climatic change: climate and greenhouse effect

E. The solutions: A global problem requiring an international answer

Even though the climatic changes have the very different local repercussions following the geography of the affected region, the increase of the concentration of gases to greenhouse effect reaches, the whole planet and therefore all ecosystems. It is therefore about a global problem that asks for the clear and committed answers to the international level.
Indeed, to consolidate the concentrations of GES to acceptable levels for the humanity, of the decrease of the broadcasts must be consisted between 60 and 80% in relation to the present dismissals.
The scientific world mobilizes itself then in relative works to the climatic change. In the same time, the Program international geosphere-biosphere appears to reinforce the knowledge in chemistry, biochemistry, ecology and biology
1988: the seven richest countries of the world (Germany, Canada, United States, France, Britain, Italy, Japan) create the Intergovernmental Group of experts on the evolution of the Climate or Intergovernmental Panel one Climate Change (GIEC or IPCC). The GIEC is famous for his/her/its reports that make authority and his/her/its estimable scripts on the size of the climatic changes.

1997: third session of the Conference of the Parts: the Protocol of Kyoto
1998: fourth session of the Conference of the Parts: the Plan of action of Buenos Aires. He/it is foreseen the progressive development of the rules of implementation of the Protocol of Kyoto: the system of observance, the working of the exchanges of broadcast credits, the exchange of information, the North-South cooperation,
2005: entry in force of the Protocol of Kyoto
> The Convention-Setting of the nations United on the Climatic Changes of 1992
In 1992 in Rio (Brazil), held the Conference of the Nations United on the environment and the Development, said "Summit of the Earth", during which of the hundreds of country adopted the convention on the climatic changes.
The Convention-Setting of the nations United on the Climatic Changes (CCNUCC) recognized the existence of climatic changes led by the human activities. He/it has been declared then that the industrial countries, as main persons responsible had to fight against this phenomenon.

The protocol of Kyoto
The 3rd Conference of the Parts of the Convention Centers Nations United on the climatic changes, held in Kyoto (Japan) in December 1997. The protocol that is descended of it, hire juridically and quantitatively the 38 countries industrialized signatories to reduce 5,2% their emissions of gas to greenhouse effect for the horizon 2008/2012, in relation to their broadcasts of 1990,
However, for the entry in force of the Protocol of Kyoto, two conditions are indispensable:
1. at least 55 countries must ratify it
2. among them, those aimed by the annex 1 of the Convention (that is to say country of the OECD except Mexico and Korea, and so-called countries in transition), must accumulate at least 55% of the broadcasts of CO2 in 1990.

However, George Bush withdrew the United States (responsible of near 36% of the emissions of gas to greenhouse effect) of the Protocol of Kyoto in March 2001; Russia represented 17,4% of the broadcasts in 1990.
To November 24, 2005, 156 States had ratified the Protocol. The countries of the annex 1 that have the encoded objectives represent 61,6% of the broadcasts henceforth.

Fortunately, the announcement of the ratification by Russia of the protocol of Kyoto permitted its entry in force in January 2005.
A first stage that hires the responsibility of the countries industrialized The entry in force of the protocol of Kyoto is only a first stage, modest, in the reduction of the emissions of gas to greenhouse effect. Indeed, in order to contain the middle warming up of the Earth has 2°C maximum (doorstep from which the shakeup climatic won't be anymore gérables), it will be necessary to reduce half the world broadcasts of GES of here to 2050. This contest means that the industrialized countries should divide their broadcasts by 4 in order to let the possibility in the countries in development to pursue their growth.
Indeed, the Protocol of Kyoto, doesn't include, at least until 2012, of the developing countries as India, China and Brazil, that yet shelter more a third of the world population and that will become in some years the first emitters of gas to greenhouse effect of the planet.

Browse the thread of the actuality on the evolution of the ratification of the protocol of Kyoto
> The mechanisms of flexibility
Under the influence of the United States, three mechanisms of flexibility (that permit more suppleness therefore in the application of the protocol of Kyoto) have been elaborated to achieve some reductions to least cost and especially to allow the countries industrialized to defer the implementation of strong national measures yet necessary.
"The Mechanism for a Clean Development (MDP): the countries industrialized and the entities that are descended of it can help towards financing and the realization of projects of reduction of broadcasts in the countries in development. In exchange, these first countries receive rights of supplementary broadcasts in the height of the dismissals avoided.
"The Conjoined Implementation (MOC): the industrialized countries can help towards the realization of projects of reduction of broadcasts in the countries said "in transition toward an economy of market" (country of the East and Russia) and to benefit in return from credits of broadcasts.
"The international system of exchanges of Negotiable broadcast Permits (PEN): the rights of broadcasts non used can be sold and can be bought within a world purse.
> The danger of the carbon wells
The evolution of the rates of CO2 is complicated by his/her/its cycle that touches all surroundings: oceans, soils, fauna, flora, air,. Thus, half only of the CO2 rejected by the human activities accumulates in the atmosphere, the other half being absorbed by the wells of carbon that are already very badly the oceans, soils, fauna and vegetation led.

The Protocol of Kyoto foresees the possibility to resort to the wells of carbon to get permits of broadcasts. However, seen the levels of CO2 noted and especially the engaged climatic changes, it is foreseeable that the wells of carbon that are the trees, as disappearing frees the carbon dioxide that they contain structural the broadcasts of 35 to 40 billions of tons! According to a survey of the British institute of Hadley meteorology "the terrestrial biosphere intervenes Indeed, like a puit of carbon until 2050 about, turn then into source" of broadcast, because to term the plants reject the CO2 beforehand stocked. Besides, of the studies French and British fear that the oceans and the forests become insufficient... On this point, the oceans that participate as massively in the absorption of CO2 thanks to the marine currents and to the plankton, will be less efficient.
In any case, no plan realist of forestry could compensate the dismissals of CO2 of the human societies.