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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]Show Less
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Courses
- GDSGeological Disasters and Society
- GTGeochronology and Thermochronology
- QGQuaternary Geochronology
Grants
- 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 - AMS Analytical Support For IAEA-Related Radiocarbon Sutdies
Principal Investigator (PI)
2017
$6.0K
- Improvements and Upgrades to the NSF-Arizona Accelerator Mass Spectrometry Laboratory
Principal Investigator (PI)
2014
$343.8K
- Acquisition of Goods and Services, Soil Sample Analysis: 14C measurements on soil samples from Central Plains Experimental Range
Principal Investigator (PI)
2013
$26.1K
- Accelerator Mass Spectrometry Carbon 14 Dating
Principal Investigator (PI)
2012
$14.8K
- 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
- pXRF Guidelines for Pesticide Residue Survey and Removal Evaluation on Textiles
Co-Investigator (COI)
2011
$25.0K
- Northern Great Basin Textile Project Radiocarbon Dating, Lakeview District, Oregon
Principal Investigator (PI)
2010
$28.9K
- Upgrades to the NSF Arizona Accelerator Mass Spectrometry Laboratory
Principal Investigator (PI)
2009
$496.4K
- 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
- Measurements of 129I in the Pacific Ocean at Scripps Pier and Pacific Northwest sites: A search for effects from the 2011 Fukushima Daiichi Nuclear Power Plant accident and Hanford
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
- Variation of 14C in Japanese Tree Rings Related to the Fukushima Nuclear Accident
2019
- Meteorites from the Lut Desert (Iran)
2019
- VARIATION OF C-14 IN JAPANESE TREE RINGS RELATED TO THE FUKUSHIMA NUCLEAR ACCIDENT
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
- Search for annual carbon-14 excursions in the past
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