In the past periods when there are fewer sunspots produced, known as the Maunder Minimum, have been linked to colder conditions known as the “little ice age”. It was during such this period from 1645 to 1715, identified by British astronomer Edward Maunder, that the River Thames in London froze over.
The researchers write of their latest work:
The model draws on dynamo effects in two layers of the Sun, one close to the surface and one deep within its convection zone. Predictions from the model suggest that solar activity will fall by 60 per cent during the 2030s to conditions last seen during the ‘mini ice age’ that began in 1645.
However, the paper’s chief author, Professor Valentina Zharkova warns against complacency over climate change due to the potential temporary cooling effect.
Zharkova ends with a word of warning: not about the cold but about humanity’s attitude toward the environment during the minimum. We must not ignore the effects of global warming and assume that it isn’t happening. “The Sun buys us time to stop these carbon emissions,” Zharkova says. The next minimum might give the Earth a chance to reduce adverse effects from global warming.
Bill Condie is a science journalist based in Adelaide, Australia.
Read science facts, not fiction...
There’s never been a more important time to explain the facts, cherish evidence-based knowledge and to showcase the latest scientific, technological and engineering breakthroughs. Cosmos is published by The Royal Institution of Australia, a charity dedicated to connecting people with the world of science. Financial contributions, however big or small, help us provide access to trusted science information at a time when the world needs it most. Please support us by making a donation or purchasing a subscription today.