What is Convention of Climate Change?

They will work on a global agreement to succeed the Kyoto protocol - which came into force in 2005 and commits rich countries to cut their emissions by 2012 - after the talks at Copenhagen last year failed to replace it.

There is no scientific evidence to support Global warming, i actually had a professor in college tell me this in a Chem 2 class. They changed the name to climate change because temperatures were getting colder then they previously were instead of hoter. If you look at temperature charts on a larger scale you will see that there are highs and lows. There is also no proof that carbon released into the atmosphere causes holes in the ozone layer. They actually happen naturally and always have. Agriculture is responsible for an estimated 14 percent of the world's greenhouse gases. A significant portion of these emissions come from methane, which, in terms of its contribution to global warming, is 23 times more powerful than carbon dioxide. So should we kill all Cows, goats, and sheep.

There is no doubt that there is an increase in carbon, methane, and other gases building up in the atmosphere and an increase in the overall temperature of the earth. These changes in temp and gases are contributing to climatic changes today.

I'm not too sure exactly what you mean as I'm sure there are many 'Conventions' on climate change but I'll answer in the same vein as the others though the previous post is mistaken. Global warming and Ozone depletion are two separate issues that he is confusing and deal with two different wavelengths of radiation.

There are many reason why global warming can occur. From increased solar input to changes in atmospheric aerosol concentration to albedo and land use changes to what are known as Milankovitch cycles, or orbital variations of the Earth, and so on. The current warming, however, is specifically due to increasing greenhouse gas concentration.

The Greenhouse Effect

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The greenhouse effect is largely dependent on solar variation. The energy, or radiation, that the Sun sends to the Earth is in the ultraviolet, visible and infrared regions of the electromagnetic spectrum. Solar energy, or energy below 4 micrometers, is collectively known as shortwave radiation while energy above this wavelength is collectively known as longwave radiation. That radiation that strikes Earth's surface is absorbed and re-emitted according to Kirchoff's Law of Thermal Radiation, which states that any object at some non-zero temperature radiates electromagnetic energy. According to Planck's Radiation Law the emitted radiation varies in frequency and wavelength dependent on the temperature of the object. While the Sun emits 99% of it's radiation below 4 micrometers, the Earth, being much cooler than the Sun, emits radiation at a longer wavelength.

Greenhouse gases have the ability to absorb energy at these longer wavelengths. Specifically between 4 micrometers and 100 micrometers. Though absorption of higher energy modes is possible it is largely inconsequential to the greenhouse effect as those frequencies are not emitted by the Earth's surface. When this electromagnetic radiation strikes a molecule with an uneven distribution of electric charges, called an electric dipole, and a matching absorption frequency it causes the molecule to oscillate or vibrate which in turn either re-emits the energy or converts it into kinetic energy. This increase in kinetic energy is what we perceive as an increase in temperature. If a collision with another molecule occurs the energy is again converted into vibrational energy which can then be re-emitted. This interconverting between vibrational energy, kinetic energy and infrared light continues until it can escape into space unimpeded.

Global Warming

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There are many lines of evidence showing that the current warming is attributable to an increase of greenhouse gases. Specifically CO2 and methane though other lesser greenhouse gases, such as Ozone and various CFCs, play small roles. CO2 absorbs at a small band centered at 15 micrometers. That is where most of the warming attributable to CO2 is coming from.

You can see the effects global warming has by such things as ecological responses to a warming climate ( http://web4.cns.utexas.edu/communications/File/Ann... ) glacial mass balance ( http://www.ibcperu.org/doc/isis/7076.pdf ) and poleward movement of disease vectors ( http://aquaticpath.phhp.ufl.edu/waterbiology/hando... )

Global warming via an increased greenhouse effect is also a reality giving that measurements show that there is more longwave radiation, mainly at CO2 absorption wavelengths, within the troposphere/hydrosphere ( http://journals.ametsoc.org/doi/pdf/10.1175/JCLI42... | http://www.agu.org/pubs/crossref/2009/2009JD011800... ) and upper atmospheric cooling combined with lower atmospheric warming ( http://www.ann-geophys.net/16/1501/1998/angeo-16-1... ) as well as the rate at which both nights and days are warming ( http://www.knmi.nl/publications/fulltexts/2005jd00... )

And we know that the increase in CO2 would not occur without anthropogenic emissions present due to the fact that atmospheric increase, at roughly 15gt per annum, is less than estimated anthropogenic emissions, at roughly 30gt per annum, as well as the 13C to 12C atmospheric ratio ( http://scrippsco2.ucsd.edu/publications/sioref4_20... ) and O2 atmospheric decrease ( https://bluemoon.ucsd.edu/publications/manning/Man... ) on top of that we have ocean decrease in pH during a warming period ( http://www.bu-eh.org/uploads/Main/doney_ann_rev_pr... )