Changes in jet stream, storm tracks, linked to prairie drought patterns

New findings from a Candian study may help experts better predict future drought patterns and water availability in the prairies. The researchers investigated records of drought over the past 2000 years from lake sediments in the northern Canadian prairie region (Manitoba to Alberta), as well as from sites in North Dakota and Minnesota. “Our results from the Canadian prairies show a previously unknown and abrupt shift in climatic conditions around AD 700, while in the northern U.S. prairies, the shift occurred 500 years later, at the onset of the Little Ice Age in North America,” says one of the team’s lead scientists.