Vida Natural 8ª C

The effect greenhouse is a process that occurs when a part of the solar radiation reflected by the terrestrial surface is absorbed by determined gases gifts in the atmosphere. As consequence of this, the heat is restrained, not being set free to the space. The effect greenhouse inside of one determined band is of vital importance therefore, without it, the life as we know it could not exist.

What if it can become catastrophic is the occurrence of an aggravation of the effect greenhouse that desestabilize the energy balance in the planet and originates a known phenomenon as global heating. The IPCC (Intergovernamental Panel for the Climatic Changes, established for the Organization of United Nations and World-wide the Meteorological Organization in 1988) in its more recent report says that most of this heating, observed during last the 50 years, if very must probably to an increase of the gases of the effect greenhouse.

The greenhouse gases (dioxide of carbon, methane, nitrous Oxide), CFC´s absorb some infra red radiation emitted by the surface of the Land and radiate in turn some of the energy absorbed in return for the surface. As result, the surface almost receives the double from energy of the atmosphere of what the one that receives from the Sun and the surface is about 30°C hotter of what it would be without the presence of the gases of the effect greenhouse.

One of the worse gases is the methane, about 20 times more powerful than the carbon dioxide, is produced by the flatulence of the ovinos and bovines, being that the cattle one represents 16% of the world-wide pollution. Scientists look the solution for this problem and are developing a remedy to try to decide the case. About the New Zelândia it was thought about charging taxes for cow, to compensate the effect of the emitted gases.




















Worried about the planet, a group of countries had created an organization to try to diminish the effect of the effect greenhouse:

Kyoto Protocol:

One consists in the protocol of one treated international one with more rigid commitments for the reduction to the emission of the gases that provoke the effect greenhouse, considered, in accordance with the majority of the scientific inquiries, as cause antropogênicas of the global heating.

Argued and negotiated in Kyoto in Japan in 1997, it was opened for signatures in 11 of ratified December of 1997 and in 15 of March of 1999. Being that this to enter in vigor needed that 55% of the countries, that together, produce 55% of the emissions, they ratified it, thus entered in vigor in 16 of February of 2005, later that Russia ratified it in November of 2004.

For it if it considers a calendar for which the country-members (mainly the developed ones) have the obligation to reduce the emission of gases of the effect greenhouse in, at least, 5.2% in relation to the levels of 1990 in the period between 2008 and 2012, also call of first period of commitment (for many countries, as the members of the UE, this correspond 15% below of the emissions waited for 2008).










People, the cause and consequences are the same ones, or almost the same ones of the global heating, if to want to confer is alone click here