1. Department of Earth Science Education; Seoul National University; Seoul South Korea
2. Department of Geological Sciences, Jackson School of Geosciences; University of Texas at Austin; Austin Texas USA
3. Center for Space Research; University of Texas at Austin; Austin Texas USA
4. National Snow and Ice Data Center; University of Colorado Boulder; Boulder Colorado USA
5. Division of Polar Earth System Sciences; Korea Polar Research Institute; Incheon South Korea
6. Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA