You may not see these amazing clouds in a lifetime: arcus clouds, mammatus and mushroom clouds . . .

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Title: You may not see these amazing clouds in a lifetime: arcus clouds, mammatus and mushroom clouds . . .
Source: http://www.zmescience.com/. . ./7-types-of-rare-and-amazing-clouds-w-pics-and-videos

Shared by: Anonymous
In eFolders: Amazing, Bizarre, Bizarre/Unusuals, Environment, Nature

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7 types of rare and amazing clouds (w/ pics and videos)

Mammatus clouds

mammatus - You may not see these amazing clouds in a lifetime: arcus clouds, mammatus and mushroom clouds . . .

These pouch-like clouds seem to be the harbringers of thunderstorms and tornadoes and (in many cases) that’s exactly what they are. They form after a long and warm periods and the intensely sheared environment in which Mammatus forms makes them every aviator’s nightmare.

mammatus_clouds - You may not see these amazing clouds in a lifetime: arcus clouds, mammatus and mushroom clouds . . .

Altocumulus Castelanus

These jellyfish clouds are formed a mass of moist air moves fast from the Gulf Stream and gets trapped between two layers of dry air. The part from the top rises while the evaporated rain drops form the lower part of the cloud.

Arcus clouds

They are the result a cold front of air or a thundestorm front, or of microburst activity. What happens is the cooler air sinks and spreads across the cloud and the outflow prevents the warm air from being drawn in the storm updraft and the cool air lifts the warm moist air, water condenses creating a cloud which often rolls with the different winds above and below (by wikipedia)
These clouds have two main categories:

a) Roll clouds
Roll clouds seem to be taken out of a new Stargate series or something and they’re an amazing sight to contemple.

roll_cloud - You may not see these amazing clouds in a lifetime: arcus clouds, mammatus and mushroom clouds . . .

roll_cloud2 - You may not see these amazing clouds in a lifetime: arcus clouds, mammatus and mushroom clouds . . .

roll_cloud3 - You may not see these amazing clouds in a lifetime: arcus clouds, mammatus and mushroom clouds . . .

roll_cloud4_asw_opt - You may not see these amazing clouds in a lifetime: arcus clouds, mammatus and mushroom clouds . . .

video:

b) Shelf clouds
The main difference from roll clouds is that shelf clouds are attached to the base of the parent cloud, which as you could have guess, means thunderstorm.

shelf_cloud - You may not see these amazing clouds in a lifetime: arcus clouds, mammatus and mushroom clouds . . .

shelf_cloud3 - You may not see these amazing clouds in a lifetime: arcus clouds, mammatus and mushroom clouds . . .

shelf-cloud-5 - You may not see these amazing clouds in a lifetime: arcus clouds, mammatus and mushroom clouds . . .

shelf-cloud-storm - You may not see these amazing clouds in a lifetime: arcus clouds, mammatus and mushroom clouds . . .

Nacreous clouds

Nacreous clouds are also known as Polar stratospheric clouds (PSCs) and they are formed in the winter polar stratosphere and they have a big impact in creating ozone holes as they further contribute to the depletion of ozone by supporting chemical reactions that produce active chlorine which catalyzes ozone destruction. Bad, bad clouds !!

nacreous_clouds_norway - You may not see these amazing clouds in a lifetime: arcus clouds, mammatus and mushroom clouds . . .

nacreous - You may not see these amazing clouds in a lifetime: arcus clouds, mammatus and mushroom clouds . . .

nacreous2 - You may not see these amazing clouds in a lifetime: arcus clouds, mammatus and mushroom clouds . . .

Also called mother of pearl clouds or sun dogs, these rare clouds are rarely seen, but once you do, you most definitely won’t forget them. But if you haven’t, here are some videos.

Noctilucent clouds

In all fairness, noctilucent clouds should actually be called cloud-like phenomena as they are formed at very big altitudes, from 76 to 85 km (even 100 km by some), making them the highest formed phenomena that could be called clouds; yeah, they are formed on the border between our atmosphere and space. They are extremely rare and usually, even when visible, very very faint.

noctilucent_pp - You may not see these amazing clouds in a lifetime: arcus clouds, mammatus and mushroom clouds . . .

Their seem to be very luminous, but what they actually do is reflect the sunlight from the other side of the earth at night.

Mushroom clouds

Last but most definitely not least, we have mushroom clouds; these very distinctive clouds are the result of smoke, condensed water vapor, or other similar substances after an explosion or eruption. They are especially known from nuclear explosions, but any big enough blast can form them, including natural sources.

mushroom - You may not see these amazing clouds in a lifetime: arcus clouds, mammatus and mushroom clouds . . .

mushroom-cloud - You may not see these amazing clouds in a lifetime: arcus clouds, mammatus and mushroom clouds . . .

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