A simple model to estimate deposition based on a statistical reassessment of global fallout data

► We made a statistical reassessment of global Sr-90 & Cs-137 fallout data. ► Generalised additive models were used to examine candidate explanatory variables. ► Deposition could be modelled by simple linear models using 4 latitude bands. ► Useful explanatory variables: rain, latitude, time (monthly values) and network. ► Non-linear relationship, deposition density proportional to precipitation rate raised to the power of 0.2-0.6.