11. teledetection

Jose Antonio Vazquez
Quiz by Jose Antonio Vazquez, updated more than 1 year ago
Jose Antonio Vazquez
Created by Jose Antonio Vazquez over 3 years ago
209
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Description

Tema 1 Meteo Quiz on 11. teledetection, created by Jose Antonio Vazquez on 01/04/2018.

Resource summary

Question 1

Question
1- Which of the following channels can be used to estimate cloud top height?:
Answer
  • Visible.
  • Water vapour.
  • IR and Visible.
  • IR.

Question 2

Question
2- Which of these cloud types can't be observed in the water vapour channel?
Answer
  • Cumulus humilis.
  • Cumulonimbus capillatus (anvil cirrus).
  • Cirrus.
  • Cumulus humilis and cirrus.

Question 3

Question
3- Which of these cloud types can be viewed in the visible channel?
Answer
  • Cirrus and cumulonimbus.
  • Cumulus.
  • Low stratus.
  • All of them.

Question 4

Question
4- What is the smallest distinguishable feature that can be seen in the Meteosat visible channel?
Answer
  • 1.0 Km.
  • 2.5 km.
  • 7.5 km.
  • 10.5 km.

Question 5

Question
5- What is the cone of silence? (Choose the best answer.)
Answer
  • The volume under the lowest elevation of the beam
  • The volume above the highest elevation of the beams
  • The volume between the lowest and highest scans in clear air mode
  • The volume between the lowest and highest scans in precipitation mode

Question 6

Question
6- In which of the following instances would precipitation often go completely unobserved by radar due to the geometry of the radar beam?
Answer
  • A tall thunderstorm producing rain very close to the radar
  • A tall thunderstorm producing rain about 50 km (31 mi) away from the radar
  • A low, stratiform cloud producing rain near the radar's maximum unambiguous range and a thunderstorm producing rain behind a mountain located 10 km (6 mi) from the radar.
  • None of them.

Question 7

Question
7- What usually doesn't constitute ground clutter that we often see near a radar?
Answer
  • Insects
  • Birds
  • Large particulate matter, like dust
  • Fog

Question 8

Question
8- Which of the following phenomena appears on radar as evenly scattered bands of weak reflectivity or ripples near the radar, especially during the afternoon? (Choose the best answer.)
Answer
  • Smoke
  • Chaff
  • Horizontal convective rolls
  • Anomalous propagation

Question 9

Question
9- What reflectivity value is a general threshold that indicates hail? (Choose the best answer.)
Answer
  • 40 dBZ
  • 50 dBZ
  • 60 dBZ
  • 70 dBZ

Question 10

Question
10- Weather satellites measure radiation emitted by the Earth or reflected solar radiation
Answer
  • They are usually passive detection devices.
  • They are usually active detection devices.
  • They are usually none of them.
  • They are usually passive both of them.
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