noaa-ocean-2619
Western Pacific Warm Pool Pleistocene paired d18O-Mg/Ca and SST Reconstruction
de Garidel-Thoron, T.; Rosenthal, Y.; Bassinot, F.C.; Beaufort, L.
Western Pacific Warm Pool Pleistocene paired d18O-Mg/Ca and SST Reconstruction
2005-07-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/2619
Investigator
T.
de Garidel-Thoron
Investigator
Y.
Rosenthal
Investigator
F.C.
Bassinot
Investigator
L.
Beaufort
earth science
paleoclimate
paleoceanography
depth,null,null,centimeter,null,paleoceanography,composited,null,N,null
earth science
paleoclimate
paleoceanography
delta 18O,Globigerinoides ruber pink,null,per mil PDB,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
magnesium/calcium,Globigerinoides ruber,null,dimensionless,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
age,null,null,radiocarbon year before present,null,paleoceanography,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleoceanography
sea surface temperature,magnesium/calcium,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,"Globigerinoides ruber, white, 250-300mm"
earth science
paleoclimate
paleoceanography
depth,null,null,centimeter,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleocean
trace metals in carbonates
earth science
paleoclimate
paleocean
oxygen isotopes
earth science
paleoclimate
paleocean
other
earth science
paleoclimate
paleocean
reconstruction
earth science
paleoclimate
paleocean
age control
geoscientificInformation
Sea Surface Temperature Reconstruction
1755 14C yr BP
6 14C yr BP
1685 cal yr BP
0 cal yr BP
Complete
2.03
2.03
141.77
141.77
-2547
-2547
Ocean
Pacific Ocean
North Pacific Ocean
MD97-2140>LATITUDE 2.03>LONGITUDE 141.77
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
de Garidel-Thoron, T., Y. Rosenthal, F.C. Bassinot, and L. Beaufort. 2005. Stable sea surface temperatures in the western Pacific warm pool over the past 1.75 million years. Nature 433, No.7023, 294-298.
About 850,000 years ago, the period of the glacial cycles changedfrom 41,000 to 100,000 years. This mid-Pleistocene climate transition has been attributed to global cooling, possibly causedby a decrease in atmospheric carbon dioxide concentrations. However, evidence for such cooling is currently restricted to thecool upwelling regions in the eastern equatorial oceans, although the tropical warm pools on the western side of the ocean basins are particularly sensitive to changes in radiativeforcing. Here we present high-resolution records of sea surface temperatures spanning the past 1.75 million years, obtained from oxygen isotopes and Mg/Ca ratios in planktonic foraminifera from the western Pacific warm pool. In contrast with the eastern equatorial regions, sea surface temperatures in the westernPacific warm pool are relatively stable throughout the Pleistocene epoch, implying little long-term change in the tropical net radiation budget. Our results challenge the hypothesis of a gradual decrease in atmospheric carbon dioxide concentrationsas a dominant trigger of the longer glacial cycles since 850,000 years ago. Instead, we infer that the temperature contrast across the equatorial Pacific Ocean increased, which might have had a significant influence on the mid-Pleistocene climate transition.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/md972140-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/degaridel-thoron2005
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11