Lawrence J Pratt, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Irina Rypina, WHOI, Woods Hole, MA, United States, Samuel Entner, Wentworth Institution of Technology, United States, Deepak Cherian, National Center for Atmospheric Research, Earth, Atmosphere and Planetary Sciences, Boulder, MA, United States and Amanda Anderson, University of Kansas, United States