Fallout and concentration of aerosol-borne radioactivity over the Atlantic (Appendix)


Measurements of atmospheric radioactivity attached to aerosols are described. Fallout was collected in a vessel of large area. Emphasis was on separation of "wet" and "dry" samples. For strontium 90 a ratio of "wet" to "dry" fallout of 5:1 has been found independent of latitude. The total fallout was smaller than comparable values from continents because of very small amounts of rainfall in the equatorial zone. In order to achieve consistency in the global balance a better knowledge not only of radioactivity but also of precipitation over the ocean is required. Fallout of Ra-D clearly shows the ITC as a barrier for the latitudinal movement of near sea-surface air masses. The concentration of short-lived emanation daughters shows large variations according to varying geographic conditions. A variation with time could not be explained. The specific activity of long-lived radioactive substances shows the expected effect of the ITC as well as a seasonal diminuation of average concentration, similar to that measured at Heidelberg.

Supplement to: Schumann, G; Möller, U (1969): Fallout und Konzentration aerosolgetragener Radioaktivität auf dem Atlantik. Meteor Forschungsergebnisse, Deutsche Forschungsgemeinschaft, Reihe B Meteorologie und Aeronomie, Gebrüder Bornträger, Berlin, Stuttgart, B3, 40-47

DOI https://doi.org/10.1594/PANGAEA.665707
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.665707
Creator Schumann, G; Möller, U
Publisher PANGAEA
Publication Year 1969
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 254 data points
Discipline Earth System Research
Spatial Coverage (-35.000W, -8.000S, -17.000E, 47.000N); Atlantic
Temporal Coverage Begin 1965-08-13T00:00:00Z
Temporal Coverage End 1965-12-11T00:00:00Z