The Climate-Grain Production Relationship Quantified

Guest essay by David Archibald There is now consensus that the Sun has now entered a quiet period. The first paper from the solar physics community predicting the current quiet period was Schatten and Tobiska’s 2003 paper “Solar Activity Heading for a Maunder Minimum?”. To date, Solar Cycle 24 has shown similar maximum SSN amplitudes…

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The US Corn Belt and the summer chill

Guest essay by David Archibald A correspondent in the Corn Belt emailed on 10th August: “Here in north central Illinois at exit 56 on I-80, most of the corn was planted by May 15. The GDD totals since May 15 at Moline, Illinois. May 15-31      + 1.7 GDD >normal. June 1-30     – 32.7 GDD <…

Further to a 1740-type event

Guest essay by David Archibald This post drew attention to the similarity between the recent warm decades and the period leading up to the extremely cold year of 1740. Now let’s investigate how a 1740-type event might play out. This graph shows the average of the monthly temperatures for the years 1736 to 1739 plotted…

How long to the 24/25 solar minimum?

Guest post by David Archibald Climate has real world consequences, and those operating in fields that will be affected by changing climate bring a different perspective to the problem of predicting what will happen. Bill Fordham, advising the grain industry in the Midwest, kindly sent me a copy of the advice he provides to his…

Neutrons and the 1970s cooling period

Note: the original title Solar Neutrons and the 1970s cooling period was unintentionally misleading as Dr. Svalgaard points out in comments: What produces Solar Neutrons? the title of the post is misleading. The cosmic rays are protons, not neutrons, and are not produced by the Sun, but by supernovae in the Galaxy. The ‘neutrons’ are…