Subtropical North Atlantic Alkenone Sea Surface Temperature Reconstruction
Entry ID: NOAA_NCDC_PALEO_2006-052

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Summary
Abstract: A reconstruction of sea surface temperature based on alkenone unsaturation
ratios in sediments of the Bermuda Rise provides a detailed record of
subtropical climate from 60,000 to 30,000 years ago. Northern Sargasso Sea
temperatures changed repeatedly by 2 to 5C, covarying with high-latitude
temperatures that were previously inferred from Greenland ice cores. The
largest temperature increases were comparable in magnitude to the full
glacial-Holocene warming at the site. Abrupt cold reversals of 3 to 5C, lasting
less than 250 years, occurred during the onset of two such events (Greenland
interstadials 8 and 12), suggesting that the largest, most rapid warmings were
especially unstable.
Related URL
Description: Access to documentation and data files
Geographic Coverage
Spatial coordinates   
  N: 33.69   S: 33.69   E: -57.57   W: -57.57
Max Depth: 4462 M

Data Set Citation
Dataset Originator/Creator: Sachs, J.P. and S.J. Lehman
Dataset Title: Subtropical North Atlantic Alkenone Sea Surface Temperature Reconstruction
Dataset Series Name: IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2006-052
Dataset Release Date: 5/2006
Dataset Release Place: Boulder, CO
Dataset Publisher: IGBP PAGES/World Data Center for Paleoclimatology
Issue Identification: 2006-052
Other Citation Details: NOAA/NCDC Paleoclimatology Program
Online Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleocean/by_contributor/sac...
Paleo Temporal Coverage
Paleo Start Date: 60000 ybp
Paleo Stop Date: 30000 ybp
Chrono Unit:
ISO Topic Category
Data Set Progress
COMPLETE
Originating Center
Data Center
World Data Center for Paleoclimatology, Boulder Supplemental Info
Data Center URL: http://www.ncdc.noaa.gov/paleo/

Data Center Personnel
Name: WDC/PALEOCLIMATOLOGY, BOULDER
Phone: +1 (303) 497-6160
Fax: +1 (303) 497-6513
Email: paleo at noaa.gov
Contact Address:
World Data Center for Paleoclimatology
NOAA/NCDC Code E/GCx3
325 Broadway
City: Boulder
Province or State: CO
Postal Code: 80303
Country: USA
Distribution
Distribution Media: ftp
Distribution Format: text, excel
Fees: none
Personnel
Role: INVESTIGATOR
Phone: 206-221-5630
Email: jsachs at u.washington.edu
Contact Address:
University of Washington
Ocean Sciences Building, Room 521
Box 355351
City: Seattle
Province or State: WA
Postal Code: 98195-5351
Country: USA
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Publications/References
Sachs, J.P. and S.J. Lehman. 1999. Subtropical North Atlantic Temperatures
60,000 to 30,000 Years Ago. Science, Vol. 286, pp. 756 - 759, 22 October 1999.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2006-12-22
Last DIF Revision Date: 2009-01-21
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