NGRIP 50-year Average

50-year averaged oxygen isotope data from the North Greenland Ice Core Project (ss09sea time scale).

Usage

ngrip2004

Format

A data.frame with 4918 observations and 2 variables:

age

integer: calendar age (years before 2000 AD), ss09sea time scale.

delta

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

Source

https://www.ncei.noaa.gov/access/paleo-search/study/2481

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, ngrip2010, spratt2016

Other isotopic data: lisiecki2005, ngrip2010, nydal1996, spratt2016, vegetation

Examples

plot(
  x = ngrip2004$age / 1000,
  y = ngrip2004$delta,
  type = "l",
  xlim = c(120, 0),
  xlab = "ss09sea (ka b2k)",
  ylab = expression(delta^{18}*"O")
)