I'm reposting a post I just made on my blog to this post.
There have been a few myths propagated on the "mainstream" side of the climate debate. One of these myths is that since there has been no trend in Cosmic Rays over the last 50 years, they can not be causing warming. This is not true at all.
The figure above compares the number of sunspots in green, to the Cosmic Ray Intensity (CRI) in blue.
The figure above shows the yearly global temperatures over the last 140 years, and the error bars for these yearly global temperatures. Comparing the Cosmic Ray Intensity to this graph, a slight increase in the minima of the Cosmic Ray Intensity from 1955-1970 corresponds well to a flatline in temperatures from 1940-1975.
The CRI then plummeted to a record low in 1992, which corresponds to a temperature increase during this period. Also note that towards the end, the temperatures have recently flatlined, as cosmic ray intensities have gone up slightly.
This figure from above combines the global temperature anomalies to the Cosmic Ray Flux (CRF) from 1937-1994. There is a very good correspondance between the two variables, suggesting that Cosmic Rays (modulated by solar activity) play a large and dominant role in current climate change.
Not sure how Krivova and Solanki get an increase in the GCR counts in the 1990s, when GCRs reached a record low in 1992.