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Brown, F.; Goldsmith, P.; Green, H. F.; Holt, A.; Parham, A. G. (2011)
Publisher: Co-Action Publishing
Journal: Tellus A
Languages: English
Types: Article
Measurements of the water vapour, tritium and carbon-14 content of the stratosphere at heights of between 80,000 and 100,000 feet, made over England during the years 1956 to 1960, are described. The tritium and carbon-14 concentrations are greater than those expected from natural production due to the cosmic radiation. The bulk of these two isotopes, at present in the stratosphere, has been injected there during the course of thermonuclear explosions. Mass spectrometric analyses show that the deuterium/hydrogen ratio of the water and the carbon-13/carbon-12 and oxygen-16/oxygen-18 ratios of the carbon dioxide collected at these heights were the same, within the accuracy of measurement, as those for samples collected near the ground. The concentration of tritium at the heights of the measurements has not fallen since the termination of thermonuclear weapon testing in autumn 1958. There is poor correlation between the tritium concentration at 90,000 feet and that of particulate caesium-137 at 47,000 feet measured over the sampling period. The humidity above 80,000 feet is found to be greater than that in the lower stratosphere. It is concluded from these humidity and tritium results that the large scale meridional circulation in the stratosphere, first postulated by Brewer and Dobson, does not reach heights of 90,000 feet over temperate latitudes.DOI: 10.1111/j.2153-3490.1961.tb00102.x
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • The authors thank W. P. Cook, J. Davies and H. Heitler for controlling the balloon launches, D. E. Watt for advice on the carbon14 counting, D. E. Lloyd for work on the radio control slstem, and Miss N. Campbell who carried out the Mass Spectrometric analyses. Drs. F. Morgan and J. V. J e h y are also thanked for their interest and encouragement. The Radar tracking facilities were provided by O.C. R.A.F. Fighter Command and W. G.
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