Geoscience Reference
In-Depth Information
Fig. 8. PPI images of Doppler velocity 30 minutes apart (5:00, 5:30 and 6:00) and time series
of wind and reflectivity profiles 02:00 to 07.00 UTC 14 January 2008. Green colours towards
radar, reds and yellows away. Reflectivity from -20 dBZ (blue) to +20 dBZ(purple)
In Fig. 9 we see another scale of shear. There is a small wind maximum below 1 km. In this
case it lasted for less than 45 minutes. This is an indicator of low level jet related to conveyor
belt in the frontal structure. In the real atmosphere, the wind shear related to that is
probably larger, as the VVP is averaged over a cylinder of 30 km.
