claim: It’s usually taken to be the fact that as carbon dioxide concentrations in the atmosphere increase, the 1 per cent of CO2 that’s the heavier carbon isotope ratio c13 declines in proportion.
evidences.evidence_id: Carbon dioxide in Earth's atmosphere:18
evidences.article: Carbon dioxide in Earth's atmosphere
evidences.evidence: The global mean CO 2 concentration is currently rising at a rate of approximately 2 ppm/year and accelerating.
evidences.votes: NOT_ENOUGH_INFO SUPPORTS NOT_ENOUGH_INFO
evidences.evidence_id: Carbon dioxide:192
evidences.article: Carbon dioxide
evidences.evidence: Increases in atmospheric concentrations of CO 2 and other long-lived greenhouse gases such as methane, nitrous oxide and ozone have correspondingly strengthened their absorption and emission of infrared radiation, causing the rise in average global temperature since the mid-20th century.
evidences.votes: NOT_ENOUGH_INFO SUPPORTS NOT_ENOUGH_INFO
evidences.evidence_id: Carbon dioxide:204
evidences.article: Carbon dioxide
evidences.evidence: As the concentration of carbon dioxide increases in the atmosphere, the increased uptake of carbon dioxide into the oceans is causing a measurable decrease in the pH of the oceans, which is referred to as ocean acidification.
evidences.votes: NOT_ENOUGH_INFO SUPPORTS NOT_ENOUGH_INFO
evidences.evidence_id: Eocene:4
evidences.article: Eocene
evidences.evidence: The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in comparison with the more common isotope 12C.
evidences.votes: NOT_ENOUGH_INFO SUPPORTS NOT_ENOUGH_INFO
evidences.evidence_id: Greenhouse gas:127
evidences.article: Greenhouse gas
evidences.evidence: Measured atmospheric concentrations of carbon dioxide are currently 100 ppm higher than pre-industrial levels.
evidences.votes: NOT_ENOUGH_INFO SUPPORTS NOT_ENOUGH_INFO