Atmospheric CO2 and Climate: Taylor Dome Ice Core, Antarctica

Summary

Using new and existing ice core CO2 data from 65 - 30 ka BP, a new chronology for Taylor Dome ice core CO2 is established and synchronized with Greenland ice core records to study how high latitude climate change and the carbon cycle were linked during the last glacial period. The new data and chronology should provide a better target for models attempting to explain CO2 variability and abrupt climate change. Data are available in Microsoft Excel format and are available via FTP.

Citing These Data

We kindly request that you cite the use of this data set in a publication using the following citation example. For more information, see our Use and Copyright Web page.

Ahn, Jinho and Ed Brook . 2007. Atmospheric CO2 Taylor Dome Ice Core, Antarctica. Boulder, Colorado USA: National Snow and Ice Data Center. http://dx.doi.org/10.7265/N5542KJK.

Overview Table

Category Description
Data format Microsoft Excel
Spatial coverage and resolution Southernmost Latitude: 77.66° S
Northernmost Latitude: 77.66° S
Westernmost Longitude: 158.00° E
Easternmost Longitude: 158.00° E
Elevation - 1530 m

Temporal coverage and resolution 65 to 30 ka BP
File naming convention TD-CO2-on-GISP2 age-Ahn-Brook-June23-2007.xls
File size Approximately 32 KB.
Parameter(s) Carbon dioxide (CO2)
Procedures for obtaining data available via FTP

Table of Contents

1. Contacts and Acknowledgments
2. Detailed Data Description
3. Data Access and Tools
4. Data Acquisition and Processing
5. References and Related Publications
6. Document Information

1. Contacts and Acknowledgments

Investigator(s)

Jinho Ahn
Department of Geosciences
Oregon State University
104 Wilkinson Hall
Corvallis, Oregon 97331 USA 

Ed Brook
Department of Geosciences
Oregon State University
104 Wilkinson Hall
Corvallis, Oregon 97331 USA 

Technical Contact

NSIDC User Services
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder, CO 80309-0449  USA
phone: +1 303.492.6199
fax: +1 303.492.2468
form: Contact NSIDC User Services
e-mail: nsidc@nsidc.org

Acknowledgements

This research was supported by National Science Foundation (NSF) Office of Polar Programs (OPP) grant 0337891 awarded to E. Brook.

2. Detailed Data Description

Format

Data files are in Microsoft Excel format viewable with spreadsheet software and an Adobe Acrobat PDF .

File Naming Convention

Files are named according to the following convention.

File name File Size Description 
TD-CO2-on-GISP2 age-Ahn-Brook-June23-2007.xls 32 KB  Microsoft Excel File 

Spatial Coverage

Southernmost Latitude: 77.66° S
Northernmost Latitude: 77.66° S
Westernmost Longitude: 158.00° E
Easternmost Longitude: 158.00° E

Parameter or Variable

Parameter Description

The measured parameter is CO2 at various depths in the ice core.

Parameter Range

Carbon dioxide (CO2): 201.79 parts per million by volume (ppmv) to 224.99 ppmv.

Sample Data Record

The data below are the first 10 data samples showing Taylor Dome CO2 records.

Depth
GT4 age
Ahn-07
CO2
+/-
   
GISP2 age
   
(m)
(kyr BP)
(kyr BP)
(ppmv)
(ppmv)
388.515
25.769
30.5315
191.1
0.5
389.7
26.471
31.2335
193.5
0.8
390.71
27.038
31.8005
196.8
0.5
391.63
27.529
32.2915
199.6
0.6
392.62
28.032
32.5953
199.1
0.2
393.545
28.478
32.8792
200.4
0.6
395.32
29.274
33.424
200.2
0.3
396.42
29.73
33.7616
200.1
0.7
396.975
29.949
33.932
201.6
0.5
397.64
30.203
34.1361
200.9
0.6

Data Access

Available via FTP 

Volume

The data set is approximately 32 KB.

Related Data Collections

4. Data Acquisition and Processing

Sensor or Instrument Description

Agilent 6890N Gas Chromatograph

Data Acquisition Methods

The CO2 mixing ratio was measured with an Agilent 6890N Gas Chromatograph (GC) with flame ionization detector, with nickel catalyst conversion of CO2 to CH4 prior to measurement.

5. References and Related Publications

Ahn, Jinho and Ed Brook. 2007. Atmospheric CO2 and climate from 65 to 30 ka B.P. Geophysical Research Letters. 34, L10703, doi:10.1029/2007GL029551.                  

6. Document Information

Acronyms and Abbreviations

The following acronyms and abbreviations are used in this document.

FTP File Transfer Protocol
NSIDC National Snow and Ice Data Center
ka BP thousand years before present
CO2  Carbon Dioxide
URL Uniform Resource Locator

Document Creation Date

October 2007

Document URL

http://nsidc.org/data/docs/agdc/nsidc0314_ahn/index.html