Discusses on climate warming

The controversy on the Climate warming is a debate concerning reality, the causes, the consequences of climate warming as well as the actions to carry out to fight against this one. It is about a debate relating at the same time on scientific questions and political aspects in particular related to the Protocole of Kyoto.

Discusses scientific

Although the thesis of climate warming is based on the reports/ratios of the goupe I of GIEC written by more than 600 scientists specialists in the climate, and that those were approved by the principal Academies of Science, a certain number of voices, among which scientists expressed their dissensions.

Existence and significance of the consensus

Holding of the existence of a consensus on climate warming are based in general on the standpoint of a certain number of scientific institutions, and a study published in the Science review by an historian of sciences, Naomi Oreske. After having analyzed 928 abstracts of scientific articles selected in a database using the key words " climate change" , she concluded that none of them called into question the consensus defined by the GIEC. A British anthropologist, Benny Peiser called into question them these results at the time of a against-study. He affirmed to find certain a number of articles rejecting the consensus. The work of Peiser was subjected itself to criticisms, like that to be themselves not limited to the articles re-examined by reading panels or to have unduly classified a certain number of article among those rejecting the consensus. Thereafter Peiser recognized that the vast majority of the climatologists was of agreement with the thesis of a warming of to the action of the man but who one was far from the unanimity.

Some, like, the physicist of atmosphere R. Lindzen, affirmed, that the consensus was obtained by pressures and that those which did not conform to it saw marginalized and private credit, this charge was also launched by the geographer Timothy Ball. Contrary, a study of the review New Scientist tends to show the opposite, i.e. that a large fraction of the American scientists would have undergone pressures intended to push it to call into question the human responsibility in climate warming

Instrumental data

Certain observers question the quality of terrestrial measurements taken at the XXe century and the conclusions which one can draw. According to them, if the readings taken in the United States are numerous and cover this territory rather well, those which were carried out elsewhere are less frequent and especially less dense and thus make hazardous the concept even of total average temperature. In addition, these observers noted that a significant quantity of weather stations were built in urban area, where the temperature is generally higher than elsewhere, and wonder whether the warming observed during the XXe century would not be quite simply due partly to the intensification of the human activity in urban environment.

The third report/ratio of the GIEC, which uses these terrestrial measurements, analyzes that the differences noted between the increases of temperatures of the rural on the one hand and urban stations on the other hand do not affect to a significant degree the reconstitutions. Later studies confirmed that one could not allot the increase in the temperatures for this purpose of heat urban

Certain observers point out that the change of the temperatures is corroborated by a great number of indicators For example, the satellite measurements carried out for approximately twenty-five years (more precise and covering a surface much broader than terrestrial measurements) have been in conformity with measurements of surface and tend to confirm the lowest estimate of GIEC.

Exceptional character of the warming

Causes of climate warming

Climatic consequences of the warming

Political debate and public

Protocol of Kyoto

Financings and conflicts of interests

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