'International sunspot number' presentation slideshows

Long-Term Space Weather and Terrestrial Climate

1.03k views • 50 slides

Calibration of Sunspot Numbers, II

217 views • 21 slides

Counting Sunspots

Counting Sunspots. Leif Svalgaard Project ASTRO Aug. 3, 2013. What We are Going to Cover Today. How to find Sunspot Drawings on the Internet How to Count Groups and Spots How to Construct Your Own Sunspot Catalog Making Graphs Historical View Questions & Answers

214 views • 12 slides

Relations coming from locations of the longest spotless segments in the 19 2 years long series

Relations coming from locations of the longest spotless segments in the 19 2 years long series of the every day sunspot observations. The new way to forecast the time of the approaching 24 solar cycle maximum.

145 views • 5 slides