Central Equatorial Pacific Dust Flux Reconstruction 110-150 ka Jacobel, A.W.; McManus, J.F.; Anderson, R.F.; Winckler, G. Jacobel, A.W. McManus, J.F. Anderson, R.F. Winckler, G. Atmospheric and Oceanic Circulation Patterns Reconstruction Intertropical Convergence Zone (ITCZ) earth science/paleoclimate/paleoceanography (age,null,null,calendar kiloyear before present,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (dust,sediment,null,gram per square centimeter per kiloyear,null,paleoceanography,normalized,isotope dilution mass spectrometry,N,230Thxs converted to dust fluxes; normalized 232Th fluxes) earth science/paleoclimate/paleoceanography (dust,sediment,two standard deviations,gram per square meter per year,null,paleoceanography,normalized,isotope dilution mass spectrometry,N,230Thxs converted to dust fluxes; normalized 232Th fluxes) 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 (ML1208-31>LATITUDE 4.682867>LONGITUDE -160.051883) (ML1208-37>LATITUDE 7.0436>LONGITUDE -161.634717) (ML1208-17>LATITUDE .4815>LONGITUDE -156.448167) The position of the Intertropical Convergence Zone (ITCZ) is sensitive to changes in the balance of heat between the hemispheres, which has fundamental implications for tropical hydrology and atmospheric circulation. Although the ITCZ is thought to experience the largest shifts in position during deglacial stadial events, the magnitude of shifts has proven difficult to reconstruct, in part because of a paucity of high-resolution records, particularly those including spatial components. Here, we track the position of the ITCZ from 150-110 ka at three sites in the central equatorial Pacific at sub-millennial time resolution. Our results provide the first evidence of large, abrupt changes in tropical climate during the penultimate deglaciation, coincident with North Atlantic Heinrich Stadial 11 (~136-129 ka). We identify this event both as a northern hemisphere increase in aeolian dust and as a shift in the mean position of the ITCZ a minimum of four degrees southwards at 160°W. STUDY NOTES: 230Thxs,0-normalized 232Th fluxes converted to dust fluxes; Note: Age-depth relationships for cores ML1208-37BB, 31BB and 17PC were developed on the basis of planktonic oxygen isotope stratigraphies (dataset: noaa-ocean-1001374), which were tied to the LR04 benthic stack with the assistance of a modified Monte-Carlo-enabled cross-correlation maximization scheme and random walk algorithm (MonteXCM). Provided Keywords: Younger Dryas, glacial,thorium, dust NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Jacobel, A.W. Investigator : McManus, J.F. Investigator : Anderson, R.F. Investigator : Winckler, G. 2016-01-25 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/19723 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jacobel2016/jacobel2016-17pc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jacobel2016/jacobel2016-31bb.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jacobel2016/jacobel2016-37bb.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jacobel2016/jacobel2016-17pc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jacobel2016/jacobel2016-31bb.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jacobel2016/jacobel2016-37bb.txt English https://www.ncdc.noaa.gov/paleo/study/19723 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jacobel2016/jacobel2016-17pc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jacobel2016/jacobel2016-31bb.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jacobel2016/jacobel2016-37bb.txt Jacobel, A.W., J.F. McManus, R.F. Anderson, and G. Winckler2016Large Deglacial Shifts of the Pacific Intertropical Convergence ZoneNature Communications710.1038/ncomms10449 START YEAR: 149900 cal yr BP * END YEAR: 110600 cal yr BP -161.634717 .4815 -156.448167 7.0436