Il existe bien un consensus scientifique sur l’origine humaine du réchauffement climatique

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  1. > En 2016, John Cook, chercheur à l’université Monash en Australie, a réalisé une méta-analyse sur le pourcentage de scientifiques reconnaissant l’origine humaine du réchauffement climatique. Il arrive au résultat d’un “**consensus sur le consensus**”, les résultats oscillant entre 90 et 100%, selon la question exacte, le moment, et la méthode d’échantillonnage.

  2. Résumé des épisodes précédents:

    [FAR 1990](https://www.ipcc.ch/report/ar1/wg1/): The size of this warming is broadly consistent with predictions of climate models, but it is also of the same magnitude as natural climate variability Thus the observed increase could be largely due to this natural variability, alternatively this variability and other human factors could have offset a still larger human-induced greenhouse warming

    [SAR 1995](https://www.ipcc.ch/report/ar2/wg1/): Our ability to quantify the human influence on global climate is currently limited because the expected signal is still emerging from the noise of natural variability, and because there are uncertainties in key factors. “The balance of evidence suggests adiscernible human influence on global climate”

    [TAR 2001](https://www.ipcc.ch/report/ar3/wg1/): There is new and stronger evidencethat most of the warming observed over the last 50 years is attrib-utable to human activities.

    [AR4 2007](https://www.ipcc.ch/report/ar4/wg1/): Most of the observed increase in global average temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations.

    [AR5 2013](https://www.ipcc.ch/report/ar4/wg1/): It is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century.

    [AR6 2021](https://www.ipcc.ch/report/ar6/wg1/): It is unequivocal that human influence has warmed the atmosphere, ocean and land.

  3. Moi je veux bien croire que l’homme est la cause du réchauffement climatique, c’est logique. Par contre, c’est pas possible qu’il y ait un réchauffement climatique, il faisait 10 degrés ce matin chez moi…

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