Alterações Climatéricas - It’s not over yet…
Foi ontem a audiência "Questions Surrounding the ‘Hockey Stick’ Temperature Studies: Implications for Climate Change Assessments" na Casa de Representantes. Conclusões? In fact it has become quite fashionable of late to assert the global warming debate is over and an overwhelming scientific consensus prevails. This is simply untrue.
«In telling the global warming story the IPCC, since 2001, has relied very, very heavily on what has become known as the "hockey stick". It is based on a 1999 paper, the principal author of which was paleoclimatologist Michael Mann.
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Two Canadians, Steve McIntyre, an engineer, and Ross McKitrick, an economist, challenged Mann’s work in 2003. They argued his technique produced hockey sticks from just about any set of data. Mann responded in a notably less than scientific manner by withholding adverse statistical results and important data, and discouraging the publication of criticism of his work.
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A group of statisticians to assess the Mann data (…) [found] Mann’s statistical work flawed and unable to support the claims of the hottest century, decade and year of the past millennium.
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[The new developments destroy] the idea of an alarming escalation in global temperatures and, as the Wall Street Journal remarked on Friday, brings the present temperature rise within the range of natural historical variation.» (todos bolds meus)
Enfim… Duvide-se sempre do que cheira demasiado a consenso… Mais aqui.
