Sweden radionuclide deposition

Persson, C., Rodhe, H. de Geer, L.E. (1987) The Chernobyl accident - a meteorological analysis of how radionuclides reached and were deposited in Sweden. Ambio, 16,20-31. 

The total release of radioactive substances was about 14 EBq (as of April 26,1986), which included 1.8 EBq of 0.085 EBq of Cs and other cesium radioisotopes, 0.01 EBq of Sr, and 0.003 EBq of plutonium radioisotopes. The noble gases contributed about 50% of the total release of radioactivity. About 115,000 residents had to be evacuated from the area of around 30 km of the reactor. The fission products had been transported by the plumes by meteorological dynamics and were deposited all over the world. The first plume moved to the north and arrived in Sweden and Finland on the next day. The second plume moved to the east and on April 29 and 30 arrived in Himgary and Austria. The third plume moved to the south and arrived in Greece on May 2 (O Fig. 55.4). Furthermore, the radionuclides were transferred with global atmospheric dynamics and arrived on May 4 in China, May 5-6 in Canada and the USA (O Table 55.33). 

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