Christopher R German, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Kevin R Arrigo, Stanford University, Earth System Science, Stanford, CA, United States, Alison E Murray, Desert Research Institute Reno, Reno, NV, United States, Alyssa Rhoden, Arizona State University, Tempe, AZ, United States and Britney E Schmidt, Georgia Institute of Technology, School of Earth and Atmospheric Sciences, Atlanta, GA, United States