GlacierHub News Report 04-19-18

GlacierHub News Report 04-19-18

 

The GlacierHub News Report is a bi-monthly video news report that features some of our website’s top stories. This week, GlacierHub news is featuring recent stories on sea level rise, an ancient tunic, an avalanche that took place in Russia, and even the 100th year anniversary of a world famous mint.

This week’s news report features:

Future Sea-Level Rise and the Paris Agreement

By: Andrew Angle

Summary: The goal of Paris Agreement is to hold global temperature rise to well below two degrees Celsius. However, any rise in temperatures means sea-level rise will occur to some extent. A recent study in Nature Communications examined the implications of the Paris Agreement for future sea-level rise, finding that if the current country contributions are met in full, sea-levels would rise between 1.05 and 1.23 meters.

Read more here.

Reconstructing Norway’s Oldest Garment: the Tunic of Lendbreen

By: Natalie Belew

Summary: In 2011, archaeologists came across a crumpled piece of cloth in the ice of Lendbreen Glacier. When examined, it turned out to be an incredibly well-preserved 1,700-year-old tunic that became the oldest piece of clothing found in Norway. Now it has been reconstructed, and a recent study documented the process. Starting this summer, the original Lendbreen tunic will be on display alongside one its reconstructions at the Norwegian Mountain Center, while the other will be part of the permanent collection of the Museum of Cultural History in Oslo.

Read more here.

Avalanche Strikes Near Russian Glacier

By: Jade Payne

Summary: An avalanche struck at a ski resort on the slopes of Mount Elbrus in the Russian Caucasus on March 24. The trigger, in this case, was the accumulation of meltwater, which made the snow heavier and more prone to falling. The snow was also tinted a rust-like color. Stanislav Kutuzov, head of the Department of Glaciology at the Russian Academy of Sciences in Moscow, told GlacierHub that the “atmospheric front of March 22 to 24 brought large amounts of precipitation together with dust from the Libyan desert.” The dust, from North Africa, reached the Caucasus Mountains on March 23, one day before the avalanche. The avalanche did not cause any deaths or injuries, but it did cover at least a dozen cars that stood in its path.

Read more here.

Fox’s Glacier Mints Celebrates its 100th Anniversary

By: Sabrina Ho Yen Yin

Summary: This month, Fox’s Glacier Mints, a famous candy brand from the United Kingdom, is celebrating its 100th anniversary. Making use of the similarities between glaciers and mints as refreshing and cool, we look back at the company’s clever use of the imagery of glaciers in marketing their transparent mints. The mascot for the candy is Peppy, a polar bear that is well-recognized by the brand’s lovers. Peppy has appeared in various television commercials with a fox interacting in glacier settings, British humor-style.

Read more here.


Video Credits:

Presenters: Brian Poe Llamanzares, Angela Soriano

Video Editor: Brian Poe Llamanzares

Writer: Brian Poe Llamanzares

News Intro: YouTube

Music: iMovie

Alaska Mountain Glaciers Raise Global Sea Level

Alaska’s impact on global sea level rise is becoming more pronounced. Its melting glaciers, particularly the minority mountain glaciers, will be a major driver of sea level change in the coming decades, according to a new study conducted by Chris Larsen, research associate professor at the University of Alaska Fairbanks, and his colleagues.

The glacier world in Alaska. Photo credit: Stephen Kennedy (via Flickr).
The glacier world in Alaska. Photo credit: Stephen Kennedy (via Flickr).

With over 100,000 glaciers, Alaska is home to half of the world’s glaciers. Every seven years, glacier loss from Alaska contributes a 1-foot thick layer of water covering the state of Alaska. Though mountain glaciers hold less than 1% of the total glacier volume on the Earth, the recession of mountain glaciers contribute to nearly 1/3 of current sea level rise.

Larsen and his team examined 116 glaciers across Alaska to estimate ice loss from melting and iceberg calving between 1994 to 2013. Iceberg calving, the unique process of ice chunks breaking off at the edge of a glacier, is underlined in the study because few existing observations or models value the impact of iceberg calving under climate change.

“We’ve long wondered what the contribution of iceberg calving could be across the entire state,” O’Neel, one of the researches, told the American Geophysical Union.  The Columbia Glacier in Prince William Sound has retreated more than 12 miles mostly due to iceberg calving since 1980.

The University of Alaska Fairbanks collected airborne lidar altimetry data, highly specialized research aircrafts, as part of NASA’s Operation IceBridge mission since 2009. The mission aims to picture the Earth’s polar ice in unprecedented detail with innovative science instruments to better connect the polar regions with the global climate system.

NASA's Operation IceBridge Survey Flight Over Saunders Island and Wolstenholme Fjord. Source: NASA Goddard Space Flight Center (via Flickr).
NASA’s Operation IceBridge Survey Flight Over Saunders Island and Wolstenholme Fjord. Source: NASA Goddard Space Flight Center (via Flickr).

The team also integrated the new data with information from the 1990s collected by the University scientists and Keith Echelmeyer, a pilot, mountaineer and pioneer glaciologist. They developed a more detailed characterization of the size and shape of every glacier in Alaska, in addition to the glaciers of southwest Yukon Territory and coastal northern British Columbia.

With the new data inventory, the research team has made some significant discoveries. Across the years from 1994 to 2013, Alaska’s tidewater glaciers contributed to only 6% of Alaska’s mass loss. Glaciers that end in the ocean, called tidewater glaciers, make minimal contribution to sea level rise, while glaciers ending on land are primary contributors to mountain glacier mass loss driven by climate change.

“This work has important implications for global sea level projections. With improved understanding of the processes responsible for Alaska glacier changes, models of the future response of these glaciers to climate can be improved,” Larsen told the American Geophysical Union. Despite the fact that the impact of the large-scale tidewater glacier losses in Alaska is negligible, Alaska will remain a major contributor to global sea level rise through its mountain glaciers.