Claim: Arctic greening was recently cited, in a major report by the U.S. Geological Survey, as the central reason that the state of Alaska, despite worsening wildfires and more thaw of permafrost, might still be able to stow away more carbon than it loses over the course of the 21st century.”

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: The source rock for the Prudhoe Bay Oil Field and neighboring reserves is also a potential source for tight oil and shale gas – possibly containing "up to 2 billion barrels of technically recoverable oil and up to 80 trillion cubic feet of natural gas, according to a 2012 U.S. Geological Survey report."

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: reported permafrost was thawing quicker than predicted, and was happening even to thousands years old soil; They estimated that abrupt permafrost thawing could release between 60 and 100 gigatonnes of carbon by 2300, they mentioned gaps in the research and that abrupt permafrost thawing should have priority research and urgency.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: In 2008, a research expedition for the American Geophysical Union detected levels of methane up to 100 times above normal in the Siberian Arctic, likely being released by methane clathrates being released by holes in a frozen 'lid' of seabed permafrost, around the outfall of the Lena River and the area between the Laptev Sea and East Siberian Sea.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: A new study used field observations, radiocarbon dating, and remote sensing to account for thermokarst lakes, the authors concluded that, "..methane and carbon dioxide emissions from abrupt thaw beneath thermokarst lakes will more than double radiative forcing from circumpolar permafrost-soil carbon fluxes this century."

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: One theory is that the climate may reach a "tipping point" where positive feedback effects lead to runaway global warming; such feedbacks include decreased reflection of solar radiation as sea ice melts, exposing darker seawater, and the potential release of large volumes of methane from thawing permafrost.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Model projections showed that Arctic terrestrial ecosystems and the active layer (the top layer of soil or rock in permafrost that is subjected to seasonal freezing and thawing) would be a small sink for carbon (i.e., net uptake of carbon) over this century (p. 662).

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: The permafrost carbon cycle (Arctic Carbon Cycle) deals with the transfer of carbon from permafrost soils to terrestrial vegetation and microbes, to the atmosphere, back to vegetation, and finally back to permafrost soils through burial and sedimentation due to cryogenic processes.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: High-latitude tundra and boreal forests are particularly at risk of climate change-induced

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: The Woods Hole Research Center, citing two 2015 studies on permafrost carbon says there may be a self-reinforcing tipping point where an estimated equivalent of 205 gigatons of carbon dioxide in the form of methane could cause up to 0.5 °C (up to 0.9 °F) warming by the end of the century, which would trigger more warming.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: The Arctic is affected by current global warming, leading to Arctic sea ice shrinkage, diminished ice in the Greenland ice sheet, and Arctic methane release as the permafrost thaws.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: The current Arctic warming is leading to ancient carbon being released from thawing permafrost, leading to methane and carbon dioxide production by micro-organisms.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: [citation needed] Arctic regions notably release more heat back into space than what they absorb, effectively cooling the Earth.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: SEARCH focuses on how shrinking land ice, diminishing sea ice, and degrading permafrost impact Arctic and global systems.