Thames River will freeze over in 15 years

The Telegraph

By Dan Hyde

The earth is 15 years from a "mini ice-age" that will cause bitterly cold winters during which rivers such as the Thames freeze over, scientists have predicted.

Solar researchers at the University of Northumbria have created a new model of the sun’s activity which they claim produces "unprecedentedly accurate predictions".

They said fluid movements within the sun, which are thought to create 11-year cycles in the weather, will converge in such a way that temperatures will fall dramatically in the 2030s.

Solar activity will fall by 60 per cent as two waves of fluid "effectively cancel each other out", according to Prof Valentina Zharkova.

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In a presentation to the National Astronomy Meeting in Llandudno, she said the result would be similar to freezing conditions of the late 17th century.

“[In the cycle between 2030 and around 2040] the two waves exactly mirror each other – peaking at the same time but in opposite hemispheres of the sun," she said.

"Their interaction will be disruptive, or they will nearly cancel each other.

"We predict that this will lead to the properties of a ‘Maunder minimum’".

Maunder minimum, indicating low sunspot activity, was the name given to the period between 1645 and 1715, when Europe and North America experienced very cold winters.

A frost fair on the Thames (Alamy)

In England during this "Little Ice Age", River Thames frost fairs were held. In the winter of 1683-84 the Thames froze over for seven weeks, during which it was "passable by foot", according to historical records.

Prof Zharkova said scientists had known about one dynamo caused by convecting fluids deep within the sun, but her research appeared to have uncovered another.

"We found magnetic wave components appearing in pairs, originating in two different layers in the sun’s interior," she said.

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"They both have a frequency of approximately 11 years, although this frequency is slightly different, and they are offset in time.

"Over the cycle, the waves fluctuate between the northern and southern hemispheres of the Sun. Combining both waves together and comparing to real data for the current solar cycle, we found that our predictions showed an accuracy of 97 per cent."

This had helped create a picture of what would happen in the 2030s.

"Effectively, when the waves are approximately in phase, they can show strong interaction, or resonance, and we have strong solar activity," Prof Zharkova said.

"When they are out of phase, we have solar minimums. When there is full phase separation, we have the conditions last seen during the Maunder minimum, 370 years ago."

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