Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: 20121217
Edition:
Geospatial_Data_Presentation_Form:
Series_Information:
Series_Name:
Issue_Identification:
Publication_Information:
Publication_Place:
Publisher:
Other_Citation_Details:
Online_Linkage:
Description:
Abstract:
Antarctic ice cores provide clear evidence of a close coupling between variations in Antarctic temperature and the atmospheric concentration of CO2 during the glacial/interglacial cycles of at least the past 800-thousand years. Precise information on the relative timing of the temperature and CO2 changes can assist in refining our understanding of the physical processes involved in this coupling. Here, we focus on the last deglaciation, 19 000 to 11 000 yr before present, during which CO2 concentrations increased by ~80 parts per million by volume and Antarctic temperature increased by ~10 degrees C. Utilising a recently developed proxy for regional Antarctic temperature, derived from five near-coastal ice cores and two ice core CO2 records with high dating precision, we show that the increase in CO2 likely lagged the increase in regional Antarctic temperature by less than 400 yr and that even a short lead of CO2 over temperature cannot be excluded. This result, consistent for both CO2 records, implies a faster coupling between temperature and CO2 than previous estimates, which had permitted up to millennial-scale lags. This work was done as part of project AAS 757. DESCRIPTION The regional Antarctic temperature proxy data series is avaliable elsewhere: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/antarctica2011iso.txt The locations and original references for the CO2 data and transfers to the GICC05 timescale are as follows: Byrd Location: 80 degrees 01'S 119 degrees 31'W Elevation: 1530 m asl Reference for transfer to GICC05 timescale: Pedro et al., Clim. Past. 8, 2012. Reference for CO2 data: (1) Neftel, A., Oeschger, H., Staffelbach, T., and Nature, 331, 609-11, doi:10.1038/331609a0, 1988. (2) Staffelbach, T., Stauffer, B., Sigg, A., and Oeschger, H.: CO2 measurements from polar ice cores - More data from different sites, Tellus B, 43, 91-6, doi:10.1034/j.1600-0889.1991.t01-1- 00003.x, 1991. Siple Dome Location: 81 degrees 40'S 148 degrees 49'W Elevation: 621 m asl Reference for transfer to GICC05 timescale: Pedro et al., Clim. Past. 8, 2012. Reference for CO2 data: Ahn, J., Wahlen, M., Deck, B. L., Brook, E. J., Mayewski, P. A., Taylor, K. C., and White, J. W. C.: A record of atmospheric CO2 during the last 40,000 years from the Siple Dome, Antarctica ice core, J. Geophys. Res., 109, D13305, doi:10.1029/2003JD004415, 2004.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Pedro, J. B., Rasmussen, S. O., and van Ommen, T. D. 2012 Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation Clim. Past 8 1213-221 doi:10.5194/cp-8-1213-2012 www.clim-past.net/8/1213/2012/
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20120722
Ending_Date: 20120722
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 119.5167
East_Bounding_Coordinate: 119.5167
North_Bounding_Coordinate: -80.0167
South_Bounding_Coordinate: -80.0167
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 148.8167
East_Bounding_Coordinate: 148.8167
North_Bounding_Coordinate: -81.6667
South_Bounding_Coordinate: -81.6667
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > CLIMATE INDICATORS > PALEOCLIMATE INDICATORS > ICE CORE RECORDS > CARBON DIOXIDE
Theme_Keyword: Ice Core
Theme_Keyword: Drilling
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > ANTARCTICA
Place_Keyword: GEOGRAPHIC REGION > POLAR
Access_Constraints: These data are publicly available for download at the provided URL.
Use_Constraints:
This data set conforms to the PICCCBY Attribution License (http://creativecommons.org/licenses/by/3.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=Byrd-SipleDome-CO2-GICC05 when using these data.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: JOEL PEDRO
Contact_Position: INVESTIGATOR
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Antarctic Climate and Ecosystems CRC
Address: University of Tasmania
Address: Grosvenor St
City: Sandy Bay
State_or_Province: Tasmania
Postal_Code: 7005
Country: Australia
Contact_Voice_Telephone: +61 3 6226 7853
Contact_Facsimile_Telephone: +61 3 6226 2981
Contact_Electronic_Mail_Address: jbpedro@utas.edu.au
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Not Available
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: AU/AADC > Australian Antarctic Data Centre, Australia
Contact_Person: DATA OFFICER AADC
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Australian Antarctic Division
Address: 203 Channel Highway
City: Kingston
State_or_Province: Tasmania
Postal_Code: 7050
Country: Australia
Contact_Voice_Telephone: +61 3 6232 3244
Contact_Facsimile_Telephone: +61 3 6232 3351
Contact_Electronic_Mail_Address: metadata@aad.gov.au
Resource_Description: Byrd-SipleDome-CO2-GICC05
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Excel
Transfer_Size: 16 kb
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://data.aad.gov.au
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://data.aad.gov.au/aadc/portal/download_file.c...
Access_Instructions:
Download point for the data
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://secure3.aad.gov.au/proms/public/projects/s...
Access_Instructions:
Public information for ASAC project 757
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://data.aad.gov.au/aadc/metadata/citation.cfm?...
Access_Instructions:
Citation reference for this metadata record and dataset
Fees: Free
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Metadata_Reference_Information:
Metadata_Date: 20121216
Metadata_Review_Date: 20130108
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: JASON ANDERSON
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Antarctic CRC
Address: University of Tasmania
Address: Grosvenor St
City: Sandy Bay
State_or_Province: Tasmania
Postal_Code: 7005
Country: Australia
Contact_Electronic_Mail_Address: jason.anderson@utas.edu.au
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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