Can global cooling be disproved?



  1. 0 Votes

    Generally, yes. “Global cooling” was a theory floated in the 1970s, at the relative dawn of climate science, which came about as a result of scientists noting a general worldwide cooling-off trend in the 1940s and 1950s. A few researchers conjectured that “global cooling” was occurring, and these reports, which were poorly understood, made their way into the mainstream press.  Newsweek, for instance, did a prominent story in 1975 called “The Cooling World.” However, the hypothesis of global cooling was never broadly accepted among scientists even in the 1970s, and in fact the studies commissioned on it at that time eventually led the majority of climate scientists to conclude the opposite: that the planet was likely to get warmer as time went on. This was the genesis of modern climate change science. The cause of the cooling trend that gave rise to the “global cooling” theory was a large increase in particulates in the atmosphere as a result of air pollution and particularly aerosols. In the 1960s and 70s attention given to air quality issues and most developed countries banning CFC’s (aerosol propellants) resulted in a general clearing of the air–only to reveal an even greater threat lurking behind it, which was the rise of CO2 and other greenhouse gases. Today “global cooling” has very little scientific cachet, but it can still be heard quoted–not very convincingly, in most cases–as a rebuttal to the general scientific consensus that the planet is warming as a result of greenhouse gases.

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