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50-year averaged oxygen isotope data from the North Greenland Ice Core Project.

Usage

ngrip2004

Format

A data.frame with 2 variables:

age

Calendar age (years before 2000 AD).

delta

\(\delta^{18}O\) (per mil).

References

North Greenland Ice Core Project members (2004). High-resolution record of Northern Hemisphere climate extending into the last interglacial period. Nature, 431(7005), 147-151. doi:10.1038/nature02805

See also

Other palaeoenvironment data: epica2008, law2006, lisiecki2005, spratt2016

Other isotopic data: lisiecki2005, nydal1996, spratt2016

Examples

plot(
  x = ngrip2004$age / 1000,
  y = ngrip2004$delta,
  type = "l",
  xlim = c(120, 0),
  xlab = "kilo year b2k",
  ylab = expression(delta^{18}*"O")
)