The jet streams play a complex role in the world’s weather system. The polar jet stream usually loses much of its punch in the summer. But a fickle polar jet stream that developed more power than normal caused the hot, dry summer of 1980 by blocking the flow of cool air from Canada. In the winter of 1977, much of the nation froze after the jet stream and its westerlies were diverted to Alaska. Turning back to the south and bearing a load of arctic air, the winds then tunneled straight out of the northwest into the United States, bringing a record-setting winter east of the Rockies.
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Press, 5 July 1983, Page 21
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107The jet streams play a complex role in the world’s weather system. The polar jet stream usually loses much of its punch in the summer. But a fickle polar jet stream that developed more power than normal caused the hot, dry summer of 1980 by blocking the flow of cool air from Canada. In the winter of 1977, much of the nation froze after the jet stream and its westerlies were diverted to Alaska. Turning back to the south and bearing a load of arctic air, the winds then tunneled straight out of the northwest into the United States, bringing a record-setting winter east of the Rockies. Press, 5 July 1983, Page 21
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