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A.J. Timothy Jull (born 18 December 1951) is a radiocarbon scientist and director of the University of Arizona's Accelerator Mass Spectrometer Laboratory,[1] as well as Editor in Chief of Meteoritics & Planetary Science and Radiocarbon: An International Journal of Cosmogenic Isotope Research.[2] Dr. Jull's work spans numerous disciplines, from radiocarbon dating the Shroud of Turin,[3][4] to looking for signs of life in Martian meteorites.[5]

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Courses
  • GDS
    Geological Disasters and Society

  • GT
    Geochronology and Thermochronology

  • QG
    Quaternary Geochronology

Grants
  • Funding agency logo
    Internal Decadal Anomalies in Atmospheric 14C Quantified with Tree-Ring Proxies and Implications for Long-Term Variability of the Sun-Climate System

    Principal Investigator (PI)

    2021

    $221.0K
    Active
  • Funding agency logo
    Improvements and Upgrades to the NSF-Arizona Accelerator Mass Spectrometry Laboratory

    Principal Investigator (PI)

    2014

    $343.8K
  • Funding agency logo
    Acquisition of Goods and Services, Soil Sample Analysis: 14C measurements on soil samples from Central Plains Experimental Range

    Principal Investigator (PI)

    2013

    $26.1K
  • Funding agency logo
    Accelerator Mass Spectrometry Carbon 14 Dating

    Principal Investigator (PI)

    2012

    $14.8K
  • Funding agency logo
    Collaborative Research: P2C2: Terrestrial Late Pleistocene Paleoenvironment Back to MIS 3 from Fossil Microflora & Tree Rings in Recent Excavated...

    Principal Investigator (PI)

    2011

    $145.8K
  • Funding agency logo
    pXRF Guidelines for Pesticide Residue Survey and Removal Evaluation on Textiles

    Co-Investigator (COI)

    2011

    $25.0K
  • Funding agency logo
    Northern Great Basin Textile Project Radiocarbon Dating, Lakeview District, Oregon

    Principal Investigator (PI)

    2010

    $28.9K
  • Funding agency logo
    Upgrades to the NSF Arizona Accelerator Mass Spectrometry Laboratory

    Principal Investigator (PI)

    2009

    $496.4K
  • Funding agency logo
    Radionuclide Studies of Meteorites and Other Extraterrestrial Material

    Principal Investigator (PI)

    2009

    $180.0K
News
  • Researchers Unlock Secrets of the Past with New International Carbon Dating Standard

    2020

  • Dating the Ancient Minoan Eruption of Thera Using Tree Rings

    2018

  • Radiocarbon Dating Gets a Postmodern Makeover

    2017

  • High Life in the Andes, 12,000 Years Ago

    2014

  • UA Takes National No. 2 Spot for Fulbright Scholars

    2012

  • Eight Native American High Schoolers in UA Med-Start Program

    2012

  • Carbon From Martian Meteorites Not Evidence of Life

    2012

  • Senate Passes Resolution Opposing Guns on Campus

    2011

  • Arizona's Mammoth Hunters - Out With a Whimper or a Bang?

    2010

  • Biosphere 2 Hosts Fall Lecture Series

    2008

  • Arizona Radiocarbon Dating Lab Turns 25

    2007

  • World's Leading Meteorite Experts Convene in Tucson Aug. 13 - 17

    2007

  • UA Radiocarbon Dates Help Verify Coptic Gospel of Judas is Genuine

    2006

  • Radiocarbon Dates Reveal That New Guinea Art is Older Than Thought

    2005

  • Meteorite from Oman Records Its Lunar Launch Site and Detailed History

    2004

  • Jull Wins Distinguished Leverhulme Visiting Professorship

    2004

  • UA President Honors Ombudspersons

    2003

  • UA President, Provost Take DuVal Stage With Good News, Hard Times

    2002

  • 4 UA Ombuds Recognized for 10 Years of Service

    2002

  • Faculty, Staff Leaders Back UA's Effort to Reduce Energy Use

    2001

Publications (97)
Recent
  • An intercomparison project on 14C from single-year tree rings

    2021

  • No rapid excursion at 3372-3371BCE

    2020

  • AMS 14C DATING OF THE MAYAN CODEX OF MEXICO REVISITED

    2020

  • Evaluation of combined radiocarbon and carbon stable isotope data of PM2.5 carbonaceous aerosol in Debrecen, Hungary

    2020

  • THE BEST POSSIBLE TIME RESOLUTION: HOW PRECISE COULD A RADIOCARBON DATING METHOD BE? \textendash ADDENDUM

    2020

  • Mineralogy, geochemistry and classification of the new Smolenice iron meteorite from Slovakia

    2020

  • Indian monsoon variability in the last 46kyr: Isotopic records of planktic formanifera from southwestern Bay of Bengal.

    2020

  • Gas ion source performance of the EnviroMICADAS at HEKAL Laboratory, Debrecen.

    2020

  • Anthropogenic 129I in the South China Sea and coastal waters around Taiwan

    2020

  • Radiocarbon dating of St. George's Rotunda in Nitrianska Blatnica (Slovakia): International consortium results

    2020

  • Evidence for solar-flare and other cosmic-ray events in the 14C record in tree rings: New information and a cautionary tale.

    2020

  • 14C intercomparison exercise on bones and ivory samples: implications for forensics

    2020

  • The history of the Tissint meteorite, from its crystallization on Mars to its exposure in space: New geochemical, isotopic, and cosmogenic nuclide data

    2020

  • Honey as an indicator of long-term environmental changes: MP-AES analysis coupled with 14C-based age determination of Hungarian honey samples

    2020

  • EnvironMICADAS C-14 AMS Gas ion source performance and its applications at HEKAL Laboratory, Debrecen, Hungary

    2020

  • Radiocarbon Dating and the Protection of Cultural Heritage

    2019

  • SPATIAL DISTRIBUTION OF 14C IN TREE LEAVES FROM BALI, INDONESIA

    2019

  • Signatures of global climatic events and forcing factors for the last two millennia from the active mudflats of Rohisa, southern Saurashtra, Gujarat, western India

    2019

  • Petrogenesis of lunar impact melt rock meteorite Oued Awlitis 001

    2019

  • RADIOCARBON} DATING AND THE PROTECTION OF CULTURAL {HERITAGE

    2019

  • Assessment and Development of Bone Preparation for Radiocarbon Dating at HEKAL

    2019

  • THE BEST POSSIBLE TIME RESOLUTION: HOW PRECISE COULD A RADIOCARBON DATING METHOD BE?

    2019

  • Meteorites from the Lut Desert (Iran)

    2019

  • FOSSIL} CARBON LOAD IN URBAN VEGETATION FOR DEBRECEN, {HUNGARY

    2019

  • Annual radiocarbon record indicates 16th century BCE date for the Thera eruption

    2018

  • HIGH-RESOLUTION PEAT CORE CHRONOLOGY COVERING THE LAST 12 KYR APPLYING AN IMPROVED PEAT BOG SAMPLING

    2018

  • Annual radiocarbon record indicates sixteenth century BC date for the Thera eruption

    2018

  • FROM THE EDITORS

    2018

  • Principles of radiometric dating, by K. Gopalan. Cambridge, UK: Cambridge University Press, 2017, 224~p. \textdollar74.99. Hardback. Electronic copy will be available in future. \textdollar60.00. (ISBN 978-1-107-19873-9)

    2018

  • Tree rings reveal globally coherent signature of cosmogenic radiocarbon events in 774 and 993 CE (vol 9, 3605, 2018)

    2018

  • More Rapid 14C Excursions in the Tree-Ring Record: A Record of Different Kind of Solar Activity at About 800 BC?

    2018

  • MORE RAPID C-14 EXCURSIONS IN THE TREE-RING RECORD: A RECORD OF DIFFERENT KIND OF SOLAR ACTIVITY AT ABOUT 800 BC?

    2018

  • Fluctuating radiocarbon offsets observed in the southern Levant and implications for archaeological chronology debates

    2018

  • HIGH-PRECISION BIOGENIC FRACTION ANALYSES OF LIQUID FUELS BY C-14 AMS AT HEKAL

    2018

  • RADIOCARBON DATING AND INTERCOMPARISON OF SOME EARLY HISTORICAL RADIOCARBON SAMPLES

    2018

  • Temporal Variation of Atmospheric Fossil and Modern CO2 Excess at a Central European Rural Tower Station between 2008 and 2014

    2018

  • Modulation of Cosmogenic Tritium in Meteoric Precipitation by the 11-year Cycle of Solar Magnetic Field Activity

    2018

  • TERRESTRIAL AGES OF METEORITES USING IN SITU C-14 AND Be-10 MEASUREMENTS

    2018

  • COSMOGENIC RADIONUCLIDES IN MARTIAN METEORITES: THE TISSINT CASE

    2018

  • MARINE RESERVOIR EFFECT VALUES FROM SHELL-MIDDENS OF SAN MATIAS GULF, NORTHERN PATAGONIA (ARGENTINA): A 5000-YR RECORD

    2018

  • Evaluation of an automated EA-IRMS method for total carbon analysis of atmospheric aerosol at HEKAL

    2018

  • Marine reservoir effect values from shell-middens of San Matias Gulf, northern Patagonia (Argentina): A five-thousand year record

    2017

  • Mid-late Holocene monsoonal records from the partially active mudflat of Diu Island, Southern Saurashtra

    2017

  • Radiocarbon Offsets in the Southern Levant

    2017

  • A large 14C excursion at 5480BC indicates an abnormal sun.

