New and improved radiocarbon calibration curves
The radiocarbon dating method has many applications, from archaeology to forensics to name but two. But raw radiocarbon dates need corrected (calibrated) before they make sense as commonly understood calendar dates. Tree-ring dating has supplied the primary reference data used to calibrate radiocarbon dates, and now researchers form the LTRR (notably Charlotte Pearson) are contributors to the new internationally agreed standards for radiocarbon calibration, known as IntCal20, which have just been released.
University of Arizona News Story
Researchers Unlock Secrets of the Past with New International Carbon Dating Standard (by Mikayla Mace)
News review in Nature
Carbon dating, the archaeological workhorse, is getting a major reboot (by Nicola Jones)
Northern Hemisphere calibration
Reimer, P., Austin, W., Bard, E., Bayliss, A., Blackwell, P., Bronk Ramsey, C., . . . Talamo, S. (2020). THE INTCAL20 NORTHERN HEMISPHERE RADIOCARBON AGE CALIBRATION CURVE (0–55 CAL kBP). Radiocarbon, 1-33. doi:10.1017/RDC.2020.41
Southern Hemisphere calibration
Hogg, A., Heaton, T., Hua, Q., Palmer, J., Turney, C., Southon, J., . . . Wacker, L. (2020). SHCal20 SOUTHERN HEMISPHERE CALIBRATION, 0–55,000 YEARS CAL BP. Radiocarbon, 1-20. doi:10.1017/RDC.2020.59
Related article with an LTRR first author
Pearson, C., Wacker, L., Bayliss, A., Brown, D., Salzer, M., Brewer, P., . . . Hodgins, G. (2020). ANNUAL VARIATION IN ATMOSPHERIC 14C BETWEEN 1700 BC AND 1480 BC. Radiocarbon, 1-14. doi:10.1017/RDC.2020.14
Local newspaper article
'Revolutionary' radiocarbon dating gets even more accurate with UA help (by Henry Brean)
Interview with Charlotte Pearson
Sharpening the tools of time: A Q&A with dendrochronologist Charlotte Pearson (by Mikayla Mace)