Alice S Ren, Woods Hole Oceanographic Institution, Physical Oceanography, Woods Hole, United States; Arizona State University, Tempe, United States, Robert E Todd, Woods Hole Oceanographic Institution, Physical Oceanography, Woods Hole, MA, United States, Ying-Tsong Lin, Scripps Institution of Oceanography, La Jolla, United States and William Harris, Naval Surface Warfare Center Carderock Division, UNITED STATES