Accession Number : AD0813397

Title :   BIRDS EYE 9-66 21 NOVEMBER-11 DECEMBER.

Descriptive Note : Informal manuscript,

Corporate Author : NAVAL OCEANOGRAPHIC OFFICE NSTL STATION MS

Personal Author(s) : Haggerty, J. J., III

Report Date : MAR 1967

Pagination or Media Count : 103

Abstract : BIRDS EYE 9-66 observations were scheduled to take advantage of optimum moonlight over the arctic basin. Overall ice concentrations in the arctic basin had reached a maximum of ten-tenths with vast floes being the predominant form and representing an increase in concentration over BIRDS EYE 8-66. Also, considerably more medium floes had been observed during the previous BIRDS EYE. An increase of concentration to ten tenths in Alaskan coastal waters represented an increase of two to three tenths from the previous BIRDS EYE. Normal seasonal increases in ice concentrations occurred along the remaining tracks. Comparison of BIRDS EYE 9-66 data with data for a similar period of 1965 reveals that ice concentrations over the arctic basin were much the same. In east Greenland waters, ice concentrations were two to four tenths lighter than they were during the same period during 1965. The BIRDS EYE 9-66 mission included repeat tracks in the arctic basin after a period of 8 days in order to record short-period changes in ice conditions. Most water opendings were refrozen with very little open water observed on the initial tracks; however, numerous new openings were observed on repeated tracks during and after the passage of a well-developed low-pressure system. Many new topographic features were noted. Flying conditions were generally poor. Clouds obscuring the moon hampered water opening and ridge counts. (Author)

Descriptors :   *ARCTIC REGIONS), *ARCTIC OCEAN), (*ICE, (*WEATHER FORECASTING, MARINE METEOROLOGY, SEA ICE, ICE ISLANDS, DISTRIBUTION, SOURCES, COASTAL REGIONS, SEA WATER, POLAR REGIONS, GREENLAND, TERRAIN, CLIMATE, DIURNAL VARIATIONS, ALASKA, AERIAL RECONNAISSANCE, PLAN POSITION INDICATORS, PHOTOGRAPHIC RECORDING SYSTEMS, MOON, ILLUMINATION.

Subject Categories : Meteorology
      Snow, Ice and Permafrost

Distribution Statement : APPROVED FOR PUBLIC RELEASE