Climate Change

It is a significant and lasting change in the local or global weather patterns. The causes can be: natural, (such as variations in energy received from the sun), volcanic eruptions, ocean circulation, and other biological process. Or it may be caused by anthropogenic influence (caused by human activities), for example, through emissions of CO2 and other heat-trapping gases, or alteration of the use of large areas of soil that finally cause global warming .

Climate Change

The causes are divided into two general categories:

Natural causes: These include volcanic activity and changes in                                  energy received from the Sun, among others.

Anthropogenic causes: (generated by human activities): Includes                                     burning fossil fuels and deforestation, etc.

There are also internal climatic causes, such as variations in ocean currents and atmospheric circulation that may influence for shorter periods.

Human activity since the Industrial Revolution has mainly influenced the emission of CO2 and other greenhouse gases that have helped amplify the natural greenhouse effect.

Several air, such as water vapor, carbon dioxide, have molecular vibrational frequencies in the spectral range of the radiation emitted from the Earth's surface, colloquially components: well absorbed heat from the Earth.

But greenhouse gases absorb and re-emit long-wave radiation, returning to the earth's surface, causing the temperature rise, a phenomenon called Greenhouse Effect

One result of the greenhouse effect, is to maintain a concentration of water vapor in the lower troposphere much higher than would be possible at low temperatures that exist without this phenomenon.

One of the many threats to the systems that support life, resulting directly from increased use of land resources. In particular, the burning of fossil fuels, cutting and burning of forests releases carbon dioxide. This combined with other gas traps solar radiation near the earth's surface, causing increased heat absorption and, therefore, global warming.

Global warming initiates a series of changes in the Earth's balance, including the accelerated melting of ice sheets, glaciers and snow in the high peaks of the world. The water is finally freed up in the sea and could in the next 45 years, increasing sea level enough to flood coastal cities in low areas and river deltas. Also drastically alter the international agricultural production and exchange systems.

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