Eastern Tropical Atlantic Alkenones and Sea Surface TemperaturesEntry ID: NOAA_NCDC_PALEO_2004-027
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.
(Click for Interactive Map)
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 ProgramOnline 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
Data Set Progress
Distribution Media: ftp
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