Measurements of the effect of cyclic atmospheric pressure variation on the flux of ²²²RN from the soil

A continuous recording accumulator method has been employed to study the effect of natural pressure cycles such as due to the passage of cyclonic weather systems on the time‐averaged flux of 222 Rn from the soil. Results indicate a modest net enhancement of flux (∼10%) for pressure variation with standard deviations on the order of 0.2 in Hg.