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Drought, Lightning, and the Sun …

26 May 2010

At www.physorg.com/print194030525.html tree rings have been used to compile a temperature proxy over 1000 years in NW Africa (Morocco, Algeria and Tunisia) and they show dry periods of climate in the 13th and 16th centuries – also in the late 20th century. They appear to coincide with warmish weather in northern Europe – droughts are virtually absent after around AD1500 – for about 400 years

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