Three Centuries of Sunspot Group Numbers with Monthly Resolution
Abstract
I construct four overlapping, intercalibrated 'backbone' composite series [based on primary observers Staudach, Schwabe, Spōrer, Wolfer, and Greenwich (RGO)] covering the three-century interval 1720-2020 of the Sunspot Group Number with monthly resolution. Of note are the following properties:
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2020
- Bibcode:
- 2020AGUFMSH0020026S
- Keywords:
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- 7522 Helioseismology;
- SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY;
- 7524 Magnetic fields;
- SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY;
- 7536 Solar activity cycle;
- SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY;
- 7924 Forecasting;
- SPACE WEATHER