Ultraviolet light is strongly linked to solar activity: solar flares shine brightly in the ultraviolet, and it helps carry the explosive energy of the flares away into space.
Enhanced heating of the stratosphere could be behind the heightened effects felt by Europe of changes in solar activity.
But freak solar activity yesterday saw the stunning auroral display stretch much further than usual, as it was spotted by stunned stargazers across half of northern America.
As solar activity waned at the end of one of the sun's 11-year cycles, the new data shows the amount of light and heat reaching the Earth rose rather than fell.
The primary cosmic radiation that reaches the earth is minimum at periods of maximum solar activity.
During the 21st solar activity cycle the HXEBS aboard SMM satellite and the HXM on HINOTORI spacecraft detected several thousand hard X-ray solar flares.
Results show that solar activity and ENSO have their different affects on the monthly precipitation, monthly means of the barometric pressure and temperature in different time scales.
Certainly, some of the facts at hand are valid; for example, the Maya did have a Long Count calendar, pole-shift theory does exist, and solar activity does wax and wane.
This is a dear indication of the connection with the solar activity.
Increased solar activity will allow more ultraviolet rays to reach earth, that can warm the relatively colder upper atmosphere.
Based on the linear correlation between the ionospheric total electron content (TEC) and solar activity, an empirical model of the TEC is derived using the measured data of the TEC at Xinxiang.
Whether the decreased solar activity was somehow responsible for the little ice age is still unknown.
Any effect from modern changes in solar activity is likely to be dwarfed by greenhouse gas emissions and associated issues such as sulphate aerosols.
The projection was based on research that identified how low solar activity affected winter weather patterns.
China will carry out basic research into sun-earth space environment, space climate, and solar activity and its impact on space climate, and implement space-related interdisciplinary research as well.
He points out that the ice remained in Europe long after solar activity picked up from the Maunder minimum.
Active regions are in a sense the fundamental unit of solar activity and the most persistent and visible manifestation of solar magnetism.
If a change in the jet stream really is a leading indicator of solar activity, then no new cycle is on the horizon.
So why does solar activity have these effects?
The researchers conclude that declining solar activity over the period and an overall change from El Nino to la Nina conditions in the Pacific Ocean also contributed to the temperature plateau.
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