noaa-ocean-19723 Central Equatorial Pacific Dust Flux Reconstruction 110-150 ka Jacobel, A.W.; McManus, J.F.; Anderson, R.F.; Winckler, G. Central Equatorial Pacific Dust Flux Reconstruction 110-150 ka 2016-01-25 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/19723 Investigator A.W. Jacobel Investigator J.F. McManus Investigator R.F. Anderson Investigator G. Winckler 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 geochemistry earth science paleoclimate paleocean radiogenic isotope earth science paleoclimate paleocean reconstruction geoscientificInformation Atmospheric and Oceanic Circulation Patterns Reconstruction Intertropical Convergence Zone (ITCZ) 149900 cal yr BP 110600 cal yr BP Complete .4815 7.0436 -161.634717 -156.448167 -2926 -2798 Ocean Pacific Ocean Central Pacific Ocean ML1208-31>LATITUDE 4.682867>LONGITUDE -160.051883 Ocean Pacific Ocean Central Pacific Ocean ML1208-37>LATITUDE 7.0436>LONGITUDE -161.634717 Ocean Pacific Ocean Central Pacific Ocean ML1208-17>LATITUDE .4815>LONGITUDE -156.448167 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. 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

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Boulder CO 80305-3328 USA online ASCII Jacobel, A.W., J.F. McManus, R.F. Anderson, and G. Winckler 2016 Nature Communications 7 10.1038/ncomms10449

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

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jacobel2016/jacobel2016-17pc.txt Formatted Text File; ML1208-17PC Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jacobel2016/jacobel2016-31bb.txt Formatted Text File; ML1208-31BB Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jacobel2016/jacobel2016-37bb.txt Formatted Text File; ML1208-37BB Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11