claim: Arctic sea ice has been steadily thinning, even in the last few years while the surface ice (eg - sea ice extent) increased slightly.
evidences.evidence_id: Arctic Ocean:122
evidences.article: Arctic Ocean
evidences.evidence: The mean extent of the ice has been decreasing since 1980 from the average winter value of 15,600,000 km2 (6,023,200 sq mi) at a rate of 3% per decade.
evidences.votes: SUPPORTS REFUTES
evidences.evidence_id: Arctic Ocean:162
evidences.article: Arctic Ocean
evidences.evidence: The Arctic ice pack is thinning, and a seasonal hole in the ozone layer frequently occurs.
evidences.votes: SUPPORTS SUPPORTS
evidences.evidence_id: Arctic Ocean:26
evidences.article: Arctic Ocean
evidences.evidence: Nevertheless, as all the explorers who travelled closer and closer to the pole reported, the polar ice cap is quite thick, and persists year-round.
evidences.votes: REFUTES NOT_ENOUGH_INFO
evidences.evidence_id: Arctic sea ice decline:33
evidences.article: Arctic sea ice decline
evidences.evidence: A 2018 study of the thickness of sea ice found a decrease of 66% or 2.0 m over the last six decades and a shift from permanent ice to largely seasonal ice cover.
evidences.votes: NOT_ENOUGH_INFO SUPPORTS
evidences.evidence_id: Global warming:150
evidences.article: Global warming
evidences.evidence: Global warming has led to decades of shrinking and thinning of the Arctic sea ice, making it vulnerable to atmospheric anomalies.
evidences.votes: SUPPORTS SUPPORTS