Radiocarbon calibration curves

Radiocarbon calibration requires a calibration curve: an estimate of the true calendar age associated with a radiocarbon measurement. The following curves are included with the c14 package:

IntCal20: IntCal Northern Hemisphere curve, 0–55,000 cal BP Reimer2020c14.
SHCal20: IntCal Southern Hemisphere curve, 0–55,000 cal BP Hogg2020c14.
Marine20: IntCal marine curve, 0–55,000 cal BP Heaton2020c14.
IntCal13, IntCal09, IntCal04, IntCal98: Previous IntCal Northern Hemisphere curves Reimer2013,Reimer2009,Reimer2004,Stuiver1998c14. Superseded by IntCal20.
SHCal13, SHCal04: Previous IntCal Southern Hemisphere curves Hogg2013,McCormac2004c14. Superseded by SHCal20.
Marine13, Marine09, Marine04, Marine98: Previous IntCal marine curves Reimer2013,Reimer2009,Hughen2004,Stuiver1998c14. Superseded by Marine20.

Generally, it is recommended to use the latest curve from the IntCal series: IntCal20 for samples from the northern hemisphere; SHCal20 for samples from the southern hemisphere; or Marine20 for samples that obtained their 14C in a marine environment.

Usage

IntCal20

SHCal20

Marine20

IntCal13

SHCal13

Marine13

IntCal09

Marine09

IntCal04

SHCal04

Marine04

IntCal98

Marine98

Format

A c14_curve object with the following fields.

For standard curves:

cal_age: Calendar ages with associated era (era::yr class).
c14_age: Uncalibrated radiocarbon ages.
c14_error: Errors (sigma values) associated with c14_age.
d14c: Delta-14C values.
d14c_error: Errors (sigma values) associated with d14c.

For post-bomb curves:

cal_age: Calendar ages with their associated era (era::yr class).
f14c: Fraction modern (F14C or pMC) values.
f14c_error: Errors (sigma values) associated with f14c.

An object of class c14_curve_14c (inherits from c14_curve, vctrs_rcrd, vctrs_vctr) of length 9501.

An object of class c14_curve_14c (inherits from c14_curve, vctrs_rcrd, vctrs_vctr) of length 5501.

An object of class c14_curve_14c (inherits from c14_curve, vctrs_rcrd, vctrs_vctr) of length 5141.

An object of class c14_curve_14c (inherits from c14_curve, vctrs_rcrd, vctrs_vctr) of length 4801.

An object of class c14_curve_14c (inherits from c14_curve, vctrs_rcrd, vctrs_vctr) of length 3522.

An object of class c14_curve_14c (inherits from c14_curve, vctrs_rcrd, vctrs_vctr) of length 3651.

An object of class c14_curve_14c (inherits from c14_curve, vctrs_rcrd, vctrs_vctr) of length 3302.

An object of class c14_curve_14c (inherits from c14_curve, vctrs_rcrd, vctrs_vctr) of length 2482.

An object of class c14_curve_14c (inherits from c14_curve, vctrs_rcrd, vctrs_vctr) of length 3301.

An object of class c14_curve_14c (inherits from c14_curve, vctrs_rcrd, vctrs_vctr) of length 1538.

An object of class c14_curve_14c (inherits from c14_curve, vctrs_rcrd, vctrs_vctr) of length 1569.

Source

http://intcal.org/curves/ and http://calib.org/CALIBomb/

Usage

Format

Source

References