Lesson 309 Radar Imagery Interpretation Flashcards Preview

PBS Module 3 > Lesson 309 Radar Imagery Interpretation > Flashcards

Flashcards in Lesson 309 Radar Imagery Interpretation Deck (17):
1

Can the interpretation of RADAR imagery be done properly independent of other tools?

No

2

In general, we should know what for our area of responsibility?

Forecast and current weather

3

What echo system has an extensive area of coverage?

Stratiform echo systems

4

What echo system has a strong intensity gradient?

Convective echoes

5

What echo system can be observed at longer ranges?

Convective systems

6

Name the signatures that may identify the presence of potentially severe echoes.
LIVEPEEEE

Line echo wave patterns (LEWP)
Intersecting lines
Echoes ahead of a line
Echoes at the trailing end of a line
V notches
Protuberances or Appendages
Echo height (vertical development)
Echo intensity
Echo movement (colliding cells, echo speed, motion to right of mean flow, persistence)

7

What is "typed" by the observer using his knowledge of RADAR propagation characteristics, display features, and ground truthing?

Precipitation

8

Area coverage is identified as a function of the amount of echoes within an outline. They are described as:
WSBS

Widely scattered <1/10
Scattered 1/10-5/10
Broken 6/10-9/10
Solid 10/10
*A cell is always solid

9

The precipitation scale consists of 5 intensities:
VSMWV

Very strong
Strong
Moderated to strong
Weak to moderate
Very weak

10

When describing convective precipitation, describe the type with the _______ ________ and always ground truth if possible.

Maximum intensity

11

When describing Stratiform precipitation, describe the type with the ________ ________ and always ground truth if possible.

Maximum coverage

12

When describing convective echo tops always give the ________ ________.

Highest top

13

When describing Stratiform echo tops always give the ________ _______.

Average tops

14

How often is lightning data collected by the CLDN?

Every minute

15

How accurate is the CLDN?

Within 500 metres

16

Stratiform echo systems are usually associated with clouds associated with a stable airmass with the following characteristics:
FEWREST

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

17

The most common and noticeable anomalous propagation is _____________ associated with a strong __________ inversion.

Super-refraction
Nocturnal