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Snow and Avalanches News — ScienceDaily

Limiting Global Warming Now Can Preserve Valuable Freshwater Resource

A research team has found that the Andean region of Chile could face noticeable snow loss and roughly 10% less mountain water runoff with a global warming of approximately 2.5 degrees Celsius …

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Arctic Vegetation Has a Major Impact on Warming

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Desert Dust Collected from Glacier Ice Helps Document Climate Change

Researchers are using dust trapped in glacier ice in Tibet to document past changes in Earth’s intricate climate system — and maybe one day help predict future …

Ice Loss from Northeastern Greenland Significantly Underestimated

According to a new study that combined GPS, satellite data, and numerical modelling, ice loss from northeast Greenland could be six times greater by the end of the century than previously …

Rethinking Mountain Water Security

Water security in mountain regions relies on a broader understanding of the complex interlinks of water supply and demand that goes far beyond the study of glacier …

Climate Change to Impact Mountains on a Global Scale

Under the threat of climate change, mountain landscapes all over the world have the risk of becoming more hazardous to communities surrounding them, while their accelerated evolution may bring …

Vegetation Regulates Energy Exchange in the Arctic

Global warming is changing the Arctic by causing permafrost thaw, glacier melt, droughts, fires and changes in vegetation. These developments are strongly linked to the energy exchange between land …

River Longer Than the Thames Beneath Antarctic Ice Sheet Could Affect Ice Loss

An unexpected river under the Antarctic ice sheet affects the flow and melting of ice, potentially accelerating ice loss as the climate …

Deeper Understanding of the Icy Depths

Scientists have uncovered new details of how ice forming below the ocean surface in Antarctica provides cold dense water that sinks to the seabed in an important aspect of global water …

Warmer Climate Causing Acidification of the Arctic Ocean

Climate change is causing the Arctic Ocean’s sea ice to melt away. When the polar ocean loses its cover of sea ice, carbon dioxide uptake increases disrupting the food web in the water according …

Study Reveals New Insights Into How Fast-Moving Glaciers May Contribute to Sea Level Rise

Models of sea level rise based on our understanding of how Earth’s ice sheets respond to a warming atmosphere could be incorrect, a new study has found. This could have significant implications …

Vast Ice Sheet Facing Climate Fight on Two Fronts

The Greenland ice sheet may be more vulnerable to climate change than previously thought, new research …

Learning About the First Animals on Earth from Life at the Poles

The amazing survival strategies of polar marine creatures might help to explain how the first animals on Earth could have evolved earlier than the oldest fossils suggest according to new research. …

Seasonal Change in Antarctic Ice Sheet Movement Observed

Some estimates of Antarctica’s total contribution to sea-level rise may be over- or underestimated, after researchers detected a previously unknown source of ice loss variability. The …

Glass Microspheres Won’t Save Arctic Sea Ice

A proposal to cover Arctic sea ice with layers of tiny hollow glass spheres about the thickness of one human hair would actually accelerate sea-ice loss and warm the climate rather than creating …

Ancient Ice Age Valleys Offer Clues to Future Ice Sheet Change

Deep valleys buried under the seafloor of the North Sea record how the ancient ice sheets that used to cover the UK and Europe expelled water to stop themselves from …

Rainy Days on Track to Double in the Arctic by 2100

Today, more snow than rain falls in the Arctic, but this is expected to reverse by the end of the century. A new study shows the frequency of rainy days in the Arctic could roughly double by …

Don’t Crack: Deteriorating Safety on Frozen Lakes in a Warming World

An international team of climate and lake scientists has demonstrated that crossing frozen lakes with heavy trucks may soon be a thing of the …

Observations Confirm Model Predictions of Sea-Level Change from Greenland Melt

Rising sea levels from melting glaciers and ice sheets pose an increasing threat to coastal communities worldwide. A new analysis of high-resolution satellite observations takes a major step forward …

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Source link In areas with heavy snowfall, avalanches can be a real risk. And yet, understanding the behavior of snow pack and its potential for dangerous releases has remained somewhat shrouded in mystery. But a new method of identifying when snow is likely to slide could be a game-changer for avalanche forecasting and safety.

Researchers from the University of British Columbia in Canada have identified a set of ‘ground rules’ for forecasting avalanches. Working in partnership with avalanche safety professionals, the team used weather logs and crowd-sourced data to complete their analysis of 14 large avalanches, which had occurred since 2017 between the Rocky Mountains and the Coast Mountains of Canada.

Their method identified four key aspects of the conditions most likely to cause large and dangerous avalanches. Notably, snowpacks which had been subject to long periods of extreme weather were more likely to release than those which exhibited shorter evidence of significant shifts. The presence of deeper layers of snow was also identified as an avalanche risk.

Moreover, the investigators found that while large avalanches could occur in avalanche paths used by hikers and backcountry tourists, they often occurred in low-traffic areas. These results underscore the importance of the more general approach to avalanche forecasting, which relies on awareness of current local snowpack conditions throughout a region, rather than relying on past data.

By identifying the ground rules of avalanche behavior, this research can help inform avalanche forecasts. The data can also enable avalanche professionals to recognize warning signs associated with developing snowpacks and take preventive measures to reduce the risk of large, dangerous slides. Ultimately, with improved knowledge and awareness, lives can be saved.

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