jenny sun and rita roberts, step program

Understand and explain immense and complex data

Welcome to VAST, the home of Visualization and Analysis Systems Technologies at NSF NCAR.

We offer software tools, like GeoCAT and VAPOR, that help Earth systems scientists find the interesting nuggets in their data.

We also provide education, such as Project Pythia and online tutorials, to teach you how to use our software and services.

explore vast



Share your data-driven insights through interactive visualizations

Show and tell your findings to the world. 


The Visualization and Research Services (ViSR) group creates interactive designs based on your data—such as YouTube videos, animations, infographics, and web interactives. 


We work closely with scientists, educators, and communications pros to share your data findings with a larger audience.


Research that pushes limits

Our research and development (R&D) teams are constantly improving visualization techniques through novel technologies:

see our projects