Excerpts from Abstract

The distribution of Rn-222 is simulated using a three-dimensional chemistry and transport model driven by assimilated data. The multiyear calculation is the first to use meteorological data from the Goddard Earth Observing System data assimilation system (GEOS-1 DAS). ...

CTM-calculated Rn-222 at Bermuda closely matches obsevations even during periods of frontal passage showing that the atmospheric circulation is accurate and that ventilation of the continental PBL is realistic.