The new version of FALL3D has recently been released
with several new features and improvements in model physics,
solving algorithms, code accuracy and performance [1].
Among the new features are a data insertion scheme and the
ability to simulate volcanic SO2 clouds. The data insertion
scheme enables users to initialise model runs from satellite
retrievals. This modelling approach is useful for removing
uncertainties associated with source term parameters such as
the mass flow rate, plume height, source duration and start
time. Here we demonstrate and validate the new data insertion
scheme in FALL3D-8.0 using geostationary satellite retrievals
of volcanic ash and SO2