Erika E McPhee-Shaw, Western Washington University, Department of Environmental Sciences, Bellingham, WA, United States, Amy Frances Waterhouse, Scripps Institution of Oceanography, La Jolla, CA, United States, Eric L Kunze, U of Washington, Seattle, WA, United States, James B Girton, Applied Physics Laboratory, University of Washington, Seattle, WA, United States and Jingping Xu, Southern University of Science and Technology (SUSTech), Department of Ocean Science & Engineering, Guangdong, China