Dr Timothy Heaton

School of Mathematics and Statistics

Senior Lecturer

Programme Leader: Computer Science

T.Heaton@shef.ac.uk
+44 114 222 3830

I22, Hicks Building

Full contact details

Dr Timothy Heaton
School of Mathematics and Statistics
I22
Hicks Building
Hounsfield Road
Sheffield
S3 7RH

Research interests: I am interested in non-parametric regression and developing new techniques to analyse functional data. My PhD. was related to the study of wavelets, in particular the denoising of functions and imputation. Since then I have continued my work on regression (or drawing a curve that goes near a set of points) through collaborative work aiming to improve the method of radiocarbon dating.

Publications

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Journal articles

Muzikar P & Heaton TJ (2022) WIGGLE MATCHING WITH CORRELATIONS. Radiocarbon, 64(1), 187-194.
Cooper A, Turney CSM, Palmer J, Hogg A, McGlone M, Wilmshurst J, Lorrey AM, Heaton TJ, Russell JM, McCracken K , Anet JG et al (2021) Response to comment on “a global environmental crisis 42,000 years ago”. Science, 374(6570). View this article in WRRO
Cooper A, Turney CSM, Palmer J, Hogg A, McGlone M, Wilmshurst J, Lorrey AM, Heaton TJ, Russell JM, McCracken K , Anet JG et al (2021) Response to comment on “a global environmental crisis 42,000 years ago”. Science, 374(6570).
Heaton TJ, Bard E, Bronk Ramsey C, Butzin M, Köhler P, Muscheler R, Reimer PJ & Wacker L (2021) Radiocarbon : a key tracer for studying Earth’s dynamo, climate system, carbon cycle, and Sun. Science, 374(6568).
Bard E & Heaton TJ (2021) On the tuning of plateaus in atmospheric and oceanic 14C records to derive calendar chronologies of deep-sea cores and records of 14C marine reservoir age changes. Climate of the Past, 17(4), 1701-1725.
Chalmin-Pui LS, Griffiths A, Roe J, Heaton T & Cameron R (2021) Why garden? – Attitudes and the perceived health benefits of home gardening. Cities, 112. View this article in WRRO
Cooper A, Turney CSM, Palmer J, Hogg A, McGlone M, Wilmshurst J, Lorrey AM, Heaton TJ, Russell JM, McCracken K , Anet JG et al (2021) A global environmental crisis 42,000 years ago. Science, 371(6531), 811-818.
Chalmin-Pui LS, Roe J, Griffiths A, Smyth N, Heaton T, Clayden A & Cameron R (2021) “It made me feel brighter in myself”- The health and well-being impacts of a residential front garden horticultural intervention. Landscape and Urban Planning, 205, ---. View this article in WRRO
Bard E, Heaton TJ, Talamo S, Kromer B, Reimer RW & Reimer PJ (2020) Extended dilation of the radiocarbon time scale between 40,000 and 48,000 y BP and the overlap between Neanderthals and Homo sapiens. Proceedings of the National Academy of Sciences, 117(35), 21005-21007.
Hughen KA & Heaton TJ (2020) Updated Cariaco Basin 14C calibration dataset from 0–60 cal kyr BP. Radiocarbon, 62(4), 1001-1043.
Heaton TJ, Blaauw M, Blackwell PG, Bronk Ramsey C, Reimer PJ & Scott EM (2020) The IntCal20 approach to radiocarbon calibration curve construction : a new methodology using Bayesian splines and errors-in-variables. Radiocarbon, 62(4), 821-863.
Muscheler R, Adolphi F, Heaton TJ, Bronk Ramsey C, Svensson A, van der Plicht J & Reimer PJ (2020) Testing and improving the IntCal20 calibration curve with independent records. Radiocarbon, 62(4), 1079-1094.
