Visualization of Multi-physics Coupled Cloud Simulation using Super-droplet Method

The method of precisely simulating a cloud microphysical process in a comparatively reasonable calculation cost has been developed by introducing the new concept that is called a super-droplet. Currently, the multi-physics simulations of the cumulus cloud formation and the rainfall have been tested, by coupling the super-droplet method with the macro-scale non-hydrostatic atmospheric model. Several characteristics of each water droplet, such as the positions in the atmosphere, the numbers of water droplets at those positions and the radii, are derived precisely in the simulation using super-droplet method. Several visualizations also have been tried for analyzing the data of this simulation. In the present paper, visualization of light transport in the cumulus cloud and around it is discussed by focusing optical characteristics of the water droplets which have been obtained by the multi-physics coupled cloud simulation.