Abstract
Three methods have been used to measure the velocity of deposition of iodine to grassland. For average conditions the results are: field experiments, vg = 1 cm/sec; analysis of fallout data, vg = 0.5 cm/sec; analysis of stable iodine measurements vg = 0.16 cm/ sec. The varying physical-chemical state of the iodine accounts for the variation. An analysis is made of the contributions of various parts of the boundary layer to the resistance to transport of gaseous elemental iodine to grass.DOI: 10.1111/j.2153-3490.1966.tb00231.x