Meteorology  - is the study of weather and the atmosphere.  - the study of the atmosphere, processes that cause weather, and the life cycle of weather systems

- is the state of the atmosphere, at precise time and given position. It is given by observed atmospheric phenomena such as temperature, moisture, wind, barometric pressure, clouds

 turbulence  wind  precipitation + icing  clouds  visibility  pressure

- a pilot needs to know two thing about the wind  its direction  its sped - the words use to describe how strong the wind is:  calm  breese  strong  gale  storm

 intensity, time, form amount  light, moderate, heavy  continuous, intermittent  rain, shower, drizzle, thunderstorm, sleet  snow, freezing rain or drizzle, blizard, hail and pellets, snow flurry  icing

 Low level - stratus  Medium level – alto  Hight level – cirrus  CB Amount of clouds  no clouds  1-4 octas  5-7 octas  8 octas

 meteorolical, vertical, flight visibility, RVR  unlimited, excelent, haze, mist,fog  phenomene reducing visibility

 colour system is used to discribe weather at airfield  BLU, WHT, GRN, YLO, AMB, RED, BLACK

QNH, QFE, Standard atmospheric pressure

 Precipitation – light - moderate - heavy  Wind shear - moderate - strong  Other phenomena – light - moderate - severe

 METAR – actual report  TAF – weather forecast  SPECI – extra report  SNOWTAM

 meteorological briefing  radar screen  ledis screen  pilot’s and ATCo’s report