models and direct observations find that cfcs only contribute a fraction of the warming supplied by other greenhouse gases.
models and direct observations find that cfcs only contribute a fraction of the warming supplied by other greenhouse gases.
carbon dioxide:192
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.