Claim: Once the atmosphere reaches a saturation point, additional input of CO2 will not really have any major impact.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: Both exceed 100% because their CO2 values were increased to 345 ppmv, without changing their other constituents to compensate.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: This approach can increase original oil recovery by reducing residual oil saturation by between 7% to 23% additional to primary extraction.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: 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.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: Other scientists were initially sceptical and believed the greenhouse effect to be saturated so that adding more CO 2 would make no difference.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: Increased concentrations of gases such as CO 2 (~20%), ozone and N 2O are external forcing on the other hand.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Because CO is close to saturation with high concentrations and few infrared absorption bands, the radiation budget and hence the greenhouse effect has low sensitivity to changes in CO concentration: the increase in temperature is roughly logarithmic.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Some climate change denial groups say that because CO 2 is only a trace gas in the atmosphere (roughly 400ppm, or 0.04%, 4 parts per 10,000) it can only have a minor effect on the climate.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Unanimous agreement was found among the models that future climate change will reduce the efficiency of the land and ocean carbon cycle to absorb human-induced CO. As a result, a larger fraction of human-induced CO will stay airborne if climate change controls the carbon cycle.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: As the temperature of a parcel of air decreases it will eventually reach the saturation point without adding or losing water mass.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: The increased radiative forcing due to increased CO2 in the Earth's atmosphere is based on the physical properties of CO2 and the non-saturated absorption windows where CO2 absorbs outgoing long-wave energy.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Most scientists do seem to accept that there is an effect of CO2 on climate; the big question is how large and dangerous it will be in future.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Water vapor and carbon dioxide in the atmosphere provide a temperature buffer (greenhouse effect) which helps maintain a relatively steady surface temperature.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: In the 1998 paper, "CO2-induced global warming: a skeptic's view of potential climate change" Idso said: "Several of these cooling forces have individually been estimated to be of equivalent magnitude, but of opposite sign, to the typically predicted greenhouse effect of a doubling of the air’s CO2 content, which suggests to me that little net temperature change will ultimately result from the ongoing buildup of CO2 in Earth's atmosphere.