GICC05modelext timescale for the gas and ice phase of the GISP2 and GRIP ice cores (0-104 ka b2k) and various data series
A mirrored version of the xlsx file and a raw text version are available from WDC Paleo.
This data file accompanies the following two papers:
Seierstad et al. (2014):
Consistently dated records from the Greenland GRIP, GISP2 and NGRIP ice cores for the past 104 ka reveal regional millennial-scale δ18O gradients with possible Heinrich event imprint.
doi:10.1016/j.quascirev.2014.10.032
Rasmussen et al. (2014):
A stratigraphic framework for abrupt climatic changes during the Last Glacial period based on three synchronized Greenland ice-core records: refining and extending the INTIMATE event stratigraphy.
doi:10.1016/j.quascirev.2014.09.007
Download an Excel version of Table 2 of this paper
The data file (xlsx format) contains
- Match points between the GRIP, GISP2, NGRIP1 and NGRIP2 cores.
- NGRIP, GRIP and GISP2 δ18O and calcium concentration resampled to 20 yrs and 50 yrs resolution on the GICC05modelext timescale.
- GRIP δ18O resampled to 0.55 m ("bag") resolution on the GICC05modelext timescale.
- A GICC05modelext depth-age scale to be used with publicly available GISP2 ion concentration data.
- GRIP and GISP2 GICC05modelext gas timescale.
- Compilations of GRIP and GISP2 CH4 concentration and δ15N of N2 on the GICC05modelext gas timescale.
d18O data:
Grootes, P.M., Stuiver, M., 1997. Oxygen 18/16 variability in Greenland snow and ice with 10-3- to 105-year
time resolution. Journal of Geophysical Research 102, 26455-26470.
Johnsen, S.J., Clausen, H.B., Dansgaard, W., Gundestrup, N.S., Hammer, C.U., Andersen, U., Andersen, K.K.,
Hvidberg, C.S., Dahl-Jensen, D., Steffensen, J.P., Shoji, H., Sveinbjörnsdóttir, Á.E., White, J., Jouzel, J., Fisher,
D., 1997. The δ18O record along the Greenland Ice Core Project deep ice core and the problem of possible
Eemian climatic instability. Journal of Geophysical Research 102, 26397-26410.
North Greenland Ice Core Project members, 2004. High-resolution record of Northern Hemisphere climate
extending into the last interglacial period. Nature 431, 147-151.
Stuiver, M., Grootes, P.M., 2000. GISP2 oxygen isotope ratios. Quaternary Research 53, 277-284.
Python3 code
drawing climate diagram in python 3
version 2.11
11.9.2020
import matplotlib.pyplot as plt
import numpy as np
import pandas as pd
from matplotlib.ticker import (MultipleLocator, AutoMinorLocator)
Minä, tämän teoksen tekijänoikeudellinen omistaja, julkaisen tämän teoksen public domainiin eli luovun kaikista tekijänoikeuksista lain sallimissa puitteissa. Tämä on voimassa maailmanlaajuisesti. Joissain maissa laki ei mahdollista tätä. Mikäli näin on: Myönnän kenelle tahansa oikeuden käyttää tätä teosta mihin tahansa tarkoitukseen, ilman mitään ehtoja, ellei laki vaadi ehtojen asettamista.
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{{Information |Description=8200 event in NGROP delta-O18 curve. X-axis, time before past in years. Y-axis, delta-O!8 in NGRIP sample. Delte-O!( depends on temperature, up is warmer, down is colder in this image, so higher delta-018 means colder in Greenla
{{Information |Description=8200 kyr cold event seen in NGRIP corve, time goes from right to left, numbers thousand of uears ago down is colder, up is warmer. |Source=self-made |Date=3.12.2007 |Author= Merikanto |Permission={{PD-Own}} |o