Category:Polar stratospheric clouds
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Polar stratospheric clouds (also called Nacreous clouds) are distinct from ordinary Iridescent clouds: they only appear at high latitude regions, they form in the stratosphere, about 20 km high; they are made either of ice crystals, or of compounds of water and nitric or sulphuric acids.
The iridescence is the result of diffraction around those very small and homogeneous particles, just like in ordinary iridescent clouds and Coronae.
They are also distinct from Noctilucent clouds, which are typically 80 km high.
See also categories: clouds occurring in the stratosphere in high-latitude regions  | |||||
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Subcategories
This category has only the following subcategory.
Pages in category "Polar stratospheric clouds"
This category contains only the following page.
Media in category "Polar stratospheric clouds"
The following 28 files are in this category, out of 28 total.
Arctic stratospheric cloud.jpg 640 × 469; 14 KB
Eiswolken.jpg 2,048 × 1,536; 943 KB
Filefjell1.JPG 5,184 × 3,456; 5.53 MB
Filefjell2.JPG 5,184 × 3,456; 5.12 MB
Filefjell3.JPG 5,184 × 3,456; 5.27 MB
Filefjell4.JPG 5,184 × 3,456; 5.46 MB
MSRUSL.jpg 3,568 × 2,376; 895 KB
Nacreous clouds Antarctica.jpg 1,024 × 768; 240 KB
Nacreous clouds.jpg 4,000 × 3,000; 2.61 MB
Nube polar esratosferica.jpg 540 × 405; 36 KB
Parelmoerwolken 2FEB2016 019 sml.jpg 998 × 700; 248 KB
Perlemorsky 2.jpg 3,006 × 1,599; 2.58 MB
Perlemorsky 3.jpg 2,685 × 1,224; 1.59 MB
Perlemorsky januar 2008.jpg 2,108 × 1,320; 1.59 MB
Perlemorskyer Polar Stratospheric Cloud.jpg 1,600 × 1,200; 446 KB
Perlemorskyer Polar stratospheric cloud.jpg 2,800 × 1,979; 730 KB
Perlemorskyer.jpg 1,125 × 823; 70 KB
PermaLiv Perlemorsskyer 04-01-20.jpg 5,932 × 3,955; 26.46 MB
PermaLiv perlemorsskyer 08-01-20.jpg 6,000 × 4,000; 17.56 MB
PermaLiv perlemorsskyer 30-12-19.jpg 6,000 × 4,000; 33.2 MB
Polar stratospheric cloud type 2.jpg 1,280 × 960; 88 KB
Polar Stratospheric Cloud type 2.jpg 3,024 × 4,032; 2.32 MB
Polar Stratospheric Cloud type I above Cirrus.jpg 2,460 × 860; 380 KB
Polar Stratospheric Cloud veil type I.jpg 1,024 × 433; 50 KB
Polar stratospheric cloud. Lake Mjosa, Norway, Dec 2014.JPG 3,872 × 2,592; 2.91 MB
Polar stratospheric clouds over Oslo, Norway.jpg 4,272 × 2,848; 1.17 MB
Polar Stratospheric Clouds, Lake Mjosa, Norway, Dec2014. No Photoshop!.JPG 3,872 × 2,592; 3.15 MB
Titan's Giant North Pole Cloud.jpg 991 × 752; 166 KB
