Study finds global warming over past 400 years was due to increased Solar activity

[Sunsettommy]

JoNova

June 9,2011

EXCERPT:

Apparently previous studies of the sun-climate connection looked at the equatorial polar magnetic field which produces sun spots, but they did not consider the polar magnetic component of the solar dynamo. The polar fields are less strong than the equatorial fields, but it is claimed that the total magnetic fluxes of both fields are comparable. With proxy data they derive an empirical relation between tropospherical temperatures and solar equatorial and polar magnetic fields. The polar field could contribute about 30% as much as the equatorial field.

The paper, published in the Journal of Atmospheric and Solar-Terrestrial Physics focused on the period 1844-1960 (but extended at least one graph back to 1600) and finds our current warming period is not that different from earlier episodes and that the increase in solar activity in the last 400 years explains the warming, without any need to invoke a man-made enhanced greenhouse hypothesis.

LINK