Computer models being investigated both in the US and in the Soviet Union were demonstrating that a nuclear war involving the exchange of a small fraction of the total American and Russian bombs could change the climate of the entire Northern Hemisphere, shifting it abruptly from its present seasonal state to a long, sunless, frozen night. (religion-online.org)
The massive storm pumped the smoke from the fires so high in the atmosphere that it spread over the entire northern hemisphere and remained there until December. (newscientist.com)
Aerosols emanating from coal - burning factories in the United States and Europe during the 1960s,»70s and»80s cooled the entire Northern Hemisphere, shifting tropical rain bands south. (sciencedaily.com)