Equatorial Pacific ODP 806 mid-Pleistocene Uk37 Data and SST Reconstruction McClymont, E.L.; Rosell-Melé, A. McClymont, E.L. Rosell-Melé, A. Sea Surface Temperature Reconstruction 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,alkenone unsaturation index,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (alkenone unsaturation index Uk37 prime,null,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (depth,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean (ODP 806B>LATITUDE .32>LONGITUDE 159.35) (2006-014>LATITUDE .18>LONGITUDE -110.52) Sea-surface temperatures (SSTs) reconstructed from Ocean Drilling Program Sites 806 and 849 in the western and eastern equatorial Pacific provide a history of the strength of the Walker circulation between 1.5 and 0.5 Ma. A progressive cooling in the eastern equatorial Pacific is paralleled by intensification of the equatorial zonal SST gradient that began 1.17 Ma, prior to the expansion of global ice volume associated with the mid-Pleistocene climate transition. The SSTs in the eastern equatorial Pacific and the zonal gradient reached modern values by 0.9 Ma. We propose that this onset and intensification of the modern Walker circulation reduced heat flux, but increased moisture transport to high latitudes, leading to the development of more extensive ice sheets and the shift toward the 100 ka world. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : McClymont, E.L. Investigator : Rosell-Melé, A. 2005-07-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/2643 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp849cd-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mcclymont2005 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp806b2-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp849cd-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mcclymont2005 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp806b2-tab.txt English https://www.ncdc.noaa.gov/paleo/study/2643 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp849cd-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mcclymont2005 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp806b2-tab.txt McClymont, E.L. and A. Rosell-Melé. 2005. Links between the onset of modern Walker circulation and the mid-Pleistocene climate transition. Geology, 33( 5), 389-392. START YEAR: 1502895 14C yr BP * END YEAR: 500000 14C yr BP -110.52 .18 159.35 .32