*3.4. Dynamic Severe Weather Visualization on a Traffic Display*

Since convective cells should be visualized on a 2D display, the current and forecasted cells can be represented by discrete sets of simple polygons. Each polygon of a set that is valid for some time period has an identification number that provides unique correlation between sets of cells. The polygons have to be displayed without covering essential traffic information, such as aircraft labels or additional flight plan information. For animation of actual weather development, two methods for comparison were implemented with different demands in terms of the level of detail for weather information. In addition to a linear extrapolation of the last weather development, this also includes a procedure based on a morphing algorithm which, in addition to the last meteorological measurement, also considers nowcasts in the animated presentation.
