الاحتباس الحراري و تأثيراته في العراق

الملخص EN

Life change every day through the discoveries of serious reached by scientists in all parts of the ground.

As a result, monitoring of natural phenomena that surround our world now, alert scientists to the state pose a "real" does not threaten the human race, but also beyond the threat of human beings to the world of animals and plants and all organisms on Earth.

This new threat is global warming.

Global Warming Global Warming is the gradual rise in the temperature of the lower layer near the surface of the Earth from the atmosphere surrounding the Earth.

The reason for this rise is the increased emission of greenhouse gases or gas scarcity.

Has been familiar names in many of this phenomenon such as global warming or global climate change or global greenhouse or may be called the problem of greenhouses, as the word gases are Arabization of the word (Glass House), and no matter how many labels for this phenomenon, the problem is the one related to the high proportion of pollutants from the different gases.

the sunlight Do not reach that falls on the atmosphere all the earth's surface, as reflected approximately W of these rays in space, and absorbs about 23% into the atmosphere itself.

This means that only 52% from the sun penetrates the atmosphere to reach Earth's surface.

This percentage is found that 6% is reflected back to space, while the remainder is absorbed (46%) in the Earth's surface and sea water to Idviha.

And radiate these surfaces in turn warm thermal energy gained in the form of infrared waves with a long time.

Because the air contains some gas concentrations are scarce (such as carbon dioxide, methane and water vapor), the properties do not allow infrared radiation, this leads to the retention of these rays in the atmosphere.

This phenomenon is known as the "greenhouse effect" or effect Alsoby and without it, reduced surface temperature by 33 degrees from its current level - which fell below the freezing point of water - and to become life on earth impossible.

As it is impossible to conduct a direct impact resulting from accumulation of greenhouse gases in the atmosphere, it has developed during the past two decades, a range of mathematical models to predict what may happen.

I explained that if these models have doubled concentrations of carbon dioxide in the atmosphere than the average of pre-industrial age, this would increase the temperature on the Earth's surface an average of between 01/05 to 04/05 degrees Celsius during the next hundred years.

Have shown that reports of the Intergovernmental Panel on Climate Change (IPCC), issued every five years since 1990 that if the emission of greenhouse gases, current rates are likely to rise in global temperatures of 1.5 to 6 degrees Celsius over the hundred years to come (most likely is 3 degrees Celsius).