Changes in Solar Activity During the Wolf Minimum—new Insights From a High-Resolution 14 C Record Based on Danish Oak

We present a new biennial record of radiocarbon ( 14 C) measured in Danish oak. The new record covers the years 1251–1378 CE, thereby spanning the Grand Solar Minimum known as the Wolf Minimum. Two oak samples from every other year were measured at the AMS facility at Aarhus University (Denmark), resulting in an average precision of 1.4‰ for the record. Spectral analysis of the new record revealed two peaks at 27 and 9.1 years, which could indicate the Hale cycle was lengthened and the Schwabe cycle shortened during the Wolf Minimum, but it is also possible that the amplitude of the Schwabe cycle was too small to be accurately identified with the acquired precision of this record. The record was bandpass filtered to investigate the variability of the amplitude in different bands, which showed a dampening of the amplitude during the second half of the Wolf Minimum in bands centered on the Schwabe and the Hale cycle, respectively. A reconstruction of the solar modulation function, Φ, also showed a periodicity of ca. 9 years, and indicated that the Wolf Minimum was preceeded by one cycle of decreased solar activity

Amplitude · Astrophysics · Nuclear physics · Optics · Physics · Radiocarbon dating · Solar cycle · Solar maximum · Solar minimum · Geology and Paleoclimatology Research · Geomagnetism and Paleomagnetism Studies · Tree-ring climate responses · Geology · Paleontology

• Paleoenvironmental and paleoclimatic changes of Engir Lake (Central Anatolia) and its surroundings during the last 1090 years

  Open Access•Gönül Mutlu, Uğur Doğan et al.•Quaternary International•2022

  Añadir item

• Dendrochronology and Radiocarbon Dating

  Open Access•Charlotte Pearson, Steven W Leavitt et al.•Radiocarbon•2022

  Añadir item

• Variability of the North Atlantic Oscillation over the past 5,200 years

  Open Access•Jesper Olsen, N John Anderson et al.•Nature Geoscience•2012

  Añadir item

• Redfit

  Open Access•Michael Schulz, Manfred Mudelsee•Computers & Geosciences•2002

  Añadir item

• The Maunder Minimum

  Open Access•John A Eddy•Science•1976

  Añadir item

• Global Signatures and Dynamical Origins of the Little Ice Age and Medieval Climate Anomaly

  Open Access•M Mann, Michael E Mann et al.•Science•2009

  Añadir item

• Sun, ocean, climate and atmospheric 14CO2

  Open Access•Minze Stuiver, Thomas F Braziunas•The Holocene•1993

  Añadir item

• Intcal04 Terrestrial Radiocarbon Age Calibration, 0–26 Cal Kyr BP

  Open Access•Paula J Reimer, Mgl Baillie et al.•Radiocarbon•2004

  Añadir item

• SHCal13 Southern Hemisphere Calibration, 0–50,000 Years cal BP

  Open Access•Alan G Hogg, Angela Hogg et al.•Radiocarbon•2013

  Añadir item

• Batch Processing of Tree-Ring Samples for Radiocarbon Analysis

  Open Access•Alexandra Fogtmann-Schulz, Sabrina G K Kudsk et al.•Radiocarbon•2021

  Añadir item

• What Is the Carbon Origin of Early-Wood

  Open Access•Sabrina G K Kudsk, Jesper Olsen et al.•Radiocarbon•2018

  Añadir item

• Δ14C and δ13C in Annual Tree-Ring Samples from Sequoiadendron Giganteum, AD 998–1510

  Open Access•C J Eastoe, C S Tucek et al.•Radiocarbon•2019

  Añadir item

• High-Precision Radiocarbon Age Calibration for Terrestrial and Marine Samples

  Open Access•Minze Stuiver, Paula J Reimer et al.•Radiocarbon•1998

  Añadir item

• Seasonal variations in the 14 C Content of Tree Rings

  Open Access•Liam Mcdonald, David Chivall et al.•Radiocarbon•2019

  Añadir item

• A Comparison of Cellulose Extraction and ABA Pretreatment Methods for AMS 14 C Dating of Ancient Wood

  Open Access•J R Southon, A L Magana•Radiocarbon•2010

  Añadir item

• Radiocarbon Analysis on the New Aarams 1MV Tandetron

  Open Access•Jesper Olsen, Dmitry Tikhomirov et al.•Radiocarbon•2017

  Añadir item

• Discussion Reporting of 14 C Data

  Open Access•Minze Stuiver, Henry A Polach•Radiocarbon•1977

  Añadir item

• A Study of Variation of the 11-yr Solar Cycle before the onset of the Spoerer Minimum based on Annually measured 14 C Content in tree Rings

  Open Access•Toru Moriya, Hiroko Miyahara et al.•Radiocarbon•2019

  Añadir item

• The IntCal20 Northern Hemisphere Radiocarbon Age Calibration Curve (0–55 cal kBP)

  Open Access•Paula J Reimer, William E N Austin et al.•Radiocarbon•2020

  Añadir item