completing the carbon cycle. The tundra, a frozen treeless Arctic biome with long dark winters and short summers, alters the balance of this cycle. While it doesn’t have the dense, fast-growing ...

It’s a vicious cycle. Rising temperatures ... For millennia, the Arctic tundra has helped stabilize global temperatures by storing carbon in the frozen ground. Wildfires have changed that ...

One recent turning point for the region involves its carbon footprint ... permafrost across the tundra, in some cases, severely. The Arctic report, for example, showed Alaskan permafrost ...

Alaska, the Nordic countries, and Canada, has been accumulating carbon for thousands of years, helping cool the Earth’s atmosphere. In a warming world, the researchers say that the carbon cycle ...

A few snow drifts remain on June 18, 2004, on the Arctic coastal plain of the National Petroleum Reserve in Alaska. The amount of atmospheric carbon absorbed by the Arctic’s tundra region in the ...

The tundra has become a source of emissions ... This year’s report includes a detailed accounting of how the carbon cycle is changing in the Arctic. Scientists have been closely watching ...

Elizabeth Min and her team investigated the response of carbon in the tussock tundra ecosystem ... of shrubs on the carbon cycle, the team created two plots in Alaska that excluded animals.

But as fossil fuel emissions heat the planet, balmier air temperatures are thawing Arctic tundra, activating carbon ... including for scientists assessing the carbon cycle.

But the Arctic has warmed up at a faster rate than the planet as a whole during that period and its tundra is now releasing more carbon dioxide than it stores, according to scientists’ annual ...

After locking carbon dioxide in its frozen soil for millennia, the Arctic tundra is undergoing a dramatic ... microbial decomposition. In 2024, Alaska recorded its second-warmest permafrost ...