Solar Variability on Centennial Time Scale
Abstract
The recent extended minimum of solar variability mirrors the minima in the 20th, 19th, 18th and earlier centuries. These minima fit into the Centennial Gleissberg Cycle (CGC), a 90-100 year variation observed on the Sun, in the solar wind, at the Earth and throughout the Heliosphere. Evidence of the CGC is provided by the multi-century sunspot record, and by longer records of the geomagnetic activity and radio nuclear isotopes. To explain the centennial solar variability in the framework of the mean-field solar dynamo the back action of the mean magnetic field on the sources of its generation must be taken into account. There is observational evidence of extreme low Earth’s temperatures at the GCC minima indicating the CGC variability influence on climate. A good way to see the response of the Earth's climate to the CGC forcing is to investigate the climate patterns.
- Publication:
-
40th COSPAR Scientific Assembly
- Pub Date:
- 2014
- Bibcode:
- 2014cosp...40E2819R