About the recalibration of the sunspot record

• Published in: arXiv.org
• Main Authors: Georgieva, Katya, Kilcik, Ali, Nagovitsyn, Yury, Kirov, Boian
• Format: Paper
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 22.01.2017
• Subjects: Irradiance; Solar activity; Sunspots; Trends

In 2015 the calculation of the International (Zurich) sunspot number was cancelled, and it was replaced by a new "recalibrated" series. A new data series was proposed also for the Group sunspot number. As a result, these two series which originally differed mainly in their long-term trends...