Figure 5. Carbon dioxide production rates as observed up to 1970, and as permitted after 1970 for an increase of the atmospheric excess in a prescribed way (a) to a maximum of 50%. (After Siegenthaler and Oeschger, Science 199, 1978, p. 388) Figure 6. Predictions for the case in which all recoverable fossil fuels are burned. Lowermost curve shows resulting CO2 production rate, if fossil-fuel use grows at 5% per year. The two CO2 concentration curves reflect two models used; the dashed curve is regarded as less probable. (After Siegenthaler and Oeschger, op. cit.) Figure 7. Left, fractional growth of atmospheric CO2 concentration G above the preindustrial value for various initiation dates to relative to 1975 of noncarbon-based energy, with world energy growth rate of 3% per year, and a market penetration time of 50 years (time for the new energy source to advance from 1% to 50% share of market). Right, fractional growth of atmospheric CO2 for various annual world energy growth rates y, and two market penetration times tp. The 1% market share of the noncarbon-based fuel is taken to have occurred in 1965 (to = -10 years). (After Laurmann, Science 205, 1979, p. 896)
RkJQdWJsaXNoZXIy MTU5NjU0Mg==