Tree rings reveal globally coherent signature of cosmogenic radiocarbon events in 774 and 993 CE

New tree-ring evidence for the Late Glacial period from the northern pre-Alps in eastern Switzerland

(2018) Frederick Reinig et al.   QUATERNARY SCIENCE REVIEWS

Multi-proxy dating of Iceland’s major pre-settlement Katla eruption to 822–823 CE

(2017) Ulf Büntgen et al.   GEOLOGY

Cosmic ray event in 994 C.E. recorded in radiocarbon from Danish oak

(2017) A. Fogtmann-Schulz et al.   GEOPHYSICAL RESEARCH LETTERS

Multi-proxy dating the ‘Millennium Eruption’ of Changbaishan to late 946 CE

(2017) Clive Oppenheimer et al.   QUATERNARY SCIENCE REVIEWS

Relationship between solar activity and Δ14C peaks in AD 775, AD 994, and 660 BC

(2017) Junghun Park et al.   RADIOCARBON

A rapid cosmic-ray increase in BC 3372–3371 from ancient buried tree rings in China

(2017) F. Y. Wang et al.   Nature Communications

Atmospheric impacts of the strongest known solar particle storm of 775 AD

(2017) Timofei Sukhodolov et al.   Scientific Reports

Intercomparison of 14C Dating of Wood Samples at Lund University and ETH-Zurich AMS Facilities: Extraction, Graphitization, and Measurement

(2017) F Adolphi et al.   RADIOCARBON

INTRA-ANNUAL DENSITY FLUCTUATIONS IN TREE RINGS: HOW, WHEN, WHERE, AND WHY?

(2016) V. De Micco et al.   IAWA JOURNAL

Cooling and societal change during the Late Antique Little Ice Age from 536 to around 660 AD

(2016) Ulf Büntgen et al.   Nature Geoscience

Ranking of tree-ring based temperature reconstructions of the past millennium

(2016) Jan Esper et al.   QUATERNARY SCIENCE REVIEWS

Historical Auroras in the 990s: Evidence of Great Magnetic Storms

(2016) Hisashi Hayakawa et al.   SOLAR PHYSICS

MICADAS: Routine and High-Precision Radiocarbon Dating

(2016) L Wacker et al.   RADIOCARBON

Optimization of the Graphitization Process at Age-1

(2016) Mojmír Němec et al.   RADIOCARBON

Alternative Methods for Cellulose Preparation for AMS Measurement

(2016) Mojmír Němec et al.   RADIOCARBON

Rapid increase in cosmogenic 14C in AD 775 measured in New Zealand kauri trees indicates short-lived increase in 14C production spanning both hemispheres

(2015) D. Güttler et al.   EARTH AND PLANETARY SCIENCE LETTERS

Cosmic ray event of A.D. 774-775 shown in quasi-annual10Be data from the Antarctic Dome Fuji ice core

(2015) Fusa Miyake et al.   GEOPHYSICAL RESEARCH LETTERS

Timing and climate forcing of volcanic eruptions for the past 2,500 years

(2015) M. Sigl et al.   NATURE

Estimates of volcanic-induced cooling in the Northern Hemisphere over the past 1,500 years

(2015) Markus Stoffel et al.   Nature Geoscience

Multiradionuclide evidence for the solar origin of the cosmic-ray events of ad 774/5 and 993/4

(2015) Florian Mekhaldi et al.   Nature Communications

Excursions in the 14 C record at A.D. 774-775 in tree rings from Russia and America

(2014) A. J. Timothy Jull et al.   GEOPHYSICAL RESEARCH LETTERS

Radiocarbon Dating to a Single Year by Means of Rapid Atmospheric 14C Changes

(2014) L Wacker et al.   RADIOCARBON

Extraterrestrial confirmation of tree-ring dating

(2014) Ulf Büntgen et al.   Nature Climate Change

The AD775 cosmic event revisited: the Sun is to blame

(2013) I. G. Usoskin et al.   ASTRONOMY & ASTROPHYSICS

Atmospheric Radiocarbon for the Period 1950–2010

(2013) Quan Hua et al.   RADIOCARBON

Another rapid event in the carbon-14 content of tree rings

(2013) Fusa Miyake et al.   Nature Communications

A signature of cosmic-ray increase in ad 774–775 from tree rings in Japan

(2012) Fusa Miyake et al.   NATURE

Responses of leaf nitrogen and mobile carbohydrates in differentQuercusspecies/provenances to moderate climate changes

(2012) M.-H. Li et al.   PLANT BIOLOGY

Pulse-labelling trees to study carbon allocation dynamics: a review of methods, current knowledge and future prospects

(2012) D. Epron et al.   TREE PHYSIOLOGY

2500 Years of European Climate Variability and Human Susceptibility

(2011) U. Buntgen et al.   SCIENCE

A revolutionary graphitisation system: Fully automated, compact and simple

(2009) L. Wacker et al.   NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS