The global temperature will rise about 4 ° C by 2100 - Ideal Digital

cloudy in Galicia after the entry of a temporary in December Sky. / Efe

Global average temperatures increase by at least 4 ° C by 2100 and potentially more than 8 ° C by 2200 if carbon dioxide emissions are not reduced, according to new research published in the journal Nature. The scientists found that global climate is more sensitive to carbon dioxide than noted in most previous estimates.

This new research also seems to solve one of the great unknowns of climate sensitivity issues, the role of cloud formation and whether this will have a positive or negative effect on global warming. The key to this estimation can be found in the observations in the real world around the role of water vapor in cloud formation.

“Previously, estimates of the sensitivity of global temperature to a doubling of carbon dioxide ranged between 1.5 ° C and 5 ° C. This new research talk that global average temperatures will increase between 3 ° C to 5 ° C, with a doubling of carbon dioxide, “said lead author Steven Sherwood, the Centre of Excellence for Climate at the University of New South Wales.

Observations show that when water vapor is absorbed by the atmosphere through evaporation, upwelling may rise 15 kilometers into clouds that produce heavy rains or rising a few kilometers before returned to the surface without forming rain clouds.