Northern Hemisphere atmospheric radiocarbon for the pre-bomb period

Description

Northern Hemisphere atmospheric radiocarbon calibration curve for the period 0 to 50,000 yr BP.

Usage

data(IntCal09)

Format

A data frame with 3522 observations on the following 5 variables.

CAL.BP

Calibrated age in years Before Present (BP).

C14.age

C14 age in years BP.

Error

Error estimate for C14.age.

Delta.14C

Delta.14C value in per mil.

Sigma

Standard deviation of Delta.14C in per mil.

Details

Deltal.14C is age-corrected as per Stuiver and Polach (1977). All details about the derivation of this dataset are provided in Reimer et al. (2009).

References

P. Reimer, M.Baillie, E. Bard, A. Bayliss, J. Beck, P. Blackwell, C. Ramsey, C. Buck, G. Burr, R. Edwards, et al. 2009. IntCal09 and Marine09 radiocarbon age calibration curves, 0 - 50,000 years cal bp. Radiocarbon, 51(4):1111 - 1150.

M. Stuiver and H. A. Polach. 1977. Rerporting of C-14 data. Radiocarbon, 19(3):355 - 363.

Examples

par(mfrow=c(2,1))
plot(IntCal09$CAL.BP, IntCal09$C14.age, type="l")
polygon(x=c(IntCal09$CAL.BP,rev(IntCal09$CAL.BP)),
	y=c(IntCal09$C14.age+IntCal09$Error,rev(IntCal09$C14.age-IntCal09$Error)),
	col="gray",border=NA)
lines(IntCal09$CAL.BP,IntCal09$C14.age)

plot(IntCal09$CAL.BP,IntCal09$Delta.14C,type="l")
polygon(x=c(IntCal09$CAL.BP,rev(IntCal09$CAL.BP)),
	y=c(IntCal09$Delta.14C+IntCal09$Sigma,rev(IntCal09$Delta.14C-IntCal09$Sigma)),
	col="gray",border=NA)
lines(IntCal09$CAL.BP,IntCal09$Delta.14C)
par(mfrow=c(1,1))