Saturday, 12 January 2013

A forecast the Met Office hoped you wouldn’t see

Christopher Booker,Telegraph
"It is the graph the Met Office didn’t want you to see, in an episode which, according to one newspaper, represents “a crime against science and the public”.
Some of this story may be familiar – how on Christmas Eve the Met Office sneaked on to its website a revised version of the graph it had posted a year earlier showing its prediction of global temperatures for the next five years.
In 2011, the Met Office’s computer model prediction had shown temperatures over the next five years soaring to a level 0.8 degrees higher than their average between 1971 and 2000, far higher than the previous record year, 1998. Whereas the new graph shows the lack of any significant warming for the past 15 years as likely to continue. Apart from how this was obscured by the BBC, there are several reasons why this is of wider significance for the rest of us.
......A major reason why the Met Office’s forecasts have come such croppers in recent years is that its computer models since 1990 have assumed that by far the most important influence on global temperatures is the rise in atmospheric carbon dioxide. Yet as early as 2008, when temperatures temporarily plummeted by 0.7 degrees, equivalent to their entire net rise in the 20th century, it was already clear that something was fundamentally wrong with this assumption. The models were not taking proper account of all the natural factors governing the climate, such as solar radiation and shifts in the major ocean currents. Even the warmists admitted that it was a freak El Niño event in the Pacific which had made 1998 the hottest year in modern times. ......"

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