    2017

  • Radiocarbon offset supports a sixteenth century BC date for the Thera eruption

    2017

  • Coupled European and Greenland last glacial dust activity driven by North Atlantic climate

    2017

  • Bristlecone pine 14C past, present and future directions

    2017

  • Two billion years of magmatism recorded from a single Mars meteorite ejection site

    2017

  • Meteorite reconnaissance in Saudi Arabia

    2017

  • Evidence of poor bottom water ventilation during LGM in the equatorial Indian Ocean

    2017

  • Radiocarbon dating of the Gospel of Judas

    2017

  • Weathering of ordinary chondrites from Oman: Correlation of weathering parameters with C-14 terrestrial ages and a refined weathering scale

    2016

  • Performance of CRONUS-P - A pyroxene reference material for helium isotope analysis

    2016

  • EXPOSURE HISTORY OF MOUNT DEWITT 12007 AND PROPOSED LAUNCH-PAIRED NORTHWEST AFRICA 4884, 7611, AND 8277 LUNAR METEORITES.

    2016

  • Performance of CRONUS-P: A pyroxene reference material for helium analysis

    2016

  • Reconstructing surface ocean circulation with I-129 time series records from corals

    2016

  • Reconstructing surface ocean circulation with 129I time series from corals

    2016

  • NEW INSIGHTS IN PRESERVATION OF METEORITES IN HOT DESERTS: THE OLDEST HOT DESERT METEORITE COLLECTION

    2016

  • Where now? Reflections on future directions for cosmogenic nuclide research from the CRONUS Projects

    2016

  • Radiocarbon signal of a low and intermediate level radioactive waste disposal facility in nearby trees

    2016

  • 2 billion years of magmatism recorded from a single Mars ejection site. Science Advances, accepted.

    2016

  • Meteorites found on Misfits Flat dry lake, Nevada

    2016

  • Petrology and geochemistry of feldspathic impact-melt breccia Abar al' Uj 012, thefirst lunar meteorite from Saudi Arabia

    2016

  • The CRONUS-Earth Project: A synthesis

    2015

  • Cosmogenic radionuclides and mineralogical properties of the Chelyabinsk (LL5) meteorite: What do we learn on the meteoroid

    2015

  • The CRONUS-Earth intercomparison for cosmogenic analysis

    2015

  • In situ cosmogenic nuclide production rate calibration for the CRONUS-Earth project from Lake Bonneville, Utah

    2015

  • An inter-laboratory comparison of cosmogenic 3He and radiogenic 4He in the CRONUS-P pyroxene standard

    2015

  • Conventions for reporting radiocarbon determinations

    2014

  • Excursions in the 14C record at AD 774-775 in tree rings from Russia and America

    2014

  • SECOND RADIOCARBON INTERCOMPARISON PROGRAM FOR THE CHAUVET-PONT D'ARC CAVE, ARDECHE, FRANCE

    2014

  • Excursions in the 14C record at AD 774-775 in tree rings from Russia and America and their significance for astrophysics

    2014

  • The Danebury iron age meteorite – an H5 ordinary chondrite ‘find’ from Hamphire, England

    2014

  • A 14C chronostratigraphy for the project of scientific drilling at Lake Qinghai, China

    2014

  • Editors’ note

    2014

  • A climate threshold at the eastern edge of the Tibetan plateau

    2014

  • Radiocarbon measurements of dissolved inorganic and organic carbon in Lake Qinghai and inflowing rivers (NE Tibet-Qinghai Plateau, China).

    2014

  • Iodine-129 in seawater offshore Fukushima: Distribution, speciation, sources and budget

    2013

  • Stones from Mohave County, Arizona: Multiple falls in the “Franconia strewn field”

    2013

  • Cesium, iodine and tritium in NW Pacific waters – a comparison of the Fukushima impact with global fallout

    2013

  • Cesium, iodine and tritium in NW Pacific waters \ ndash$\mathsemicolon$ a comparison of the Fukushima impact with global fallout

    2013

  • Radionuclide studies of stony meteorites from desert locations

    2013

  • Radioglerodonoe Daterovaniye Paleolitichesnikh Stoyanok v Doline Reki Ikh-Tulberiin-Gol v Severnoi Mongolii (Radiocarbon Dating of Paleolithic Sites in the Ikh-Tulberiin-Gol River Valley, Northern Mongolia

    2013

  • Cesium, iodine and tritium in NW Pacific waters \ amp$\mathsemicolon$ndash$\mathsemicolon$ a comparison of the Fukushima impact with global fallout

    2013

  • Some interesting and exotic applications of carbon-14 dating by accelerator mass spectrometry

    2013

  • Interpretation of burial rites and problems of Kyerdyugen burial of the Ymyakhtakh culture

    2012

  • The Upper Paleolithic of Mongolia: Recent finds and perspectives

    2012

  • Radiocarbon dating, reservoir effects and calibration

    2012

  • Tracing the pace of Quaternary landscape change with cosmogenic nuclides

    2012

  • The earliest surviving textiles in East Asia from Chertovy Vorota cave, Primorye Province, Russian Far East

    2012

  • Interplay between the Westerlies and the Asian summer monsoon recorded in Lake Qinghai sediments since 32k

    2012

  • A reduced organic carbon component in Martian basalts

    2012

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