Particularly important is CO2. Enormous amounts of it are continually exchanged between the atmosphere, land and oceans, as land and marine plants grow, die and decay, and as carbon-rich waters circulate in the ocean. For several thousand years until around 200 years ago, this ‘carbon cycle’ was approximately in balance and steady. Since the 19th century, human-induced CO2 emissions from fossil fuel combustion, cement manufacture and deforestation have disturbed the balance, adding CO2 to the atmosphere faster than it can be taken up by the land biosphere and the oceans (Figures 3.1 and 3.2). On average over the last 50 years, about 25% of total CO2 emissions were absorbed by the ocean making sea water more acidic and 30% was taken up on land, largely by increased plant growth stimulated by rising atmospheric CO2, increased nutrient availability, and responses to warming and rainfall changes (though the mix of these mechanisms remains unclear). The other 45% of emissions accumulated in the atmosphere. These changes to the carbon cycle are known from measurements in the atmosphere, on land and in the ocean, and from modelling studies.

By his analysis of Cook’s data, the real figure is around 91 percent. (Cook replied critiquing Tol’s methodology and standing by his survey’s original finding of 97 percent.)

If someone was told with 91% probability they would die without an operation they would have the operation!!!

https://www.politifact.com/truth-o-meter/statements/2015/sep/02/rick-santorum/sa...