NGRIP 20-year Average

20-year averaged oxygen isotope data from the North Greenland Ice Core Project (GICC05 time scale).

Usage

ngrip2010

Format

A data.frame with 6114 observations and 4 variables:

age

integer: calendar age (years before 2000 AD), GICC05 time scale (or GICC05modelext when going beyond 60 ka b2k).

depth

numeric: depth (meters).

delta

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

MCE

numeric: maximum counting error (years).

Source

https://www.iceandclimate.nbi.ku.dk/data/

Note

Use the labels GICC05 (or GICC05modelext when going beyond 60 ka b2k) on graphs.

References

Vinther, B. M., Clausen, H. B., Johnsen, S. J., Rasmussen, S. O., Andersen, K. K., Buchardt, S. L., Dahl-Jensen, D., Seierstad, I. K., Siggaard-Andersen, M.-L., Steffensen, J. P., Svensson, A. M., Olsen, J. & Heinemeier, J. (2006). A synchronized dating of three Greenland ice cores throughout the Holocene. Journal of Geophysical Research, 111, D13102. doi:10.1029/2005JD006921 .

Rasmussen, S. O., Andersen, K. K., Svensson, A. M., Steffensen, J. P., Vinther, B. M., Clausen, H. B., Siggaard-Andersen, M.-L., Johnsen, S. J., Larsen, L. B., Dahl-Jensen, D., Bigler, M., Röthlisberger, R., Fischer, H., Goto-Azuma, K., Hansson, M. E. & Ruth, U. (2006). A new Greenland ice core chronology for the last glacial termination. Journal of Geophysical Research, 111, D06102. doi:10.1029/2005JD006079 .

Andersen, K. K., Svensson, A., Johnsen, S. J., Rasmussen, S. O., Bigler, M., Röthlisberger, R., Ruth, U., Siggaard-Andersen, M.-L., Steffensen, J. P., Dahl-Jensen, D., Vinther, B. M. & Clausen, H.B. (2005). The Greenland Ice Core Chronology 2005, 15-42 ka. Part 1: Constructing the time scale. Quaternary Science Reviews, 25(23-24):3246-3257. doi:10.1016/j.quascirev.2006.08.002 .

Svensson, A., Andersen, K. K., Bigler, M., Clausen, H. B., Dahl-Jensen, D., Davies, S. M., Johnsen, S. J., Muscheler, R., Rasmussen, S. O., Röthlisberger, R., Seierstad, I., Steffensen, J. P. & Vinther, B. M. (2008). A 60,000 year Greenland stratigraphic ice core chronology. Climate of the Past, 4:47–57. doi:10.5194/cp-4-47-2008 .

Wolff, E. W., Chappellaz, J., Blunier, T., Rasmussen, S. O. & Svensson, A. (2010). Millennial-scale variability during the last glacial: The ice core record. Quaternary Science Reviews, 29:2828-2838. doi:10.1016/j.quascirev.2009.10.013 .

See also

Other palaeoenvironment data: epica2008, law2006, lisiecki2005, ngrip2004, spratt2016

Other isotopic data: lisiecki2005, ngrip2004, nydal1996, spratt2016, vegetation

Examples

plot(
  x = ngrip2010$age / 1000,
  y = ngrip2010$delta,
  type = "l",
  xlim = c(120, 0),
  xlab = "GICC05",
  ylab = expression(delta^{18}*"O")
)