Retrieving 3D Wind Field from Phased Array Radar Rapid Scans
Figure 2
Reflectivity images from 20 consecutive PAR 90° sector scans of a severe microburst event from 19 : 41 : 12 to 19 : 53 : 19 UTC on July 10, 2006. Each panel consists of two subpanels: (i) the range height indicator (RHI) display along the 210.7° azimuth on the left side and (ii) the plan position indicator (PPI) display at 0.51° elevation on the right side. For the RHI display, the radial range is leftward from to 35 km and the height range is upward from to 10 km. The horizontal (or vertical) domain used in the first (or second) step of retrieval is shown by the white dashed boundary lines in the right (or left) subpanel of panel (a). The white letter C in each left subpanel marks the reflectivity core. As shown from panel (a) to (t), the reflectivity core falls from km to 1.8 km in 667 s, so the estimated falling speed of the reflectivity core is m s−1, where (≤ 0) is the hydrometeors’ terminal velocity as defined in (14).
