Daily sunspot number (yellow), monthly mean sunspot number (blue), smoothed monthly sunspot number (red) for the last 13 years and 12-month ahead predictions of the monthly smoothed sunspot number:
SC (red dots) : prediction method based on an interpolation of Waldmeier’s standard curves; It is only based on the sunspot number series.
CM (red dashes) : method (from K. Denkmayr and P. Cugnon) combining a regression technique applied to the sunspot number series with the aa geomagnetic index used as a precursor (improved predictions during the minimum phase between solar cycles).
“Hi all, The latest edition of The 5 MHz Newsletter – No.17, Summer/Autumn 2016 – is now available for free PDF download from the RS... Read more
Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences have made the world’s smallest radio receiver – built out of a... Read more
TAMPA, Fla., Dec. 15, 2017 /PRNewswire-USNewswire/ — Patients at St. Joseph’s Children’s Hospital in Tampa had a direct link from th... Read more
The AztechSat-1 CubeSat, which traveled to the International Space Station (ISS) last weekend on the 19th Space-X Commercial Resupply Services (CRS-19... Read more
The twice-delayed launch of the United Launch Alliance (ULA) Delta II rocket that will transport the AMSAT RadFxSat (Fox-1B) CubeSat carrying an Amate... Read more
By Warren Duffie Jr., Office of Naval Research ARLINGTON, Va.—The signal lamp aboard the guided-missile destroyer USS Stout flashed fast light bursts... Read more
by By Angela Rozier WEST PALM BEACH, Fla. —South Florida amateur radio operators are also keeping a close eye on Tropical Storm Erika. They’re r... Read more
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Fdaily-and-monthly-sunspot-number-last-13-years%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151