1. Index
2. Introduction
3. What does 3d-LIIVID Show?
4. What is the Isosurface Scan?
5. 3d-LIIVID Coverage Explained
6. Level II Super High Res Data
7. The Future of 3d-LIIVID
8. 3d-LIIVID FAQ
9. Resolving Java Issues
10. Becoming a Member
11. Current Radar Stations
12. Free Sample

It is important to understand how the isosurface scan works in order to analyze what is displayed.  The 3d radar images show the thickest clouds from the .5 degree elevation, up to 19.5 degrees elevation.  3d-LIIVID isosurface only returns and displays data that is above 2000 meters. This is part of the reason that these images do not appear to be in the correct location in comparison to the ground. It is also critical to understand how the distance from the radar effects the isosurface returns. The peaks on the isosurface display show the taller clouds that meet the minimum density requirements.  Since the radar is tilted at a minimum of .5 degrees, the base and max elevation it displays increases as distance from the radar increases. The density range is usually set to a range of 30dbz to 65dbz; with 30dbz picking up moderate reflectivity, or rain, and 65dbz picking up very heavy rain.  The colors in the isosurface display reflect this density range while the shape reflects storm structure and cloud height.  The image below shows a 3d-LIIVID isosurface display.