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Eastern Tropical Atlantic Alkenones and Sea Surface Temperatures Entry ID: NOAA_NCDC_PALEO_2004-027 |
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Summary
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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. |
Related URL
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Link:
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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
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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
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Paleo Start Date:
84 ka
Paleo Stop Date: 0 ka Chrono Unit: |
Location Keywords
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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
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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
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World Data Center for Paleoclimatology, Boulder
[Information]
Data Center URL: http://www.ncdc.noaa.gov/paleo/
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Distribution
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Distribution_Media:
ftp
Fees: none |
Personnel
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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.
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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