In the research described here, we have constructed at tightly coupled set of methods for monitoring, steering, an applying visual analysis to large scale simulations. a single, integrated approach. This work shows how a collaborative, interdisciplinary process that teams application and computer scientists can result in a powerful integrated approach. The integrated design allows great flexibility in the development and use of analysis tools. This work also shows that visual analysis is a necessary component for full understanding of spatially complex, time-dependent atmospheric processes