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Table of Contents
Memories of the Bureau, 1946 to 1962 Foreword Terminology Prologue Preface Chapter 1: The Warren Years, 1946 to 1950 Chapter 2: International Meteorology Chapter 3: The Timcke Years, 1950 to 1955 Chapter 4: A Year at the Massachusetts Institute of Technology Chapter 5: The Dwyer Years, 1955 to 1962 Leonard Joseph DwyerA Complex Character Reorganising the Bureau Public Weather Services Forecasts for the General Public Importance of Radio Stations The Advent of Television Automatic Telephone Forecast Service Beacons Wording and Verification of Forecasts Warnings Services for Aviation Atomic Weapons Tests Atomic Weapons TestsMosaic G1 and G2 Atomic Weapons TestsBuffalo 1, 2, 3 and 4 Atomic Weapons TestsOperations Antler, 2 and 3 Atomic Weapons TestsMinor Trials Instruments and Observations Radiosondes Radar/Radio Winds and Radar Weather Watch Automatic Weather Stations Sferics Meteorological Satellites Telecommunications Tropical Cyclones Bureau Conference on Tropical Cyclones International Symposium on Tropical Cyclones, Brisbane Hydrometeorology Design of Water Storages, Etc Flood Forecasting Cloud Seeding Reduction of Evaporation Rain Seminar Cloud Physics Fire Weather Research and Special Investigations International Activities The International Geophysical Year The Antarctic and Southern Ocean International Symposium on Antarctic Meteorology International Antarctic Analysis Centre ADP, EDP and Computers Training Publications Management Conference Services Conference CSIRO and the Universities Achievements of the Dwyer Years Chapter 6: A Springboard for the Future Appendix 1: References Appendix 2: Reports, Papers, Manuscripts Appendix 3: Milestones Appendix 4: Acknowledgements Appendix 5: Summary by H. N. Warren of the Operation of the Meteorological Section of Allied Air Headquarters, Brisbane, 194245 Endnotes Index Search Help Contact us |
Atomic Weapons TestsMosaic G1 and G2 (continued)In late April or early May 1956 Henry Phillpot, the meteorological team leader, joined Narvik and he, Dick Fotheringham and Bob Southern settled down to a regular program of synoptic analysis and briefing. Initially the members of the AWTSC (L. Martin, E. W. Titterton, L. J. Dwyer, W. A. S. Butement and C. E. Eddy) were located on Narvik but subsequently moved to the more comfortable HMS Alert moored not far away.The computations of height of the radioactive cloud and likely fallout patterns were made by a G. Matthewman of the UK Meteorological Office and Jim MacDougall of AWRE on the basis of information supplied by the meteorologists and from the yield of the weapon which was top secret and not divulged to the meteorologists. Bob Southern's submission to the Royal Commission gives his detailed assessment of the meteorological conditions at the time of firing of Mosaic G1 and G2 and the likely fallout. The report of the Royal Commission indicates that the radioactive cloud of Mosaic G1 reached 21 000 feet, the predicted height being 14 000 to 17 000 feet, and reports that Len Dwyer added a margin of safety to UK predictions for Mosaic G2. The report also states that the height of the cloud from Mosaic G2 was 21 000 to 47 000 feet (some 10 to 15 000 feet above the estimated maximum) and that there was a marked increase in iodine 131 in thyroids of sheep and cattle over central and northern Australia. It concluded that the "Mosaic tests were conducted in a hurry under marginal meteorological conditions" and that "the report of the Safety Committee was grossly misleading". I have no doubt that the meteorological advice given by Henry Phillpot, Dick Fotheringham and Bob Southern was as accurate as any meteorological team could have given. They were conscious of the limited probability of ideal conditions for firing. The AWRE predictions of cloud height were at times in error and not due to errors in meteorological information. The trials director would have been eager to test the two weapons in view of the considerable expense in mounting the trials. The AWTSC would have been in the difficult position of weighing the probability of risk to the Australian population against the urgency of completing the trials. As is always the case in such circumstances it is extremely difficult to determine whether there was any damage to the health of any of the Australian population.
People in Bright Sparcs - Butement, William Alan Stewart; Dwyer, Leonard Joseph; Eddy, Cecil Ernest; Phillpot, Henry Robert
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