Defining the nitrogen isotopic signature of equatorial Pacific El Niño Southern Oscillation events over the last 150 years

Anna Golub1, Alan Foreman2, Nicolas Duprey2, Alfredo Martinez-Garcia2, Christopher D Charles1 and Gerald Haugh2, (1)Scripps Institution of Oceanography, La Jolla, United States, (2)Max Planck Institute for Chemistry, Climate Geochemistry, Mainz, Germany