Flashcards in Lesson 309 Radar Imagery Interpretation Deck (17):
Can the interpretation of RADAR imagery be done properly independent of other tools?
In general, we should know what for our area of responsibility?
Forecast and current weather
What echo system has an extensive area of coverage?
Stratiform echo systems
What echo system has a strong intensity gradient?
What echo system can be observed at longer ranges?
Name the signatures that may identify the presence of potentially severe echoes.
Line echo wave patterns (LEWP)
Echoes ahead of a line
Echoes at the trailing end of a line
Protuberances or Appendages
Echo height (vertical development)
Echo movement (colliding cells, echo speed, motion to right of mean flow, persistence)
What is "typed" by the observer using his knowledge of RADAR propagation characteristics, display features, and ground truthing?
Area coverage is identified as a function of the amount of echoes within an outline. They are described as:
Widely scattered <1/10
*A cell is always solid
The precipitation scale consists of 5 intensities:
Moderated to strong
Weak to moderate
When describing convective precipitation, describe the type with the _______ ________ and always ground truth if possible.
When describing Stratiform precipitation, describe the type with the ________ ________ and always ground truth if possible.
When describing convective echo tops always give the ________ ________.
When describing Stratiform echo tops always give the ________ _______.
How often is lightning data collected by the CLDN?
How accurate is the CLDN?
Within 500 metres
Stratiform echo systems are usually associated with clouds associated with a stable airmass with the following characteristics:
Fringing and precipitation attenuation distortion common
Extensive area coverage
Weak intensity coverage
Relatively low intensity
Edges may be poorly defined
Seldom observed at longer ranges (beyond 240km)
Tops uniform and relatively low