NASA: We stand on the threshold of Maunder Minimum … and the Ice Age?

The annual average number of sunspots for 400 years (1610-2010). Source: provided NASA Marshall Space Flight Center.

January 15, 2013. There are no comments first NASA report, predicting a new "Glacial period. " One of them Washingtons Blog.

All climate scientists agree that Sun to some extent affect the Earth's climate. They just disagree as to whether the sun or man-made causes have a large effect on the weather.

In 2011, we noted: "This week, scientists from NASA and the Air Force Research Laboratory found — to their surprise — that the solar activity is declining, and that we might experience a decline in solar activity, such as was in the years 1645-1715" .

Witness describes it in dramatic tones: "Perhaps the history of science in this century ended this evening."

Scientists are convinced that global warming poses a serious threat to our planet, they say that the decrease in solar activity will give us more time … warming will stop, but not definitively, or the process is not reversed.

On the other hand, scientists are skeptical about global warming, said that there is a threat of a new mini-ice age. (Remember that in the past, scientists were convinced that we will have a new ice age, and even wanted in the 1970s, use of the products of combustion to help melt the ice. Obama's chief adviser on science — one of those who had sent warnings of a new ice age in 1970.)

See also: The Mystery of the 24th cycle of solar activity

NASA reported this week that we can be on the threshold of the next Maunder minimum (a period of unusually low sunspot number, which leads to low temperatures)

"Spend a lot of research probable connection between the Maunder Minimum, a 70-year deficit of spots in the late 17th — early 18th century, and the coldest part of the Little Ice Age, during which Europe and North America were very cold winters. The claim that there is a communication mechanism between regional cooling and reducing emissions of the Sun, are speculative. "

Sun may be on the verge of the Maunder minimum right now. Current sunny cycle — 24 minutes is weakest for more than 50 years. In addition, there is a (disputed) evidence of long-term trend of weakening the magnetic field strength of sunspots. Matt Penn and William Livingston of the National Solar Observatory forecast that by the time the Solar Cycle 25 will begin, the magnetic field on the Sun will be so weak that will be formed very few spots, if any, will be. Independent research in this direction, studying helioseismological and polar surface of the star field, generally support these conclusions.

NASA explains that the interaction between the Sun, the sources of cosmic rays and the Earth is very complex, and is engaged in an interdisciplinary team of heliophysics, chemists and other professionals to find out what's really going on. Earth's climate also influences and cosmic radiation.

So — even if the predictions of NASA unusual period of low sunspot formation justified, it is impossible to know it will lead to a large or a small decrease in temperature.

Based on: Washingtons Blog
Source: News plus comment

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