Multiple nitrogen isotope recorders for surface ocean nitrate utilization in the Subarctic North Pacific and the Bering Sea

Haojia Abby Ren, Department of Geosciences, National Taiwan University, Taipei, Taiwan, Robert Anderson, Columbia University, Department of Earth and Environmental Sciences, New York, NY, United States, Daniel Mikhail Sigman, Princeton University, Geosciences, Princeton, United States, Anja Studer, Max Planck Institute for Chemistry, Mainz, Germany, Gisela Winckler, Columbia U. / LDEO, Palisades, NY, United States, Gerald Haugh, Max Planck Institute for Chemistry, Climate Geochemistry, Mainz, Germany, Sascha Serno, CO2CRC, Canberra, Australia and Rainer Gersonde, AWI Bremerhaven, Bremerhaven, Germany