Altitude
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Altitude is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object. The exact definition and reference datum varies according to the context
An airliner flying in the stratosphere where airliners typically cruise to reduce fuel consumption. The blue layer is the ozone layer, fading further to the mesosphere.
Lapse rate
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The lapse rate is the rate at which an atmospheric variable, normally temperature in Earth's atmosphere, falls with altitude. Lapse rate arises from the word lapse. In dry air, the adiabatic lapse rat
Higher Czarny Staw pod Rysami lake (elevation 1,583 metres (5,194 ft)) is still frozen as the lower Morskie Oko lake has already almost melted (elevation 1,395 metres (4,577 ft)). Photo from Polish side of the Tatra mountains, May 2019.
The latent heat of vaporization adds energy to clouds and storms.