DUAL POLARIZATION WDTB MODULES - IMPORTANT CONCEPTS AND QUESTIONS

ZDR

1. What does the particle shape have to be to create positive, near zero, and negative ZDR values?
2. How do various rain drop sizes appear in ZDR data?
3. How would one locate hail in Z and ZDR data?
4. What are ZDR signatures for wet snow, dry snow, and ice crystals?
5. How will clear air data appear in ZDR data?
6. Why is ZDR biased toward the larger particles in a pulse volume?
7. How can one distinguish between rain and snow using Z and ZDR?
8. What will the ZDR values be in a bright band?
9. What can you say about debris if typical ZDR values are near or slightly above 0?