What causes these long, strange clouds? No one is sure. A rare type of
cloud known as a Morning Glory cloud can stretch 1,000 kilometers long
and occur at altitudes up to two kilometers high. Although similar roll
clouds have been seen at specific places across the world, the ones over
Burketown, Queensland Australia occur predictably every spring. Long,
horizontal, circulating tubes of air might form when flowing, moist,
cooling air encounters an inversion layer, an atmospheric layer where
air temperature atypically increases with height. These tubes and
surrounding air could cause dangerous turbulence for airplanes when
clear. Morning Glory clouds can reportedly achieve an airspeed of 60
kilometers per hour over a surface with little discernible wind. On this
picture, photographer Mick Petroff photographed some Morning Glory
clouds from his airplane near the Gulf of Carpentaria, Australia.
Image Credit & Licence: Mick Petroff; James Holmes
Explanation from: http://apod.nasa.gov/apod/ap090824.html
1 comment:
besarnya kekuasaan Allah...
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