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Level 3

Weather ~ Part 3


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Dew point
The point at which condensation occurs.
Temperature inversion
Atmospheric condition where temperature increases with height.
Adiabatic cooling
Air rises, expands and cools.
Diabatic cooling
Cold ground cools the surface.
Climate
The average weather taken over an area usually for a 30 year period.
Weather
Day to day state of the atmosphere.
Coriolis effect
Rotation of the Earth.
Environmental Lapse Rate
6.5 degrees Celsius drop per 1000 metres altitude rise.
West to East
Movement of a Depression across the British Isles.
Blocking Anticyclone
Anticyclones that remain stationary for many days.
Advection Fog
Mass of warm air moves horizontally across a cooler surface.
Climatic Hazard
Natural event brought by weather or climate that threatens life and property.
Dendrochronology
Analysis of tree ring samples.
Wind-chill
How much colder it feels because of the cooling effect of wind.
Heat Index
How hot it feels because of the combined effect of humidity as well as the actual temperature.