, a number that currently ranges from inches to feet. […]

  • Polar glaciers may be home to previously undiscovered carbon cycle
    on April 12, 2017 at 2:59 pm

    Microbes in streams flowing on the surface of glaciers in the Arctic and Antarctic may represent a previously underestimated source of organic material and be part of an as yet undiscovered 'dynamic local carbon cycle,' according to a new paper. […]

  • The Arctic Ocean is becoming more like the Atlantic
    on April 6, 2017 at 6:39 pm

    The eastern Arctic Ocean is becoming more like the Atlantic Ocean, a new study combining remote sensing and local data finds. […]