claim: Measurements of carbon isotopes and falling oxygen in the atmosphere show that rising carbon dioxide is due to the burning of fossil fuels and cannot be coming from the ocean.
evidence: Gas solubility decreases as the temperature of water increases ( except when both pressure exceeds 300 bar and temperature exceeds 393 K, only found near deep geothermal vents ) and therefore the rate of uptake from the atmosphere decreases as ocean temperatures rise.