“…However, in the observation of the surface 7 Be concentrations, we cannot neglect meteorological removal effects such as precipitation (Caillet et al, 2001;Ioannidou and Papastefanou, 2006;Megumi et al, 2000;Salisbury and Cartwright, 2005). Therefore, it is necessary to estimate how precipitation affects the time variations in the 7 Be concentrations.…”