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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: Brumar89 who wrote (915750)	1/19/2016 8:15:33 PM
From: Wharf Rat	Read Replies (2) \| Respond to of 1574685

Why did climate cool in the mid-20th Century? The average global surface temperature decreased slightly from 1940 to 1975. The main reason behind this mid-century cooling was global dimming due to anthropogenic sulfate aerosol emissions. Climate Myth... It cooled mid-century "It was the post war industrialization that caused the rapid rise in global CO2 emissions, but by 1945 when this began, the Earth was already in a cooling phase that continued until 1975. With 32 years of rapidly increasing global temperatures and only a minor increase in global CO2 emissions, followed by 33 years of slowly cooling global temperatures with rapid increases in global CO2 emissions, it was deceitful for the IPCC to make any claim that CO2 emissions were primarily responsible for observed 20th century global warming." ( Norm Kalmanovitch) Mid-20th Century CoolingThere was a very slight cooling in the average global surface temperature from about 1940 to 1975. Although the global temperature only decreased by approximately 0.1°C, this period represents a divergence from the warming periods of 1915 to 1940 and 1975 to Present. Figure 1: Global temperature anomaly and distinct linear trends over the 21st century ( Open Mind) Climate scientists believe that the primary cause of this mid-century cooling was an increase in atmospheric aerosols due to anthropogenic emissions (primarily from the burning of fossil fuels). Aerosols have a complex effect on the climate, because they have both direct and indirect impacts.... skepticalscience.com