Turbulent dispersion of artificial SO2 puffs in the PBL from tomographic reconstructions of the concentration

Tomographic 3D reconstructions of artificial puff releases of SO₂ were obtained from 2D images taken with UV cameras.  These novel 3D reconstructions provide information on the distribution of concentration from a unique experimaental campaign dataset collected in Rena, Norway. The numerical solutions of the inverse problem of obtaining 3D reconstruction form 2D images were addressed with algebraic methods. Preliminary turbulence analysis of the puff concentration pdf, spatial moments, and 2-point statistics are presented. The experimentally obtained concentration pdf of a puff can be compared with different statistical models found in the literature. The time series of the puff spatial moments are obtained from the 3D concentration field directly in relative coordinates from observations. The distance-neighbour function can also be estimated directly from the 3d puff concentrations. The time series of 3D reconstructions of puffs entail promising posibilities for improving physical parametrizations in numerical dispersion models.