Florida Strait Nd Isotopic Ratio Data over the last 25,000 Years Xie, R.C.; Marcantonio, F.; Schmidt, M.W. Xie, R.C. Marcantonio, F. Schmidt, M.W. earth science/paleoclimate/paleoceanography (143Nd/144Nd,sediment,unspecified margin of error,dimensionless,null,paleoceanography,null,null,N,detrital sediment) earth science/paleoclimate/paleoceanography (age,null,null,calendar kiloyear before present,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (143Nd/144Nd,sediment,null,dimensionless,null,paleoceanography,null,null,N,Fe-Mn oxyhydroxide fraction) earth science/paleoclimate/paleoceanography (143Nd/144Nd,sediment,unspecified margin of error,dimensionless,null,paleoceanography,null,null,N,Fe-Mn oxyhydroxide fraction) earth science/paleoclimate/paleoceanography (epsilon neodymium,sediment,null,epsilon unit,null,paleoceanography,null,null,N,detrital sediment) earth science/paleoclimate/paleoceanography (epsilon neodymium,sediment,null,epsilon unit,null,paleoceanography,null,null,N,Fe-Mn oxyhydroxide fraction) earth science/paleoclimate/paleoceanography (age,sediment,null,calendar kiloyear before present,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (143Nd/144Nd,sediment,two standard deviations,dimensionless,null,paleoceanography,null,null,N,Fe-Mn oxyhydroxide fraction) earth science/paleoclimate/paleoceanography (epsilon neodymium,sediment,one standard deviation,epsilon unit,null,paleoceanography,null,null,N,Fe-Mn oxyhydroxide fraction) earth science/paleoclimate/paleoceanography (143Nd/144Nd,sediment,null,dimensionless,null,paleoceanography,null,null,N,detrital sediment) earth science/paleoclimate/paleoceanography (epsilon neodymium,sediment,one standard deviation,epsilon unit,null,paleoceanography,null,null,N,detrital sediment) earth science/paleoclimate/paleoceanography (143Nd/144Nd,sediment,two standard deviations,dimensionless,null,paleoceanography,null,null,N,detrital sediment) earth science/paleoclimate/paleocean (KNR166-2-26JPC>LATITUDE 24.326833>LONGITUDE -83.252333) (KNR166-2-31JPC>LATITUDE 24.216667>LONGITUDE -83.3) Understanding intermediate water circulation across the last deglacial is critical in assessing the role of oceanic heat transport associated with Atlantic Meridional Overturning Circulation variability across abrupt climate events. However, the links between intermediate water circulation and abrupt climate events such as the Younger Dryas (YD) and Heinrich Event 1 (H1) are still poorly constrained. Here, we reconstruct changes in Antarctic Intermediate Water (AAIW) circulation in the subtropical North Atlantic over the past 25 kyrs by measuring authigenic neodymium isotope ratios in sediments from two sites in the Florida Straits. Our authigenic Nd isotope records suggest that there was little to no penetration of AAIW into the subtropical North Atlantic during the YD and H1. Variations in the northward penetration of AAIW into the Florida Straits documented in our authigenic Nd isotope record are synchronous with multiple climatic archives, including the Greenland ice core δ18O record, the Cariaco Basin atmosphere ∆14C reconstruction, the Bermuda Rise sedimentary Pa/Th record, and nutrient and stable isotope data from the tropical North Atlantic. The synchroneity of our Nd records with multiple climatic archives suggests a tight connection between AAIW variability and high-latitude North Atlantic climate change. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Xie, R.C. Investigator : Marcantonio, F. Investigator : Schmidt, M.W. 2014-10-27 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/17372 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/xie2012-poc/xie2012-poc-26jpc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/xie2012-poc/xie2012-poc-31jpc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/xie2012-poc/xie2012-poc-26jpc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/xie2012-poc/xie2012-poc-31jpc.txt English https://www.ncdc.noaa.gov/paleo/study/17372 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/xie2012-poc/xie2012-poc-26jpc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/xie2012-poc/xie2012-poc-31jpc.txt Xie, R.C., F. Marcantonio, and M.W. Schmidt2012Deglacial variability of the penetration of Antarctic Intermediate Water into the North Atlantic from authigenic neodymium isotope ratiosPaleoceanography27PA322110.1029/2012PA002337 START YEAR: 24360 cal yr BP * END YEAR: 710 cal yr BP -83.3 24.216667 -83.252333 24.326833