Bayliss A, Marshall P, Dee MW, Friedrich M, Heaton TJ & Wacker L (2020) IntCal20 tree rings: an archaeological Swot analysis. Radiocarbon, 62(4), 1045-1078.
Gardiner C, Laud P, Heaton T & gott M (2020) What is the prevalence of loneliness amongst older people living in residential and nursing care homes? A systematic review and meta-analysis. Age And Ageing. View this article in WRRO
Butzin M, Heaton TJ, Köhler P & Lohmann G (2020) A short note on marine reservoir age simulations used in IntCal20. Radiocarbon, 62(4), 865-871.
Afitska O & Heaton TJ (2019) Mitigating the effect of language in the assessment of science: A study of English‐language learners in primary classrooms in the United Kingdom. Science Education, 103(6), 1396-1422. View this article in WRRO
Wardrope A, Jamnadas-Khoda J, Broadhurst M, Grünewald RA, Heaton TJ, Howell SJ, Koepp M, Parry SW, Sisodiya S, Walker MC & Reuber M (2019) Machine learning as a diagnostic decision aid for patients with transient loss of consciousness. Neurology: Clinical Practice. View this article in WRRO
Hogg AG, Heaton TJ, Ramsey CB, Boswijk G, Palmer JG, Turney CSM, Southon J & Gumbley W (2019) The influence of calibration curve construction and composition on the accuracy and precision of radiocarbon wiggle-matching of tree rings, illustrated by Southern Hemisphere atmospheric data sets from ad 1500–1950. Radiocarbon. View this article in WRRO
Muschitiello F, D’Andrea WJ, Schmittner A, Heaton TJ, Balascio NL, deRoberts N, Caffee MW, Woodruff TE, Welten KC, Skinner LC , Simon MH et al (2019) Deep-water circulation changes lead North Atlantic climate during deglaciation. Nature Communications, 10. View this article in WRRO
Silberzahn R, Uhlmann EL, Martin DP, Anselmi P, Aust F, Awtrey E, Bahník VS, Bai F, Bannard C, Bonnier E , Carlsson R et al (2018) Many analysts, one dataset: making transparent how variations in analytical choices affect results. Advances in Methods and Practices in Psychological Science, 1(3), 337-356. View this article in WRRO
Pearson CL, Brewer PW, Brown D, Heaton TJ, Hodgins GWL, Timothy Jull AJ, Lange T & Salzer MW (2018) Annual radiocarbon record indicates 16th century BCE date for the Thera eruption. Science Advances, 4(8). View this article in WRRO
Evers L & Heaton TJ (2017) Locally Adaptive Tree-Based Thresholding Using the treethresh Package in R. Journal of Statistical Software, 78. View this article in WRRO
James S, Bell OA, Nazli MAM, Pearce RE, Spencer J, Tyrrell K, Paine PJ, Heaton TJ, Anderson S, Da Lio M & Gurney K (2017) Target-distractor synchrony affects performance in a novel motor task for studying action selection.. PLoS One, 12(5), e0176945-e0176945. View this article in WRRO
Heaton TJ & Freeth M (2016) Reduced visual exploration when viewing photographic scenes in individuals with autism spectrum disorder. Journal of Abnormal Psychology, 125(3), 399-411. View this article in WRRO
Heaton TJ & Chico V (2016) Attitudes towards the sharing of genetic information with at-risk relatives: results of a quantitative survey. Human Genetics, 135(1), 109-120. View this article in WRRO
Heaton TJ, Bard E & Hughen KA (2013) Elastic tie-pointing-transferring chronologies between records via a Gaussian process. Radiocarbon, 55(4), 1975-1997.
Reimer PJ, Bard E, Bayliss A, Beck JW, Blackwell PG, Bronk Ramsey C, Buck CE, Cheng H, Edwards RL, Friedrich M , Grootes PM et al (2013) IntCal13 and Marine13 radiocarbon age calibration curves 0-50,000 years cal BP. Radiocarbon, 55(4), 1869-1887.
