Bright Bands
- Are generated as snow falls
through the melting level
- Just below the melting level, snow
acquires a coat of water, so it looks like a big
rain drop
- So, the radar sees "big rain
drops" in the "bright band".
- Also keep in mind that the complex
dielectric factors for rain and snow are much
different:
Water - |K|2
= 0.93
Ice - |K|2 =
0.197
Bright bands are common in stratiform
regions
Here is a great example in a PPI
Here is a great example in an RHI
Test your
knowledge - where is the bright band in this image?
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