Expanding the carbonate-bound nitrogen isotope proxy to both poles (Arctic and Antarctic) in order to better understand climate changes of the past 5 million years

Joint appointment with Princeton University Department of Geosciences

Applied boron and radiocarbon proxies to deep-sea fossils to reconstruct how changes in deep ocean carbon cycling over the past 1 million yearsPublications from this research (contact for full-text):"Deep Atlantic Ocean carbon storage and the rise of 100,000 year glacial cycles" (2019): https://www.nature.com/articles/s41561-019-0334-6"Boric acid and borate incorporation in inorganic calcite inferred from B/Ca, boron isotopes and surface kinetic modeling" (2019): https://www.sciencedirect.com/science/article/abs/pii/S0016703718305829"Single laboratory comparison of MC-ICP-MS and N-TIMS boron isotope analyses in marine carbonates" (2016): https://www.sciencedirect.com/science/article/abs/pii/S0009254116306015"Growth rate determinations from radiocarbon in bamboo corals (genus Keratoisis)" (2015):http://www.sciencedirect.com/science/article/pii/S0967063715001405"Effects of seawater-pH and biomineralization on the boron isotopic composition of deep-sea bamboo corals" (2015): https://www.sciencedirect.com/science/article/abs/pii/S0016703715000290

I studied high-resolution records of Arctic Ocean paleoceanography over the past 7000 years, calibration of ostracode trace metal ratios to temperature for paleo-bottom water temperature reconstructions, and multidecadally-resolved records of late Holocene sea level rise.Publications from this research (contact for full-text):"Enhanced Arctic Amplification Began at the Mid-Brunhes Event ~400,000 years ago" (2017): https://www.nature.com/articles/s41598-017-13821-2"Late Holocene sea level variability and Atlantic Meridional Overturning Circulation" (2014):http://onlinelibrary.wiley.com/doi/10.1002/2014PA002632/full"Deep Arctic Ocean warming during the last glacial cycle" (2012):http://www.nature.com/ngeo/journal/v5/n9/full/ngeo1557.html"Ostracode Mg/Ca paleothermometry in the North Atlantic and Arctic oceans: Evaluation of a carbonate ion effect" (2012): http://onlinelibrary.wiley.com/doi/10.1029/2012PA002305/full"Western Arctic Ocean temperature variability during the last 8000 years" (2011):http://onlinelibrary.wiley.com/doi/10.1029/2011GL049714/full