Dual-polarization Radar
Dual-polarization Radar
Dual-polarization Radar
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ZDR ADVANTAGES<br />
- Based on value of ZDR, radar operator can make inferences as to<br />
hydrometer type<br />
• Small positive values of ZDR up to about 1.5 indicate liquid drops<br />
generally greater than 1-2 mm.<br />
• ZDR values > 3 indicate very large liquid drops with perhaps even ice<br />
core (5 mm drops or greater).<br />
- Convective updrafts and hail shafts can be identified using ZDR<br />
- Winter time applications include identifying melting layer and the<br />
changes in elevation of the melting layer through time<br />
- False echoes (ground clutter) can be more readily identified by using a<br />
combination of Z and ZDR
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