Devari Ford.#3.2010

Global warming is the increase in the average's near-surface air and oceans since the mid-20thuas its projected continuation. Global surface temperature increased 0.74 ± 0.18 c1.33 ± 0.32 ° between the start and the end of the 20th century.e (IPCC) concludes that most of the observed temperature increase since the middle of the 20th century was very likely by increasing concentrations of resulting from such as burning and The IPCC also concludes that variations in natural phenomena such as have been including all of the of the projections summarized in the latest IPCC report indicate that the global is likely to rise a further 1.1 to 6.4 °C (2.0 to 11.5 °F) during the 21st centuryThe uncertainty in this estimate arises from the use of models with differing and the use of differing estimates of future greenhouse gas emissaxpected to continue beyond 2100 even if emissions stop, because of the large heeteans and the long lifetime of carboe atmosphere57 ...