Niu M, Heaton TJ, Blackwell PG & Buck CE (2013) The Bayesian approach to radiocarbon calibration curve estimation: The IntCal13, Marine13, and SHCal13 methodologies. Radiocarbon, 55(4), 1905-1922.
Reimer PJ, Bard E, Bayliss A, Beck JW, Blackwell PG, Ramsey CB, Brown DM, Buck CE, Edwards RL, Friedrich M , Grootes PM et al (2013) SELECTION AND TREATMENT OF DATA FOR RADIOCARBON CALIBRATION: AN UPDATE TO THE INTERNATIONAL CALIBRATION (INTCAL) CRITERIA. RADIOCARBON, 55(4), 1923-1945.
Bard E, Ménot G, Rostek F, Licari L, Böning P, Edwards RL, Cheng H, Wang Y & Heaton TJ (2013) Radiocarbon calibration/comparison records based on marine sediments from the Pakistan and Iberian margins. Radiocarbon, 55(4), 1999-2019.
Hogg AG, Hua Q, Blackwell PG, Niu M, Buck CE, Guilderson TP, Heaton TJ, Palmer JG, Reimer PJ, Reimer RW , Turney CSM et al (2013) Shcal13 Southern Hemisphere calibration, 0-50,000 years cal BP. Radiocarbon, 55(4), 1889-1903.
Evers L & Heaton TJ (2009) Locally adaptive tree-based thresholding. Journal of Computational and Graphical Statistics, 18(4), 961-977.
Heaton TJ (2009) Adaptive thresholding of sequences with locally variable strength.. Stat. Comput., 19, 57-71.
Reimer PJ, Baillie MGL, Bard E, Bayliss A, Beck JW, Blackwell PG, Ramsey CB, Buck CE, Burr GS, Edwards RL , Friedrich M et al (2009) INTCAL09 AND MARINE09 RADIOCARBON AGE CALIBRATION CURVES, 0-50,000 YEARS CAL BP. RADIOCARBON, 51(4), 1111-1150. View this article in WRRO
Heaton TJ, Blackwell PG & Buck CE (2009) A BAYESIAN APPROACH TO THE ESTIMATION OF RADIOCARBON CALIBRATION CURVES: THE INTCAL09 METHODOLOGY. RADIOCARBON, 51(4), 1151-1164. View this article in WRRO
Heaton TJ & Silverman BW (2008) A wavelet- or lifting-scheme-based imputation method. Journal of the Royal Statistical Society: Series B (Statistical Methodology), 70, 567-587.
Hogg AG, Heaton TJ, Hua Q, Palmer JG, Turney CSM, Southon J, Bayliss A, Blackwell PG, Boswijk G, Bronk Ramsey C , Pearson C et al () SHCal20 SOUTHERN HEMISPHERE CALIBRATION, 0–55,000 YEARS CAL BP. Radiocarbon, 1-20.
Bronk Ramsey C, Heaton TJ, Schlolaut G, Staff RA, Bryant CL, Brauer A, Lamb HF, Marshall MH & Nakagawa T () REANALYSIS OF THE ATMOSPHERIC RADIOCARBON CALIBRATION RECORD FROM LAKE SUIGETSU, JAPAN. Radiocarbon, 1-11.
Heaton TJ & Freeth M () Reduced visual exploration when viewing photographic scenes in individuals with Autism Spectrum Disorder. Journal of Abnormal Psychology.
van der Plicht J, Bronk Ramsey C, Heaton TJ, Scott EM & Talamo S () Recent developments in calibration for archaeological and environmental samples. Radiocarbon, 1-23. View this article in WRRO
Blackwell P, Reimer PJ, Heaton T & (and 39 others) () The IntCal20 Northern Hemisphere radiocarbon age calibration curve (0-55 kcal BP). Radiocarbon. View this article in WRRO
Heaton TJ, Köhler P, Butzin M, Bard E, Reimer RW, Austin WEN, Bronk Ramsey C, Grootes PM, Hughen KA, Kromer B , Reimer PJ et al () MARINE20—THE MARINE RADIOCARBON AGE CALIBRATION CURVE (0–55,000 CAL BP). Radiocarbon, 1-42.
Heaton TJ () Non-parametric calibration of multiple related radiocarbon determinations and their calendar age summarisation.

Research group: Statistics

Grants

Past grants, as Principal Investigator
Automated tuning of palaeoclimate records	EPSRC