Amazing Clouds - Not Photos Hopped

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    Amazing Clouds - Not

    Photoshopped

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    Nacreous Clouds

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    These rare clouds, sometimes called mother-of-pearl

    clouds, are 15 - 25km (9 -16 miles) high in the stratosphere

    and well above tropospheric clouds.They have iridescent

    colours but are higher and much rarer than ordinary

    iridescent clouds. They are seen mostly but not exclusively

    in polar regions and in winter at high latitudes, Scandinavia,Alaska, Northern Canada. Lower level iridescent clouds

    can be seen anywhere shine brightly in high altitude

    sunlight up to two hours after ground level sunset or before

    dawn. Their unbelievably bright iridescent colours and slowmovement relative to any lower clouds make them an

    unmistakable and unforgettable sight

    Nacreous Clouds

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    Altocumulus Castelanus

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    Also known as jellyfish clouds due to theirjellyfish-like appearance.These formed

    around 17,000 ft due to when the rush of

    moist air comes from the Gulf Stream andgets trapped between layers of dry air. The

    top of the cloud rises into a jellyfish shape

    and long tentacles known as trailing virga

    form from rain drops that have evaporated.

    Altocumulus Castelanus

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    Noctilucent Clouds

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    Noctilucent Clouds or Polar Mesopheric

    Clouds: This is an extroadinarily rare cloud

    formation that occurs out on the verge of

    space between 82km to 102 km from the

    earths surface.Noctilucent clouds appear tobe luminous yet they reflect the sunlight

    from the other side of the earth at night,

    giving them a glowing appearance

    Noctilucent Clouds

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    Mammatus Clouds

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    Mammatus are pouch-like cloud

    structures and a rare example of cloudsin sinking air.Sometimes very ominous

    in appearance, mammatus clouds are

    harmless and do not mean that atornado is about to form - a commonly

    held misconception. In fact, mammatus

    are usually seen after the worst of a

    thunderstorm has passed.

    Mammatus Clouds

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    Mushroom Clouds

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    A mushroom cloud is a distinctive mushroom-shaped cloud of smoke,

    condensed water vapor, or debris resulting from a very large explosion.

    They are most commonly associated with nuclear explosions, but any

    sufficiently large blast will produce the same sort of effect.Volcano

    eruptions and impact events can produce natural mushroom

    clouds.Mushroom clouds form as a result of the sudden formation of a

    large mass of hot low-density gases near the ground creating a

    Rayleigh-Taylor instability. The mass of gas rises rapidly, resulting inturbulent vortices curling downward around its edges and drawing up a

    column of additional smoke and debris in the centre to form its stem.

    The mass of gas eventually reaches an altitude where it is no longer

    less dense than the surrounding air and disperses, the debris drawn

    upward from the ground scattering and drifting back down.

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    Cirrus Kelvin-Helmholtz

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    Appearing as a slender, horizontalspiral of cloud, cirrus Kelvin-Helmholtz

    is one of the most distinctive cloud

    formations. However, it tends todissipate only a minute or two after

    forming and, as a result, is rarely

    observed.Average height is around16,500 ft.

    Cirrus Kelvin-Helmholtz

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    Lenticular Clouds

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    Lenticular clouds, technically known as

    altocumulus standing lenticularis, are stationary

    lens-shaped clouds that form at high altitudes,normally aligned at right-angles to the wind

    direction.Where stable moist air flows over a

    mountain or a range of mountains, a series of

    large-scale standing waves may form on the

    downwind side. Lenticular clouds sometimes form

    at the crests of these waves. Under certain

    conditions, long strings of lenticular clouds canform, creating a formation known as a wave cloud.

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    Roll Clouds

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    A roll cloud is a low, horizontal tube-shaped arcus

    cloud associated with a thunderstorm gust front, or

    sometimes a cold front. Roll clouds can also be asign of possible microburst activity.Cool air sinking

    air from a storm clouds downdraft spreads out

    across the surface with the leading edge called a

    gust front. This outflow undercuts warm air being

    drawn into the storms updraft. As the cool air lifts

    the warm moist air water condenses creating

    cloud, which often rolls with the different windsabove and below (wind shear).

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    Shelf Clouds

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    A shelf cloud is a low, horizontal wedge-

    shaped arcus cloud, associated with a

    thunderstorm gust front (or occasionally witha cold front, even in the absence of

    thunderstorms).Unlike a roll cloud, a shelf

    cloud is attached to the base of the parentcloud above it (usually a

    thunderstorm).Rising cloud motion often can

    be seen in the leading (outer) part of the

    shelf cloud, while the underside often

    appears turbulent, boiling, and wind-torn.

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    Stratocumulus Clouds

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