摘要: Between 1953 and 1974 the Naval Oceanographic Office (NAVOCEANO) presented historical synoptic ice data gathered during U.S. Navy, U.S. Coast Guard, and Danish polar operations conducted from 1952 through 1971 in its annual report... 展开 Between 1953 and 1974 the Naval Oceanographic Office (NAVOCEANO) presented historical synoptic ice data gathered during U.S. Navy, U.S. Coast Guard, and Danish polar operations conducted from 1952 through 1971 in its annual reports of both the Arctic and Antarctic ice observing and forecasting programs (Naval Oceanographic Office, 1953-1974). These publications provided in chart form ice conditions observed by aerial reconnaissance and interpreted from satellite imagery for the eastern and western sectors of the North American Arctic and in selected portions of the seas surrounding the Antarctic Continent. These series of reports terminated with the 1969 and 1971 annual reports for the Antarctic and Arctic, respectively. This supplement lists all available microfilm imagery of ice data gathered and subsequently added to the Aerial Ice Reconnaissance and Satellite Ice Information Microfilm File during calendar year 1976. 收起