- Precipitation
Type
- or Feature
|
- Signature in
Signal Power
|
- Signature in
Vertical Radial Velocity
|
- Signature in
Velocity Variance
|
- Snow
|
- Enhanced over background
- values, no bright band
|
- 0.5< Vr < 2.0 m/s
|
- typically none,
- variance < 1 m2s-2
|
- Stratiform Rain
or
- Freezing Rain
|
- Enhance over background
- values, bright band may
- be present
|
- Vr > 3-5 m/s, and Vr
increases across
- a well-defined melting level
|
- larger in heavy rain and in
- bright band,
- variance > 1 m2s-2
|
- Convective Rain
|
- enhanced over background
- levels, no bright band
|
- Vr > 3-5 m/s, but
can be modulated
- by strong updrafts
|
- large throughout the storm,
- variance > 4 m2s-2
|
- Melting Level
|
- 2-8 dB increase at an altitude
- of 0.1-0.5 km below the
- 0°C level
|
- transition from small Vr
in snow
- above the 0°C level, to large Vr
in
- rain below the 0°C level
|
- transition from small variance
- in snow above the 0°C level to
- large variance in rain below
- the 0°C level
|
