If only there were some object in space that could explain climate change. Of course it would have to be massive; on scale with our own sun.
The output of the sun changes. That is well known. Of course the about of radiant heat doesn’t change enough to account for global warming. There are other factors at play, however.
Way back in September of 2008, we posted on the relationship of sun spots and solar wind. More sun spots, more solar activity, more solar wind.
The thing about the solar wind is that it protects the earth from cosmic rays originating in deep space. The more sunspots, the more solar wind, the less cosmic rays strike the atmosphere.
So? Cosmic rays striking the atmosphere cause cloud formation. That means the more sunspots, the more solar wind, the less cosmic rays strike the atmosphere, the less global cloud cover.
As everybody knows, cloud cover causes a cooler climate. Therefore, the more sunspots, the more solar wind, the less cosmic rays strike the atmosphere, the less global cloud cover, the warmer the global climate.
It turns out that during the warming period between the 1970s and 1998, there were an unusual amount of sunspots indeed. The The United Nations climate change cabal (the IPPC) is finally acknowledging this.
Many empirical relationships have been reported between GCR or cosmogenic isotope archives and some aspects of the climate system (e.g., Bond et al., 2001; Dengel et al., 2009; Ram and Stolz, 1999). The forcing from changes in total solar irradiance alone does not seem to account for these observations, implying the existence of an amplifying mechanism such as the hypothesized GCR-cloud link. We focus here on observed relationships between GCR and aerosol and cloud properties.
What does it all mean? If solar activity is forcing climate change, much less of it can be attributed to anthropogenic CO2. I don’t expect this to end climate alarmism and the call by environmentalists for wind powered trains and a compost heap toilet for every home, but it is a start.