Global Warming

Global warming is increasing the average temperature on Earth near the surface and in the oceans.

The global surface temperature has risen 0.74 º C over the past 100 years, finishing the count in 2005. The IPCC (Intergovernmental Panel of Climate Change) concluded that most of this increase in temperature since the mid-20th century, is “almost sure” to increasing concentrations of greenhouse gases caused by humans.

Natural phenomena such as solar variation and volcanoes have probably a small warming effect from pre-industrial era, in 1950, and a small cooling effect from 1950.

These conclusions have been endorsed by at least 30 scientific societies and academic science, including all the major science academies of the most industrialized countries.
While individual scientists have raised their voices in disagreement with these findings, most scientists working on the problem of global warming are in line with the findings of the IPCC.

Projections of climate models indicate that the surface temperature of Earth increased from 1.1 to 6.4 º C during the 21st century. The uncertainty in this estimate lies in the use of new and future greenhouse gases and the use of models with different concepts of climate. Another uncertainty is how the warming and the changes vary by region from which we are talking about. Although most studies focus on a period until 2100, it is estimated that global warming would last a thousand years, although the problems with greenhouse gases are stabilized. Thanks to the large heat capacity of the oceans.

Increasing global temperature will cause the ocean level rise and changing rainfall patterns, including the expansion of sub-tropical deserts. Another likely effect is that of extreme weather events, changes in agriculture, melting glaciers, species extinctions and increased lethal diseases.

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