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Photographer's Note

Upon ascent, the air that is being lifted will expand and cool. This adiabatic cooling of a rising moist air parcel may lower its temperature to its dew point, thus allowing for condensation of the water vapor contained within it, and hence the formation of a cloud. If enough water vapor condenses into cloud droplets, these droplets may become large enough to fall to the ground as precipitation.

Arenal volcano force the air to rais creating orographic cloud around the pik.

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Additional Photos by yuval naaman (kogawa) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 85 W: 101 N: 389] (4330)
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