Sunspots and climate

From American Thinker:

The Climategate crowd successfully worked to obscure the connection between solar activity and climate. The leaked CRU e-mails reveal how.

In 2003, two Harvard-Smithsonian Professors, Willie Soon and Sallie Baliunas, published a peer-reviewed paper in the scientific journal Climate Research which identified solar activity as a major influence on Earth's climate. This paper also concluded that the twentieth century was not the warmest, nor was it the century with the most extreme weather over the past thousand years. These two scientists reviewed more than two hundred sources of data. The paper specifically examined climate variations observed to coincide with solar variations. One of the more notable correlations cited in this paper is the well-documented coincidence of the Little Ice Age and a solar quiet period, known as the Maunder Minimum, from A.D. 1300 to A.D. 1900. Soon and Baliunas asserted that the lack of solar activity resulted in cooler temperatures across the globe. The evidence they compiled also indicated that as the sun became more active global temperatures began to rise and the Little Ice Age ended.

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The solar correlation became a lightning rod. More than a dozen e-mails from the Jones Gang discuss how to discredit Soon and Baliunas. Ultimately, the gang decide to compile a new paper to counter the conclusion made by Soon and Baliunas, as detailed in an e-mail from Dr. Scott Rutherford dated the 12 March 2003. Dr. Rutherford does not go head-to-head with the data presented in the Climate Research paper, but he seemingly wishes to "cook" other data to counter the honest work of Soon and Baliunas, as stated by the following:

 

First, I'd be willing to handle the data and the plotting/mapping. Second, regarding Mike's suggestions, if we use different reference periods for the reconstructions and the models we need to be extremely careful about the differences. Not having seen what this will look like, I suggest that we start with the same instrumental reference period for both (1xxx xxxx xxxx). If you are willing to send me your series please send the raw (i.e. unfiltered) series. That way I can treat them all the same. We can then decide how we want to display the results.