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The polar regions, also called the frigid zones or polar zones, of Earth are Earth's polar ice caps, the regions of the planet that surround its geographical...

The polar climate regions are characterized by a lack of warm summers but with varying winters. Every month a polar climate has an average temperature...

A polar ice cap or polar cap is a high-latitude region of a planet, dwarf planet, or natural satellite that is covered in ice. There are no requirements...

Polar night is a phenomenon in the northernmost and southernmost regions of Earth where night lasts for more than 24 hours. This occurs only inside the...

A polar route is an aircraft route across the uninhabited polar ice cap regions. The term "polar route" was originally applied to great circle navigation...

5° to 66.5° N/S of Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout...

captured energy between geographic regions (as with the equatorial region receiving more sunlight than the polar regions) drive atmospheric and ocean currents...

Muslims do not segregate themselves. In areas where the midnight sun or polar night renders the five daily prayers impossible to tie to dusk and dawn...

The observance of Jewish law (halakhah) in the polar regions of Earth presents unique problems. Many mitzvot, such as Jewish prayer and the Sabbath, rely...

Polar deserts are the regions of Earth that fall under an ice cap climate (EF under the Köppen classification). Despite rainfall totals low enough to...

The International Polar Years (IPY) are collaborative, international efforts with intensive research focus on the polar regions. Karl Weyprecht, an Austro-Hungarian...

around which a body rotates Polar climate, the climate common in polar regions Polar regions of Earth, locations within the polar circles, referred to as...

The polar wind or plasma fountain is a permanent outflow of plasma from the polar regions of Earth's magnetosphere, caused by the interaction between...

Polar ecology is the relationship between plants and animals in a polar environment. Polar environments are in the Arctic and Antarctic regions. Arctic...

year and is now at a mean latitude of 66°33′50.1″ S. Polar circles are often equated with polar regions of Earth. Due to their inherent climate environment...

from a little over 70 minutes at the Equator, to many hours in the polar regions. The period of twilight is shortest at the Equator, where the equinox...

third letter of the string. In the polar regions, a different convention is used. South of 80°S, UPS South (Universal Polar Stereographic) is used instead...

The planet Mars has two permanent polar ice caps of water ice and some dry ice (frozen carbon dioxide, CO2). Above kilometer thick layers of water ice...

complexity. The form of the aurora, occurring within bands around both polar regions, is also dependent on the amount of acceleration imparted to the precipitating...

sea, which the north has much less of. The cold temperatures in the polar regions cause air to descend, creating the high pressure (a process called subsidence)...