Atmospheric CO2 and Climate: Byrd Ice Core, Antarctica

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Entry ID

NSIDC-0314

Summary

Reconstructions of ancient atmospheric CO2 variations help us better understand how the global carbon cycle and climate are linked. Here we compare CO2 variations on millennial time scales between 20,000 and 90,000 years with an Antarctic temperature proxy and records of abrupt climate change in the northern hemisphere. CO2 and Antarctic temperature are positively correlated over millennial-scale climate cycles, implying a strong connection to southern ocean processes. Evidence from marine sediment proxies indicates that CO2 rose most rapidly when North Atlantic Deep Water shoaled and stratification in the Southern Ocean was reduced. These increases in CO2 occurred during stadial (cold) periods in the northern hemisphere, several thousand years before abrupt warming events in Greenland. Data are available in Microsoft Excel format and are available via FTP.

Data Set Citation

Dataset Creator: Ahn, J.
Dataset Title: Atmospheric CO2 and Climate: Byrd Ice Core, Antarctica
Dataset Release Date: 2007-10-31
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: National Snow and Ice Data Center (NSIDC)
Data Presentation Form: Digital media
Online Resource: http://nsidc.org/data/nsidc-0314.html

Paleo Temporal Coverage

Paleo Start Date: 90 ka bp
Paleo Stop Date: 20 ka bp

Location Keywords

• Continent Antarctica

Science Keywords

• Cryosphere Snow/Ice
• Cryosphere Snow/Ice Snow/Ice Chemistry
• Terrestrial Hydrosphere Snow/Ice
• Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry

Ancillary Keywords

• Atmospheric Chemistry
• Atmospheric CO2
• Atmospheric Gases
• Climate
• Climate Change
• Climate Research
• Ice Core
• Ice Core Chemistry
• Ice Core Data
• Ice Core Gas Records
• Ice Cores

ISO Topic Category (View Definitions)

• Climatology/Meteorology/Atmosphere

Instrument

• CORING DEVICES

Data Set Progress

COMPLETE

Originating Center

Antarctic Glaciological Data Center

Data Center

NSIDC Antarctic Glaciological Data Center
Data Center URL: http://nsidc.org/agdc/

Data Center Personnel

Name: NSIDC AGDC User Services
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc@nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

Distribution

Distribution Media: FTP
Distribution Size: 45 KB
Distribution Format: Microsoft Excel

Personnel

Jinho Ahn
Role: INVESTIGATOR
Phone: 541-737-1377
Email: ahnji@geo.oregonstate.edu
Contact Address:
Oregon State University
Department of Geosciences
008 Wilkinson Hall
City: Corvallis
Province or State: OR
Postal Code: 97331-5506
Country: USA

Edward J Brook
Role: INVESTIGATOR
Phone: 541-737-8197
Email: brooke@geo.oregonstate.eduedu
Contact Address:
Oregon State University
Department of Geosciences
104 Wilkinson Hall
City: Corvallis
Province or State: OR
Postal Code: 97331-5506
Country: USA

Related URL

GET DATA

Reference

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

Ahn, J. and Brook, E.J. Atmospheric CO2 and climate change on millennial time scales during the last glacial period, Science, 322, 83-85, doi: 10.1126/science.1160832 (2008)

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2007-10-22
Last DIF Revision Date: 2008-10-13

DIF Text-Only

Directory Interchange Format (DIF) in plain text

DIF XML

Directory Interchange Format (DIF) in Extensible Markup Language (XML)

FGDC HTML

U.S. Federal Geographic Data Committee (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM)