A seemingly minor trickle of groundwater beneath Alaska’s tundra is quietly releasing vast amounts of ... this carbon is no longer locked away but instead becomes part of the natural carbon cycle. The ...

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 ...

The researchers wanted to know how the constant breathing of the Earth — in other words, the cycle of CO2 uptake and ... and central Alaska. Carbon sources are becoming especially prevalent in tundra ...

Worldwide, roughly twice the amount of the heat-trapping carbon now ... in northwestern Alaska. The ponds act as a heat source that melts the permafrost, inundates tundra vegetation and changes ...

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 ...

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 ...

The Arctic tundra has shifted from storing carbon in ... co-author of the report’s carbon cycle chapter. “But even if a small fraction of that is released, it could be a big deal.

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 ...

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 ...

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 ... a climate scientist at the University ...

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