August 28, 2002: Significant Anomalous Propagation Author: Pam Heinselman, CIMMS/OU Last Updated: 21 April 2003

Forecast/Weather:

On 28 August 2002, a significant period of anomalous propagation occurred around KOUN from 3:28-14:05 UTC. Polarimetric signatures indicate that biological scatterers were also present during this period (see Fig. columns 1,3: BS indicated by higher ZDR, and lower RhoHV and Z). Interference from other radars is also seen in these data.

Radar Operations:

Start time: 03:28 8/28/02 UTC (22:28 8/27/02 local time)
Stop time: 18:04 8/28/02 UTC (13:04 8/28/02 local time)

Radar/Operational Status:

Hydrometeor Classification Algorithm: Cold season

Operational Delivery:

Not applicable.

Snapshots:

Figure 1: Reflectivity at 4:55 UTC 28 August 2002.

Figure 2: Reflectivity at 8:16 UTC 28 August 2002.

Figure 3: Reflectivity at 8:16 UTC 28 August 2002.

Figure 4: Differential reflectivity at 4:55 UTC 28 August 2002.

Figure 5: Differential reflectivity at 8:16 UTC 28 August 2002.

Figure 6: Differential reflectivity at 13:40 UTC 28 August 2002.

Figure 7: Correlation coefficient at 4:55 UTC 28 August 2002.

Figure 8: Correlation coefficient at 8:16 UTC 28 August 2002.

Figure 9: Correlation coefficient at 13:40 UTC 28 August 2002.