UNCLASSIFIED SECURITY CL ABSIFICATION OF THIS PAGE (Wren Dare Entered READ INSTRUCTIONS BEFORE COMPLETING FORM REPORTDOCUMENTATION PAGE "REPORT NYQ-4645 (EX) 2. GOVT ACCESSION NO! 6. TITLE (and Subtitte) WORLD-WIDE FALLOUT FROM OPERATION CASTLE 3d. RECIPIENT'S CATALOG NUMOER 8. TYPE OF REPORT @ PEMOOD CovERED 6. PERFORMING OAG. REPORT NuMBER 7. NYQ-4645_ (EX) ©. CONTRACT OR GRANT NUMBERYs) auTHoR(e) Robert J. List 9. Aran 10. PROGRAM ELEMENT. PROJECT, TASK AREA &@ WORK UNIT NUMBERS PERFORMING ORGANIZATION NAME AND ACORESS Weather Bureau Washington, OD. C. 11. 42. CONTROLLING OFFICE NAME ANO AOORESS United States Atomic Energy Commission REPORT DATE May 17, 1955 Technical Information Service Oak Ridge, Tennessee VE. MONITORING AGENCY NAME & ADORESS(If aiflerent irom Controlling Olfice) 13. NUMBER OF PAGES 18. SECURITY CLASS. (of thia report) UNCLASSIFIED Se. DECL ASSIFIC ATION/ COWNGRADING SCHEOULE 16. CUSTRIBUTION STATEMENT fol this Report) Approved for public release; unlimited distribution. 4 17. 18. 19. OMTRIBUTION STATEMENT (of (Re abstract entered in Block 26, if dillerant trom Report) SUPPLEMENTARY NOTES This report has had the classified information removed and has been republished in unclassified form for public release. This work was performed by Kaman Tempo under contract DNA001-83-C-0286 with the close cooperation of the Classification Management Division of the Defense Nuclear Agency. KEY WORDS (Continue on reverse side if necessary and identify by black number) Operation CASTLE World-Wide Fallout 20. ABSTRACT (Continue on reverse side if necessary end identify by block number) A world-wide network of gummed film stations was established to monitor fallout following Operation Castle. Although meteorological data were poor, a general con- nection of tropospheric flow patterns with observed fallout was evident, There was a tendency for debris to remain in tropical latitudes, with incursions into the temperate regions associated with meteorological disturbances of the predominantly zonal flow. As the season advanced, such incursions became more evident. Outside of the tropics, the southwestern United States received the greatest total fallout, about} five times that received in Japan. Do oan73 1473s Edi TION OF | wov 68 15 OMSOLETE UNCLASSIFIED SECURITY CLASSIFICATION OF THIS PAGE (When Data Entered)