Eastern Tropical Atlantic Alkenones and Sea Surface Temperatures
Entry ID: NOAA_NCDC_PALEO_2004-027

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Summary
Abstract: The molecular stratigraphy of BOFS core 31K and ODP Hole 658C has been studied
for C37 alkenone abundances over the past 80 ka at high resolution (~circa
200-500 years). The derived Uk37 sea surface temperature record for both
cores shows a range of temperatures from about 18C during the last glacial to
21.5C during the early Holocene. Both records also reveal changes in SST as
much as 2C - 4C over a few hundred years, which correlate well with similar
abrupt climatic changes observed in cores from elsewhere in the NE Atlantic,
associated with "Heinrich events". Our results indicate that meltwater produced
by these ice-rafting events was transmitted southward by the Canary Current,
where it had considerable impact on SSTs in the subtropical eastern Atlantic.

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Link: GET DATA
Description: Access to data and documentation.


Geographic Coverage
 N: 20.45 S: 20.45  E: -18.35  W: -18.35
 Max Depth: 2263M
 N: 19.0 S: 19.0  E: -20.1  W: -20.1
 Max Depth: 3300M

Data Set Citation
Dataset Originator/Creator: Meixun Zhao
Dataset Title: Eastern Tropical Atlantic Alkenones and Sea Surface Temperatures
Dataset Series Name: IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2004-027
Dataset Release Date: 2004-05
Dataset Release Place: Boulder, CO
Dataset Publisher: IGBP PAGES/World Data Center for Paleoclimatology
Issue Identification: 2004-027
Other Citation Details: NOAA/NCDC Paleoclimatology Program
Online Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleocean/by_contributor/zha...


Paleo_Temporal_Coverage
Paleo Start Date: 84 ka
Paleo Stop Date: 0 ka
Chrono Unit:


Location Keywords
OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN
CONTINENT > AFRICA > coastal northwest Africa


Science Keywords
PALEOCLIMATE >LAND RECORDS >GLACIATION    [Definition]
PALEOCLIMATE >OCEAN/LAKE RECORDS >SEDIMENTS    [Definition]
PALEOCLIMATE >PALEOCLIMATE RECONSTRUCTIONS >SEA SURFACE TEMPERATURE RECONSTRUCTION    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
GEOSCIENTIFIC INFORMATION
OCEANS


Project
PAGES >Past Global Changes, IGBP    [Information]


Keywords
Glaciation
Sea Surface
Temperature
Sediment


Data Set Progress
COMPLETE


Originating Center
NOAA/NCDC


Data Center
World Data Center for Paleoclimatology, Boulder    [Information]
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
Fees: none


Personnel
MEIXUN ZHAO
Role: INVESTIGATOR


Publications/References
Zhao, M., N.A.S. Beveridge, N.J. Shackleton, M. Sarnthein, and G. Eglinton.
1995. Molecular stratigraphy of cores off northwest Africa: Sea surface
temperature history over the last 80 ka. Paleoceanography. 10(3): 661-675.

Creation and Review Dates
DIF Creation Date: 2006-12-29
Last DIF Revision Date: 2007-08-10

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