The background of global warming
Global warming is global warming. Nearly 100 years, average global temperature has experienced cold - warm - cold - two warm fluctuations, a general view of the rise. Into the 1980s, the marked increase in global warming.
From 1981 to 1990 than the average global temperature 100 years ago, an increase of 0.48 ℃. Lead to global warming is mainly due to human in nearly a century since the large-scale use of fossil fuels (such as coal, oil, etc.), large amounts of emissions of CO2 and other greenhouse gases. As these greenhouse gases on the radiation from the sun with a high degree of visible light through, and of the Earth's reflectance by the long-wave radiation is highly absorbent, which is often said that the "greenhouse effect", leading to global warming.
The consequences of global warming, will re-distribution of global precipitation, glaciers and permafrost melt, sea-level rise, not only harm the natural ecosystem balance, but also threaten human food supply and living environment.
A global warming trend of the specific reason is that the people burning fossil minerals to generate energy or deforestation and carbon dioxide produced by burning entered the Earth's atmosphere. The Intergovernmental Panel on Climate Change, according to climate models forecast that by 2100, the estimated global temperature will rise about 1.4-5.8 degrees Celsius (2.5-10.4 degrees Fahrenheit). According to this forecast, global warming will occur over the past 10,000 years never had the great changes to the global environment so as to the potential significant impact.
In order to prevent global warming trend, the 1992 United Nations specialized drawn up a "United Nations Framework Convention on Climate Change", the convention city in the same year in Rio de Janeiro, Brazil signed the entry into force. Under the Convention, developed countries agreed in 2000 before their release into the atmosphere of carbon dioxide and other "greenhouse gas" emissions to 1990, level. In addition, the total annual carbon dioxide emissions account for the total global carbon dioxide emissions by 60 per cent of the countries also agreed to the transfer of related technology and information to developing countries. Developed countries to developing countries such transfer of technology and information will help the latter a positive response to climate change brought about by various challenges. The deadline for May 2004, 189 countries have formally ratified the Convention on the above.
From 1981 to 1990 than the average global temperature 100 years ago, an increase of 0.48 ℃. Lead to global warming is mainly due to human in nearly a century since the large-scale use of fossil fuels (such as coal, oil, etc.), large amounts of emissions of CO2 and other greenhouse gases. As these greenhouse gases on the radiation from the sun with a high degree of visible light through, and of the Earth's reflectance by the long-wave radiation is highly absorbent, which is often said that the "greenhouse effect", leading to global warming.
The consequences of global warming, will re-distribution of global precipitation, glaciers and permafrost melt, sea-level rise, not only harm the natural ecosystem balance, but also threaten human food supply and living environment.
A global warming trend of the specific reason is that the people burning fossil minerals to generate energy or deforestation and carbon dioxide produced by burning entered the Earth's atmosphere. The Intergovernmental Panel on Climate Change, according to climate models forecast that by 2100, the estimated global temperature will rise about 1.4-5.8 degrees Celsius (2.5-10.4 degrees Fahrenheit). According to this forecast, global warming will occur over the past 10,000 years never had the great changes to the global environment so as to the potential significant impact.
In order to prevent global warming trend, the 1992 United Nations specialized drawn up a "United Nations Framework Convention on Climate Change", the convention city in the same year in Rio de Janeiro, Brazil signed the entry into force. Under the Convention, developed countries agreed in 2000 before their release into the atmosphere of carbon dioxide and other "greenhouse gas" emissions to 1990, level. In addition, the total annual carbon dioxide emissions account for the total global carbon dioxide emissions by 60 per cent of the countries also agreed to the transfer of related technology and information to developing countries. Developed countries to developing countries such transfer of technology and information will help the latter a positive response to climate change brought about by various challenges. The deadline for May 2004, 189 countries have formally ratified the Convention on the above.
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