MET1352

How is advection fog formed?​​​

• Warm and moist air moves over cooler surfaces and is cooled below saturation temperature​

  
  

• By the cooling of land after sunset by thermal radiation in calm conditions with clear sky​

  
  

• ​When winds blow air up a slope and adiabatically cooling it as it rises, and causing the moisture in it to condense​

  
  

• When cold air is warmed from below, and it condensate as it rises​​

  
  

Where does meteorological information come from?

• Passenger reports

  
  

• Aircraft reports

  
  

• Weather radar

  
  

• Airport equipment

  
  

Which unit of measurement is used to indicate air pressure for international meteorological purposes?

• hPa

• Kg/m3

  
  

• psi

  
  

• KPa

  
  

VAAC (Volcanic Ash Advisory Centre) issues warnings in the form of NOTAM and SIGMET messages.

• True

• False

​Which of the following weather phenomena could most likely be the reason for aircraft accidents?

• Reduced visibility

  
  

• Thunderstorm

  
  

• Earthquake

• Turbulence

  
  

What temperature scale is used for international meteorological purposes?​

• Celsius

  
  

• Kelvin

  
  

• Réaumur​

  
  

• Fahrenheit

What instrument is used to measure wind?​​​

• Anemometer

  
  

• Barometer

  
  

• Transmissometer

  
  

• Ceilometer

Which instrument is used to measure visibility and RVR?​

• Anemometer

• Forward Scatter meter

  
  

• Barometer

  
  

• Ceilometer

What is measured by the ceilometer?

• Visibility and RVR

  
  

• Cloud height

  
  

• Temperature

  
  

• Wind Speed

  
  

Cloud coverage is reported in hectas.​

• True

• False