introduction to radar meteorology
TRANSCRIPT
February 15, 2006 Hanne Murphey
Introduction to RadarMeteorology
AOS-C110
S-POL 10 cm radar
ELDORA 3cm radar
Doppler On Wheels (DOW) 3 cm radar
Types of radars
Second Trip EchoesSecond Trip Echoes
Different WeatherDifferent Weather
Types of Displays: PPI
Hook echo associated with a super cell
Doppler on Wheels (DOW)Doppler on Wheels (DOW)
Bright Band & S-shaped veering windsBright Band & S-shaped veering winds
Bright bands are an artifact of theradar. Occurs at the melting level.
S-Shaped velocity pattern withheight. Indicates veering winds orwarm air advection.
Clear Air Return with developing storms
Single Doppler VelocitySingle Doppler Velocity
Single Doppler Velocity
Courtesy Nolan Atkins
Speed ShearSpeed Shear
Shear LineShear Line
Brown and Wood JAOT 1986Brown and Wood JAOT 1986
Dryline Dryline and Cold Frontand Cold Front
Murphey et al. 2006
Example of a shear zoneExample of a shear zone
ConvergentConvergentFlowFlow
DivergentDivergentFlowFlow
Veering Winds:Veering Winds: ““S-shapedS-shaped””
Warm AirWarm Airadvectionadvection
Backing Winds:Backing Winds: ““BackwardsBackwardsS-shapedS-shaped””
Cold AirCold Air advectionadvection
Bright Band & S-shaped veering windsBright Band & S-shaped veering winds
Bright bands are an artifact of theradar. Occurs at the melting level.
S-Shaped velocity pattern withheight. Indicates veering winds orwarm air advection.
Veering andVeering and Backing WindsBacking Winds
Veering WindsVeering Winds
Backing WindsBacking Winds
Note: Radar is located to the south in both imagesNote: Radar is located to the south in both images
DivergentDivergentWindsWinds
Example:Example:downdraftsdowndrafts
RotationRotationSignatureSignature
Example:Example:tornadotornado
Hook echo associated with a super cell
Folded Velocities:Folded Velocities:
v > v > vvunambiguousunambiguous