by Lawrence Solomon - from the National Post
Tornadoes are associated with episodes of great temperature contrasts, often involving unseasonably cold air colliding with warm air. During the 1960s and 1970s, when global temperatures cooled so much that scientists believed we were entering a period of global cooling , the number of tornadoes rose. 1973, which saw 1100 tornadoes in the U.S., was dubbed The Year of the Tornado, only to be followed by the fiercer Widespread Tornado Outbreak of 1974: Of that year’s 148 tornadoes, 118 tore up swathes of at least one mile in length and claimed 330 deaths. As temperatures rose in the following decades, tornadoes steadily declined in number.
Over the last decade, global temperatures stopped rising and have begin to fall. And tornadoes could once again be on the rise, a sign of the global cooling trend that many climate experts have been anticipating. Read more...
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