Scientists predict sun to be dimming and cooling down in next few decades from today and may release fewer radiations by mid of the century, according to the recently published study in the Astrophysical Journal Letters.
Cooling down of the sun would happen due to the period referred by scientists as the ‘grand minimum’, when the magnetism of the sun formed by sunspots less frequently is reduced and fewer ultraviolet radiations let it on the surface of the earth.
Researchers hope that grand minimum event is occurred at the irregular intervals by dynamic fluctuations associated to the Sun’s magnetic field. They were also capable of identifying how much cooler and dimmer the sun will become during this forthcoming grand minimum event.
Dan Lubin, a senior lecturer and Physicist at the Scripps Institution of Oceanography with the colleagues has estimated a potential possibility that the grand minimum will trigger in near future due to the downward pattern of sunspot observed in latest solar cycles, which mimics those occurred in the past events of grand minimum.
Lubin said in a statement that, “Now we have a benchmark from which we can perform better climate model simulations. We can, therefore, have a better idea of how changes in solar UV radiation affect climate change. From this linear regression we estimate a range in UV flux of 9.3 percent over solar cycle 22 and a reduction of 6.9 percent below solar cycle minimum under a grand minimum.”