We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
MILLENNIAL-SCALE SOLAR VARIABILITY IN TREE RINGS OF NORTHERN FENNOSCANDIA AT THE END OF THE HOLOCENE.
- Authors
KASATKINA, ELENA A.; SHUMILOV, OLEG I.; TIMONEN, MAURI; POTOROCHIN, EVGENIY O.
- Abstract
To investigate the possible Sun-climate connection during the Holocene, the Finnish super-long tree-ring chronology covering the period from 5634 B.C. to A.D. 2004 was analyzed. As an indicator of solar activity, we used a reconstruction of total solar irradiance (TSI) covering 9300 years, which is based on a composite using the cosmogenic radionuclide 10Be measured in polar ice cores, and also on neutron monitor data (Steinhilber et al. 2009). The Multiple Taper Method (MTM) wavelet decomposition and wavelet coherence analyseswere applied to the time-series. TheMTMspectral analysis identifies themain solar cycles at ca. 200 yr (de Vries or Suess), ca. 350 yr (unnamed) and ca. 900 years (Eddy). The strongest cross-wavelet correlation was discovered between the millennium-cycle components of TSI and tree-ring width variations. This Eddy cycle, which was recently discovered in solar activity, remains both strong and stable through almost the entire Holocene, and it reappears again at lower frequencies (ca. 1300 years) after ca. A.D. 200. Our results raise questions regarding the end of the Holocene and transition to the next glacial period and confirm the complex and nonlinear nature of the Sun-climate relationship during the Holocene Epoch.
- Subjects
SCANDINAVIA; SOLAR oscillations; TREE-rings; HOLOCENE Epoch; ICE cores; SOLAR cycle
- Publication
Tree-Ring Research, 2023, Vol 79, Issue 1, p1
- ISSN
1536-1098
- Publication type
Article
- DOI
10.3959/TRR2022-4