Open AccessComplex imprint of solar variability on tree rings
Author(s) -
Alexander Land,
Bernd Kromer,
Sabine Remmele,
Nicolás Brehm,
Lukas Wacker
Publication year - 2020
Publication title -
environmental research communications
Language(s) - English
Resource type - Journals
ISSN - 2515-7620
DOI - 10.1088/2515-7620/abc063
Subject(s) - dendrochronology , climatology , solar variation , environmental science , sunspot number , climate change , sunspot , atmospheric sciences , solar cycle , geography , geology , physics , oceanography , solar wind , archaeology , quantum mechanics , magnetic field
Many studies have investigated the role of solar variability in Holocene climate. Beyond sunspot observations, solar activity can be reconstructed from 14 C in tree rings. Due to the lack of sub-decadal resolution of 14 C records, these studies focused on long-term processes. In this study, we use an annually-resolved 14 C record to examine solar variability (e.g. 11-year Schwabe solar cycle) and its connection to European seasonal climate inferred from tree-ring records during the entire past millennium with spectral and wavelet techniques. The 11-year Schwabe solar cycle shows a significant impact in European moisture- and temperature-sensitive tree-ring records. Complex ’top-down’/‘bottom-up’ effects in the strato-tropoatmospheric system are assumed to affect European spring and summer climate with a temporal-shift as evident from observed changes in phase behavior. Significant evidence is also found for the ∼60- and ∼90-year band during the first half of the past millennium.