Climatic change

Climate change is the change of climate in relation to climate history on a global or regional scale. It affects to the temperature, air pressure, precipitation, cloudiness… It’s due to natural and to anthropogenic causes.

The term is often inappropriately used to using it as a synonym for global warming.

For example: The fluctuations are very easy to check: the winter of 2009 to 2010 was much colder than normal, not only in Spain in Europe too, the effects of heavy rainfalls in the Southern Hemisphere tropics in America is presented in parallel with very little rain in the tropics of northern South America.

The average of the temperature of the Earth depends, in large measure of the flow of solar radiation received. However, it’s not considered an important contribution to the climate variability in a short term.

Variations in the solar magnetic field and solar wind emissions are also important, the interaction of Earth's upper atmosphere with particles from the sun can cause chemical reactions in either direction by changing the composition of air and cloud and the formation of these.

Human’s influence would begin with the clearing of forests for conversion to cropland and pasture, but now its influence is much greater to produce the abundant emission of gases that cause greenhouse effect: CO2 in factories and transportation and methane on farms intensive livestock and rice paddies. Currently both emissions have increased to such a level that seems difficult to reduce the short and medium term.