© NASA
The Sun by the Atmospheric Imaging Assembly of NASA's Solar Dynamics Observatory.
Is Earth slowly heading for a new ice age?
Looking at the decreasing number of sunspots, it may seem that we are entering a nearly spotless solar cycle which could result in lower temperatures for decades. "The solar cycle is starting to decline. Now we have less active regions visible on the sun's disk," Yaireska M. Collado-Vega, a space weather forecaster at NASA's Goddard Space Flight Center, told
Phys.org.
But does it really mean a colder climate for our planet in the near future?
In 1645, the so-called Maunder Minimum period started, when there were almost no sunspots. It lasted for 70 years and coincided with the well-known "Little Ice Age", when Europe and North America experienced lower-than-average temperatures. However, the theory that decreased solar activity caused the climate change is still controversial as no convincing evidence has been shown to prove this correlation.
Helen Popova, a Lomonosov Moscow State University researcher predicts that if the existing theories about the impact of solar activity on the climate are true, then this minimum will lead to a significant cooling, similar to the one during the Maunder Minimum period. She recently developed a unique physical-mathematical model of the evolution of the magnetic activity of the sun and used it to gain the patterns of occurrence of global minima of solar activity and gave them a physical interpretation.
"Given that our future minimum will last for at least three solar cycles, which is about 30 years, it is possible that the lowering of the temperature will not be as deep as during the Maunder Minimum," Popova said earlier in July. "But we will have to examine it in detail. We keep in touch with climatologists from different countries. We plan to work in this direction."
The solar cycle is the periodic change in the Sun's activity and appearance like changes in the number of sunspots. It has an average duration of about 11 years. The current solar cycle began on in January 2008, with minimal activity until early 2010.
The sun is now on track to have the lowest recorded sunspot activity since accurate records began in 1750. The long-term decline in solar activity set in after the last grand solar maximum peaked in 1956.
Comment: So if humans - and all other species - possess totally unique genes, with no similar genes in any other species or evolutionary history, where do they come from? How does evolution 'find' these needles in the cosmic haystack? Clearly there is more to the molecular biology picture than mainstream science has assumed until now. Perhaps we live in a 'purpose-driven' universe?