Background Articles

A study published in Nature Climate Change examined how 10 big rivers in the Arctic had moved 50 years, and found they did not migrate as much as expected.

A recent Interior Department grant aims to help residents in Newtok move to higher ground, but it’s just a sliver of what’s needed.

Streams in Alaska are turning orange with iron and sulfuric acid. Scientists are trying to figure out why

Warming soils beneath Utqiagvik are triggering erosion that threatens homes, infrastructure and cultural resources. The North Slope has seen some of the fastest changes in coastal erosion in the nation.

Dozens of once crystal-clear streams and rivers in Arctic Alaska are now running bright orange and cloudy, and, in some cases, they may be becoming more acidic. This otherwise undeveloped landscape now looks as if an industrial mine has been in operation for decades, and scientists want to know why.

Alpine permafrost is thawing, according to an article by the National Science Foundation. This is bad news because thawing releases carbon dioxide and methane and because it can cause destabilization of the land, as a couple of northbound drivers found out last week when their car was buried in the slide at 23 miles, as reported in a Chilkat Valley News article.

Iñupiat communities have been looking for alternatives to traditional ice cellars. Some households switched to using manmade freezers, which can be effective but they affect the taste and the quality of the food, Nelson said. Additionally, power outages, frequent in the villages, can make this storage method unreliable. So the search is on for creative ideas to preserve traditional ice cellars.

These lakes form because warm temperatures in the Arctic are melting the permafrost.

Warmer winters and thicker layers of insulating snow are spurring creation of more taliks, sections of ground that doesn’t freeze even in winter.

Beavers were not previously recognized as an Arctic species, and their engineering in the tundra is considered negligible. Recent findings suggest that beavers have moved into Arctic tundra regions and are controlling surface water dynamics, which strongly influence permafrost and landscape stability. Here we use 70 years of satellite images and aerial photography to show the scale and magnitude of northwestward beaver expansion in Alaska, indicated by the construction of over 10,000 beaver ponds in the Arctic tundra. The number of beaver ponds doubled in most areas between ~ 2003 and ~ 2017. Earlier stages of beaver engineering are evident in ~ 1980 imagery, and there is no evidence of beaver engineering in ~ 1952 imagery, consistent with observations from Indigenous communities describing the influx of beavers over the period. Rapidly expanding beaver engineering has created a tundra disturbance regime that appears to be thawing permafrost and exacerbating the effects of climate change.

Researchers documented the formation of new, irregularly shaped, steep-sided depressions. The largest was an oval-shaped depression 28 meters (92 feet) deep, 225 meters (738 feet) long, and 95 meters (312 feet) wide. The research team attributes these changes to intermittent seafloor collapse due to the gradual warming of the permafrost sediment frozen beneath the Arctic Shelf since the end of the last ice age.

ConocoPhillips' massive Willow project would emit 284 million metric tons of carbon dioxide over its 30-year lifetime.

Permafrost contains microbes, mammoths, and twice as much carbon as Earth’s atmosphere. What happens when it starts to melt?

A previously unknown source of the strong greenhouse gas nitrous oxide has been found in East Siberian Yedoma permafrost. Published in Nature Communications today, the observation was made by an international group of researchers, with the lead of researchers from the University of Eastern Finland.

In one of the planet’s coldest places, 130 kilometers south of Russia’s Arctic coast, scientist Sergey Zimov can find no sign of permafrost as global warming permeates Siberia’s soil. As everything from mammoth bones to ancient vegetation frozen inside it for millennia thaws and decomposes, it now threatens to release vast amounts

Rising Arctic temperatures are causing permafrost to thaw, putting the world’s largest city built on frozen ground in deep trouble.

Video | In northern Siberia, the warming climate is leaving people feeling like the ground is "going out from under their feet."

Protecting the coast of Tuktoyaktuk from the onslaught of climate change is estimated to cost at least $42 million and is only guaranteed to last until 2052. Over the project’s 30-year lifespan, over 60,000 cubic metres of sand are expected to be brought to keep the beach intact.

Approximately 31 Alaska Native communities face imminent climate change due to floods and erosion. This can lead to the disappearance of culture and lifestyle changes. The four tribes are in the process of relocating from a rapidly disappearing village.

Global climate warming is most severe in the Arctic. One consequence is a widespread reduction in permafrost. Continuous, stable permafrost can act as a physical glue that helps anchor unstable slopes. Increasingly, scientists are reporting collapse of rock slopes in the High Arctic.