BBC - Weather Centre - WeatherWise


Lapse Rate:	The rate at which air temperature decreases with existing altitude.
Latitude:	Position on the Earth's surface north or south of the equator.
Lee:	The side of a mountain, hillside, or island that is facing away from the prevailing wind.
Lightning:	Discharge of static electricity in the atmosphere, usually between the ground and a storm cloud.
Longitude:	Position on the Earth's surface east or west of the Greenwich meridian.
Low:	Also called a 'depression' - this region of low pressure can mean wet weather - it is the opposite of 'high' pressure or 'anticyclone'.

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