Comparison of Beryllium-7 and Cæsium-137 Radioactivity in Ground-Level Air

7Be to 210Pb concentration ratio in ground level air in Belgrade area

“…(Gustafson et al, 1981;Gaggelar, 1995;Baeza et al, 1996). Variations in annual mean concentrations of 7 Be that is produced in the upper troposphere and lower stratosphere indicate the changes in the atmospheric production rate, while its seasonal maxims could be attributed to the stratosphere-to-troposphere exchange processes in summers that are typical for the mid-latitudes (Agelaio et al, 1984;Durana et al, 2000;Hartwig, 1996;Cannizzaro et al, 1995;Bettoli et al, 1998).…”

Seasonal variation of Beryllium-7 relative to Caesium-137 in surface air at tropical and sub-tropical latitudes

“…Measurements of Be-7 in surface air have been reported by Shvedov (Shvedov et al, 1962) a t Leningrad (60" N), by Parker (Parker, 1962) a t Sutton, U.K., (53" N), by Peirson (Peirson, 1963) a t Chilton, U.K. (53" N), by Schumann (Schumann & Stoeppler, 1963) at Heidelberg (49" N) and by Gustafson (Gustafson et al, 1961) a t Argonne, U.S. (42" N). Most of these meas-urements, carried out in the middle latitudes during the moratorium of 1959-62 do show a "spring increase" somewhat similar to that observed for fission products although the amplitude of the increase varies from station to station.…”

Untersuchungen über den Zufluß stratosphärischer Luft in die untere Troposphäre mit Hilfe von durch kosmische Strahlung erzeugten Radionukliden und Fallout

“…Fallout and ozone are only of limited use for this purpose as the stratospheric fallout reserves are dependent upon a very irregular and arbitrary "supply", and ozone, in the lower troposphere, is subject to processes of decay varying with time. Measurements from the earth's surface are not subject to these difficulties and have likewise been already conducted at many locations [15,21,26,27,1,14,24,2,46]. This procedure has already been in successful use, for some time, in studying the stratospheric-tropospheric exchange, atmospheric mixing, and problems of global propagation (see for example [28,16,32,49,17,25,24,53,2,46] and others).…”