THEODORE SICKLEY, NGM STAFF. SOURCES: JAN LIESER, ANTARCTIC METEOROLOGICAL SERVICE, BUREAU OF METEOROLOGY, AUSTRALIA; DAVID G. LONG, ANTARCTIC ICEBERG TRACKING DATABASE, BRIGHAM YOUNG UNIVERSITY; BRITISH ANTARCTIC SURVEY; EUROPEAN SPACE AGENCY; NASA; NOAA; CHRISTOPHER READINGER, U.S. NATIONAL ICE CENTER