Fig. 9
![Fig. 9](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40645-017-0117-x/MediaObjects/40645_2017_117_Fig9_HTML.gif)
a–f Maps of observations (colored circles) and model ensemble means of atmospheric 137Cs concentration from 3/15/9 h to 3/16/9 h. Areas identified as plumes with concentration larger than 10 Bq m−3 are encircled and labeled with the name of the plume. JMA-MANAL wind vectors at 1000 hPa are superimposed. Movement of the P3 plume route is indicated by a thick arrow in panel d