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Introduction to Radar Meteorology AOS-C110 February 15, 2006 Hanne Murphey Types of radars S-POL 10 cm radar ELDORA 3cm radar Doppler On Wheels (DOW) 3 cm radar Second Trip Echoes Different Weather Types of Displays: PPI Hook echo associated with a super cell Doppler on Wheels (DOW) Bright Band & S-shaped veering winds Bright bands are an artifact of the radar. Occurs at the melting level. S-Shaped velocity pattern with height. Indicates veering winds or warm air advection. Clear Air Return with developing storms Single Doppler Velocity Single Doppler Velocity Courtesy Nolan Atkins Speed Shear Shear Line Brown and Wood JAOT 1986 Dryline and Cold Front Murphey et al. 2006 Example of a shear zone Divergent Flow Convergent Flow Veering Winds: “S-shaped” Warm Air advection Backing Winds: “Backwards S-shaped” Cold Air advection Bright Band & S-shaped veering winds Bright bands are an artifact of the radar. Occurs at the melting level. S-Shaped velocity pattern with height. Indicates veering winds or warm air advection. Veering and Backing Winds Veering Winds Backing Winds Note: Radar is located to the south in both images Divergent Winds Example: downdrafts Rotation Signature Example: tornado Hook echo associated with a super cell Folded Velocities: v > vunambiguous
