Revisiting the isotope effect of nitrate assimilation in the Antarctic Zone: Insights into glacial-interglacial variations in surface nitrate concentrations

Fran├žois Fripiat1, Alfredo Martinez-Garcia1, Fawcett Sarah2, Anja S Studer1, Sandi Smart3, Florian Rubach1, Preston Cosslett Kemeny4, Sergey Oleynik5, Daniel Mikhail Sigman5 and Gerald H Haug1, (1)Max Planck Institute for Chemistry, Mainz, Germany, (2)University of Cape Town, Oceanography, Cape Town, South Africa, (3)Stellenbosch University, Department of Earth Sciences, Matieland, South Africa, (4)California Institute of Technology, Pasadena, CA, United States, (5)Princeton University, Princeton, NJ, United States