-3- One of the adjust observed major After modification, all observed (over most other fallout methods? stations for each time. to calculate source. allowing more Furthermore, particles; this modifications calculations required upper air were Finally, than falling to incorporate the time-integrated total dose from detonation to handle is used the method a tropical particle activity deposition set of an typical instantaneous atmosphere increase consisted ARAC increase to the larger by McDonald. into of assessments. undergo a large wake correction forth in any of ADPIC[3] particle-in-cell the Bravo test, from the stratosphere the as the cube [4] fall Other velocity of particle was added; this allows calculation time to evacuation. ,.. in of this code for four times. deposition to add a turbulent follows and to make and of ADPIC, input it was necessary correction diffusion, using winds for to accumulate for each 3-D cell intersection transport, since particles in air density, radius. the Modifications periods, The obvious advantages The MATHEW winds are used then by the modified code rn’~ss upper air wind data from 10 m to codes) is that mass is not permitted the ceils and winds are available is to so as to conserve This W3S done for four time es input. observing .[~] is L1.ATHEW ; its purpose was modified analysis 35 km were entered to three that winds, using variational from cell to cell. Oile codes of the