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CLIMATE CHANGE AND ENERGY
Climate is the result of a circulatory system on a global scale, the movement of the air mass around the globe under the influence of solar radiation and the constantexchange with the ocean and ground in a very complex dynamic equilibrium, regulated by a series of factors whose influence only beginning to understand, and yet we are certain that we are altering thempermanently.

The unifying effect and global climate was seen as early as the last century. There was a sense that atmosphere and ocean have a role in global average temperature and of the energycoming from the Sun was somehow retained in the atmosphere.

Not much later (1861) was attributed to water vapor and carbon dioxide (CO2) is partial absorption, and even some scientists have come tospeculate that small changes in the proportion of these gases could have significant climate effects. This is a phenomenon that in recent years holds the world's attention, and is commonly called thegreenhouse effect. The analogy is that water and carbon dioxide (also other gases such as methane, nitrous oxide ...) act like glass in a greenhouse: solar radiation through the atmosphere and reaches thesurface where it is transformed into heat, which is reissued through it again as infrared radiation, a part of this radiation is absorbed by greenhouse gases (GHG). Retained energy causes the averagetemperature of the earth's surface being about 15 ° C instead of -18 ° C corresponding to the radiation leaving the planet.

There is evidence that past changes in the amount of solar radiation andthe composition of the atmosphere gave rise to environmental conditions very different from today. So for 100 million years ago, when there were dinosaurs, the amount of CO2 was 4 to 8 times higherand the average temperature 10 to 15 º C higher than today, while during the last ice age 10,000 years ago, the average temperature under a 9 or 10 ° C, corresponding to a CO2 content of about 2/3 of...