(3) Requested and received through the U. S. Weather Bureau special weather observations from Truk, Ponape, Majuro and Wake. (4) Increased the number of daily upper air observations at Eniwetok and Kwajalein weather stations, (5) Operated an aerial weather reconnaissance squadron of ten W8-50's from Eniwetok, which flew a minimum of two twelve-hour missions daily over selected routes at altitudes from 1500 to 30,000 feet, (6) Received weather information from all Naval task farce ships, (7) Supported the development of and used special weather sounding balloons which penetrated the tropical tropopause to an average height of 90,000 feet. (8) Supported the development of and successfully used high-altitude sounding rockets to rapidly obtain wind velocities above 100,000 feet. The heads of these rockets contained metal foil (window) which was emitted at preselected altitudes to provide a radar target, The rockets were launched from task force destroyers which had special launchers installed and special modifications to the fire control radars and computers which enabled them to acquire and track these targets. c. Forecasts prepared by the Weather Central were used by the Staff Weather Officers and the Fallout Prediction Unit in their weather-fallout presentations, These briefings were given to the Commander, Joint Task Force SEVEN at frequent intervals prior to each shot. In addition, the Weather Central disseminated weather forecasts and information to all operating units ‘COPIED/DOE of the task force, ad. LANL RS Because of the peculiar meteorological conditions in the tropical Pacific Ocean areas, special techniques are required for forecasting the weather in these areas. It is therefore necessary that meteorologists have special training in these techniques before they can cope with the problems associated therewith. Following Operation CASTLE in 1954 this training was obtained for task force meteorologists through liaison with the Oahu Research Center, Hawaii, The task force is now in the process of establishing a similar center in association with the University of Hawaii which will study weather forecasting problems at the PPG, The mission of this center will be to test 17

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