ccurve: Copy a calibration curve

In Maarten14C/IntCal: Radiocarbon Calibration Curves

Copy a calibration curve

Description

Copy one of the calibration curves into memory.

Usage

ccurve(cc = 1, postbomb = FALSE, cc.dir = NULL, resample = 0, glue = FALSE)

Arguments

cc	Calibration curve for 14C dates: cc=1 for IntCal20 (northern hemisphere terrestrial), cc=2 for Marine20 (marine), cc=3 for SHCal20 (southern hemisphere terrestrial). Alternatively, one can also write, e.g., "IntCal20", "Marine13". One can also make a custom-built calibration curve, e.g. using mix.ccurves(), and load this using cc=4. In this case, it is recommended to place the custom calibration curve in its own directory, using cc.dir (see below).
postbomb	Use postbomb=TRUE to get a postbomb calibration curve (default postbomb=FALSE). For monthly data, type e.g. ccurve("sh1-2_monthly")
cc.dir	Directory of the calibration curves. Defaults to where the package's files are stored (system.file), but can be set to, e.g., cc.dir="ccurves".
resample	The IntCal curves come at a range of 'bin sizes'; every year from 0 to 5 kcal BP, then every 5 yr until 15 kcal BP, then every 10 yr until 25 kcal BP, and every 20 year thereafter. The curves can be resampled to constant bin sizes, e.g. resample=5. Defaults to FALSE.
glue	If a postbomb curve is requested, it can be 'glued' to the pre-bomb curve. This feature is currently disabled - please use glue.ccurves instead

Details

Copy the radiocarbon calibration curve defined by cc into memory.

Value

The calibration curve (invisible).

References

Hammer and Levin 2017, "Monthly mean atmospheric D14CO2 at Jungfraujoch and Schauinsland from 1986 to 2016", heiDATA: Heidelberg Research Data Repository V2 \Sexpr[results=rd]{tools:::Rd_expr_doi("10.11588/data/10100")}

Heaton et al. 2020 Marine20-the marine radiocarbon age calibration curve (0-55,000 cal BP). Radiocarbon 62, 779-820, \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1017/RDC.2020.68")}

Hogg et al. 2013 SHCal13 Southern Hemisphere Calibration, 0-50,000 Years cal BP. Radiocarbon 55, 1889-1903, \Sexpr[results=rd]{tools:::Rd_expr_doi("10.2458/azu_js_rc.55.16783")}

Hogg et al. 2020 SHCal20 Southern Hemisphere calibration, 0-55,000 years cal BP. Radiocarbon 62, 759-778, \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1017/RDC.2020.59")}

Hua et al. 2013 Atmospheric radiocarbon for the period 1950-2010. Radiocarbon 55(4), \Sexpr[results=rd]{tools:::Rd_expr_doi("10.2458/azu_js_rc.v55i2.16177")}

Hua et al. 2022 Atmospheric radiocarbon for the period 1950-2019. Radiocarbon 64(4), 723-745, \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1017/RDC.2021.95")}

Levin and Kromer 2004 The tropospheric 14CO2 level in mid latitudes of the Northern Hemisphere. Radiocarbon 46, 1261-1272

Reimer et al. 2004 IntCal04 terrestrial radiocarbon age calibration, 0-26 cal kyr BP. Radiocarbon 46, 1029-1058, \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1017/S0033822200032999")}

Reimer et al. 2009 IntCal09 and Marine09 radiocarbon age calibration curves, 0-50,000 years cal BP. Radiocarbon 51, 1111-1150, \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1017/S0033822200034202")}

Reimer et al. 2013 IntCal13 and Marine13 radiocarbon age calibration curves 0-50,000 years cal BP. Radiocarbon 55, 1869-1887, \Sexpr[results=rd]{tools:::Rd_expr_doi("10.2458/azu_js_rc.55.16947")}

Reimer et al. 2020 The IntCal20 Northern Hemisphere radiocarbon age calibration curve (0-55 cal kBP). Radiocarbon 62, 725-757, \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1017/RDC.2020.41")}

Stuiver et al. 1998 INTCAL98 radiocarbon age calibration, 24,000-0 cal BP. Radiocarbon 40, 1041-1083, \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1017/S0033822200019123")}

Examples

intcal20 <- ccurve(1)
marine20 <- ccurve(2)
shcal20 <- ccurve(3)
marine98 <- ccurve("Marine98")
pb.sh3 <- ccurve("sh3")

Maarten14C/IntCal documentation built on Oct. 11, 2023, 1:25 a.m.