From the Department of the Obvious - our Sun impacts our Climate

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And since our Sun is a variable star, our climate will vary. From Gizmag:

Sun’s activity shown to influence natural climate change
In a new study that may greatly add to our understanding of the drivers behind climate change, researchers from Lund University in Sweden claim to have accurately reconstructed solar activity levels during the last ice age. By analyzing trace elements in ice core samples in Greenland and cave mineral formations in China, the scientists assert that regional climate is more influenced by the sun than previously thought.

The effect of the sun on natural climate change has been one of constant debate, and its degree of influence varies dependent upon the climate modelling used. However, this recent study by Lund University may suggest that direct solar energy input affects parts of the atmosphere which then indirectly changes atmospheric circulation, resulting in increases or decreases in temperature over certain regions.

According to the researchers, a measurable variance in solar activity during the last glacial maximum (22,500 - 10,000 years ago) resulted in increased winter precipitation during periods of low solar activity. The team claims that these results may explain the positive correlations between their solar activity reconstruction and the study of indicator isotopes they used as a measure of historical precipitation temperatures in the examined ice cores.

"Reduced solar activity could lead to colder winters in Northern Europe. This is because the sun’s UV radiation affects the atmospheric circulation. Interestingly, the same processes lead to warmer winters in Greenland, with greater snowfall and more storms." said Dr said Raimund Muscheler, Lecturer in Quaternary Geology at Lund University. "The study also shows that the various solar processes need to be included in climate models in order to better predict future global and regional climate change."

And this is evident as our Sun has entered an abnormally quiet time while there has been no detectable rise in the Earth's temperature. Cause --> Effect

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This page contains a single entry by DaveH published on August 20, 2014 1:04 PM.

Why Radiation is safe was the previous entry in this blog.

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