Analysis of atmospheric Radon-222 variations observed at JMA stations using model simulations of tagged Radon-222 tracers and Radon-222 age

Kentaro Ishijima1, Kazuhiro Tsuboi1, Hidekazu Matsueda1, Taichu Y Tanaka2, Takashi Maki2, Takashi Nakamura3 and Yosuke Niwa4, (1)Meteorological Research Institute, Tsukuba, Japan, (2)Meteorological Research Institute, Ibaraki, Japan, (3)Japan Meteorological Agency, Tokyo, Japan, (4)National Institute for Environmental Studies, Tsukuba, Japan