Robert G Spencer, Florida State University, Earth, Ocean and Atmospheric Sciences, Tallahassee, FL, United States, Karen E Frey, Clark University, Graduate School of Geography, Worcester, MA, United States, Laurence C Smith, Brown University, Department of Earth, Environmental and Planetary Sciences (DEEPS), Providence, United States, Anne Kellerman, Florida State University, Department of Earth, Ocean & Atmospheric Science, Tallahassee, United States, Amy M McKenna, Florida State University, National High Magnetic Field Laboratory, Tallahassee, United States and Sommer Starr, Trent University, Peterborough, Canada