noaa-recon-10354
Subantarctic Atlantic and Subarctic Pacific 3.6 Ma Alkenone SST Reconstructions
Martínez-Garcia, A.; Rosell-Melé, A.; McClymont, E.L.; Gersonde, R.; Haug, G.H.
Subantarctic Atlantic and Subarctic Pacific 3.6 Ma Alkenone SST Reconstructions
2011-01-12
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/10354
Investigator
A.
Martínez-Garcia
Investigator
A.
Rosell-Melé
Investigator
E.L.
McClymont
Investigator
R.
Gersonde
Investigator
G.H.
Haug
earth science
paleoclimate
climate reconstructions|paleoceanography
age,null,null,calendar kiloyear before present,null,climate reconstructions|paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
C37:4 alkenone,null,null,percent,null,paleoceanography,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleoceanography
sea surface temperature,alkenone unsaturation index,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,null
earth science
paleoclimate
reconstructions
sea surface temperature
geoscientificInformation
Sea Surface Temperature Reconstruction
3642410 cal yr BP
0 cal yr BP
Complete
-42.908333
50.35
8.9
167.5833
-3702
-3244
Ocean
Pacific Ocean
North Pacific Ocean
ODP 882>LATITUDE 50.35>LONGITUDE 167.5833
Ocean
Atlantic Ocean
South Atlantic Ocean
ODP 1090>LATITUDE -42.908333>LONGITUDE 8.9
None
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English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Martínez-Garcia, A., A. Rosell-Melé, E.L. McClymont, R. Gersonde, and G.H. Haug. 2010. Subpolar Link to the Emergence of the Modern Equatorial Pacific Cold Tongue. Science, Vol. 328, No. 5985, pp. 1550-1553. DOI:10.1126/science.1184480
The cold upwelling "tongue" of the eastern equatorial Pacific
is a central energetic feature of the ocean, dominating both
the mean state and temporal variability of climate in the tropics
and beyond. Recent evidence for the development of the modern
cold tongue during the Pliocene-Pleistocene transition has been
explained as the result of extratropical cooling that drove
a shoaling of the thermocline. We have found that the sub-Antarctic
and sub-Arctic regions underwent substantial cooling nearly
synchronous to the cold tongue development, thereby providing
support for this hypothesis. In addition, we show that sub-Antarctic
climate changed in its response to Earth's orbital variations,
from a subtropical to a subpolar pattern, as expected if cooling
shrank the warm-water sphere of the ocean and thus contracted
the subtropical gyres.
STUDY NOTES: Two Subpolar paleotemperature records for the past 3.6 million years
based on the analysis of alkenone unsaturation indices in marine
sediments. Cores are located in the sub-Arctic Pacific (ODP Site 882)
and the sub-Antarctic Atlantic (ODP Site 1090). The percentage of
the C37:4 alkenone relative to the total abundance of C37 alkenones
(%C37:4) in these records is an additional tracer that can be used
to infer variations in the meridional extent of polar and subpolar
conditions through time.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/martinez-garcia2010/martinez-garcia2010.xls
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/martinez-garcia2010/martinez-garcia2010.txt
USA/NOAA
DIF
Version 9.8.4
2019-04-29
2019-04-29