Logan Fusso, New Mexico Institute of Mining and Technology, Socorro, NM, United States, Ronni Grapenthin, University of California Berkeley, Berkeley, CA, United States, Benedikt Ofeigsson, Icelandic Meteorological Office, Reykjavik, Iceland and Freysteinn Sigmundsson, University of Iceland, Nordic Volcanological Center, Institute of Earth Sciences, Reykjavik, Iceland