Helena Frazão^1,2, Uwe Send³, Todd R Martz¹, Adrienne J Sutton⁴, Mark D Ohman⁵ and Matthias J Lankhorst⁶, (1)Scripps Institution of Oceanography, La Jolla, United States, (2)Leibniz Institute for Baltic Sea Research, Rostock, Germany, (3)Scripps Institution of Oceanography, University of California San Diego, San Diego, United States, (4)NOAA Pacific Marine Environmental Laboratory, Seattle, United States, (5)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (6)UCSD, La Jolla, CA, United States