Arabian Sea NIOP905 87KYr Benthic Stable Isotope Data Jung, S.J.A.; Kroon, D.; Ganssen, G.; Peeters, F.J.C.; Ganeshram, R.S. Jung, S.J.A. Kroon, D. Ganssen, G. Peeters, F.J.C. Ganeshram, R.S. Heinrich Events Meridional Overturning Circulation (MOC) earth science/paleoclimate/paleoceanography (delta 18O,Cibicides kullenbergi,null,per mil PDB,null,paleoceanography,averaged,null,N,700-year running mean) earth science/paleoclimate/paleoceanography (age,null,null,calendar kiloyear before present,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 13C,Cibicides kullenbergi,null,per mil PDB,null,paleoceanography,averaged,null,N,700-year running mean) earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean (NIOP905>LATITUDE 10.7669>LONGITUDE 51.9511) During the last glacial period, polar ice cores indicate climate asynchrony between the poles at the millennial time-scale. Yet, surface ocean circulation in large parts of the globe varied in tune with Greenland temperature fluctuations suggesting that any anti-phase behavior to a substantial degree must lie in the deeper global ocean circulation which is poorly understood outside the Atlantic Ocean. Here we present data from the north-western Indian Ocean which indicate that the timing of maxima in northward extensions of glacial Antarctic Intermediate Water (GAAIW) coincides with dramatically reduced thermohaline overturn in the North Atlantic associated with the Heinrich-ice surge events (HE). The repeated expansion of the GAAIW during HEs, recorded far north of the equator in the Arabian Sea, suggests that southern hemisphere driven intermediate water mass variability forms an integral part of the inter-hemisphere asynchronous climate change behavior at the millennial time-scale. STUDY NOTES: Benthic oxygen and carbon isotope data from the northwestern Arabian Sea measured on the epibenthic foraminifera C. kullenbergi. The data are from NIOP (Netherlands Indian Ocean Programme) Core 905, retrieved from the continental slope off Somalia in 1993 from a water depth of 1580 m. The age model is taken from Ivanochko 2005. Oxygen and carbon isotope records are based on averages of multiple single specimen analysis of the epibenthic foraminifera C. kullenbergi. In a few limited cases Cibicidoides spp. were used to avoid gaps in the record where C. kullenbergi was rare. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Jung, S.J.A. Investigator : Kroon, D. Investigator : Ganssen, G. Investigator : Peeters, F.J.C. Investigator : Ganeshram, R.S. 2010-04-13 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/10489 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jung2009/jung2009.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jung2009/jung2009.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jung2009/jung2009.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jung2009/jung2009.txt English https://www.ncdc.noaa.gov/paleo/study/10489 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jung2009/jung2009.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jung2009/jung2009.txt Jung, S.J.A., D. Kroon, G. Ganssen, F. Peeters, and R. Ganeshram. 2009. Enhanced Arabian Sea intermediate water flow during glacial North Atlantic cold phases. Earth and Planetary Science Letters, Vol. 280, pp. 220-228. doi:10.1016/j.epsl.2009.01.037 START YEAR: 87582 cal yr BP * END YEAR: 956 cal yr BP 51.9511 10.7669 51.9511 10.7669