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A partial view of Saturn's north pole, 2016. Saturn's hexagon is a persistent approximately hexagonal cloud pattern around the north pole of the planet Saturn, located at about 78°N.
A polar stratospheric cloud (PSC) is a cloud that forms in the winter polar stratosphere at altitudes from 15,000 to 25,000 m (49,000 to 82,000 ft). They are best observed during civil twilight , when the Sun is between 1° and 6° below the horizon , as well as in winter and in more northerly latitudes. [ 1 ]
Polar mesospheric clouds over the north pole Polar mesospheric clouds illuminated by the rising Sun Images that show measurements of polar mesospheric clouds over the course of one day. PMC's have four major types based on physical structure and appearance.
The clouds form when the air is stable and winds blow across hills and mountains from a similar direction at different heights through the troposphere, according to the Met Office.
1995 photo of Mars showing approximate size of the polar caps. The planet Mars has two permanent polar ice caps of water ice and some dry ice (frozen carbon dioxide, CO 2).Above kilometer-thick layers of water ice permafrost, slabs of dry ice are deposited during a pole's winter, [1] [2] lying in continuous darkness, causing 25–30% of the atmosphere being deposited annually at either of the ...
Hubble telescope view of the colossal polar cloud on Mars. Other astronomical bodies are also known to have polar vortices, including Venus (double vortex – that is, two polar vortices at a pole), [85] Mars, Jupiter, Saturn, and Saturn's moon Titan. Saturn's south pole is the only known hot polar vortex in the solar system. [86]
The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is the point in the Northern Hemisphere where the Earth's axis of rotation meets its surface. It is called the True North Pole to distinguish from the Magnetic North Pole .
Clouds of the genus nimbostratus tend to bring constant precipitation and low visibility. This cloud type normally forms above 2 kilometres (6,600 ft) [10] from altostratus cloud but tends to thicken into the lower levels during the occurrence of precipitation. The top of a nimbostratus deck is usually in the middle level of the troposphere.