Estimation of global radon exhalation rate distribution

摘要

A radon exhalation rate distribution model was developed, which considers dependencyon soil water saturation, soil temperature and soil texture. The global averages of the radonexhalation rates were calculated to be 17.5 and 18.0 mBq.m~(-2).s~(-1)by the model with different inputsoil moisture data. These values were slightly smaller than the widely-accepted value. Althoughthe calculated radon exhalation rates were smaller than the measured ones in the East Asia, theestimated latitudinal distributions of the radon exhalation rate agreed fairly well with that reportedby Conen et al. (2002).