The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is, subject to the caveats explained below, defined as the point in the northern hemisphere where the Earth's axis of rotation meets the Earth's surface. It should not be confused with the North Magnetic Pole.
The North Pole is the northernmost point on Earth, lying diametrically opposite the South Pole. It defines geodetic latitude 90° North, as well as the direction of True North. At the North Pole all directions point south; all lines of longitude converge there, so its longitude can be defined as any degree value.
While the South Pole lies on a continental land mass, the North Pole is located in the middle of the Arctic Ocean amidst waters that are almost permanently covered with constantly shifting sea ice. This makes it impractical to construct a permanent station at the North Pole (unlike the South Pole). However, the Soviet Union, and later Russia, have constructed a number of manned drifting stations, some of which have passed over or very close to the Pole. In recent years, a number of studies have predicted that the North Pole may become seasonally ice-free due to Arctic shrinkage, with timescales varying from a few years to fifty years or more.
The sea depth at the North Pole has been measured at 4,261 metres (13,980 ft). The nearest land is usually said to be Kaffeklubben Island, off the northern coast of Greenland about 700 km (440 mi) away, though some perhaps non-permanent gravel banks lie slightly further north.
The Earth's axis of rotation – and hence the position of the North Pole – was commonly believed to be fixed (relative to the surface of the Earth) until, in the 18th century, the mathematician Leonhard Euler predicted that the axis might "wobble" slightly. Around the beginning of the 20th century astronomers noticed a small apparent "variation of latitude," as determined for a fixed point on Earth from the observation of stars. Part of this variation could be attributed to a wandering of the Pole across the Earth's surface, by a range of a few meters. The wandering has several periodic components and an irregular component. The component with a period of about 435 days is identified with the 8 month wandering predicted by Euler and is now called the Chandler wobble after its discoverer. The exact point of intersection of the Earth's axis and the Earth's surface, at any given moment, is called the "instantaneous pole", but because of the "wobble" this cannot be used as a definition of a fixed North Pole (or South Pole) when metre-scale precision is required.
It is desirable to tie the system of Earth coordinates (latitude, longitude, and elevations or orography) to fixed landforms. Of course, given plate tectonics and isostasy, there is no system in which all geographic features are fixed. Yet the International Earth Rotation and Reference Systems Service and the International Astronomical Union have defined a framework called the International Terrestrial Reference System.
As early as the sixteenth century, many eminent people correctly believed that the North Pole was in a sea, which in the nineteenth century was called the Polynia or Open Polar Sea. It was therefore hoped that passage could be found through ice floes at favorable times of the year. Several expeditions set out to find the way, generally with whaling ships, already commonly used in the cold northern latitudes.
One of the earliest expeditions to set out with the explicit intention of reaching the North Pole was that of British naval officer William Edward Parry, who in 1827 reached latitude 82°45′ North. In 1871 the Polaris expedition, an American attempt on the Pole led by Charles Francis Hall, ended in disaster. An 1879–1881 expedition commanded by US naval officer George Washington DeLong also ended tragically when their ship, the USS Jeanette, was crushed by ice. Over half the crew, including DeLong, were lost.
In April 1895 the Norwegian explorers Fridtjof Nansen and Fredrik Hjalmar Johansen struck out for the Pole on skis after leaving Nansen's icebound ship Fram. The pair reached latitude 86°14′ North before they abandoned the attempt and went southwards, eventually reaching Franz Josef Land.
In 1897 Swedish engineer Salomon August Andrée and two companions tried to reach the North Pole in the hydrogen balloon Örnen ("Eagle"), but were stranded 300 km north of Kvitøya, the northeasternmost part of the Svalbard Archipelago, and perished on this lonely island. In 1930 the remains of this expedition were found by the Norwegian Bratvaag Expedition.
The Italian explorer Luigi Amedeo, Duke of the Abruzzi and Captain Umberto Cagni of the Italian Royal Navy (Regia Marina) sailed the converted whaler Stella Polare from Norway in 1899. On March 11, 1900 Cagni led a party over the ice and reached latitude 86° 34’ on April 25, setting a new record by beating Nansen's result of 1895 by 35 to 40 kilometres. Cagni barely managed to return back to the camp, remaining there until June 23. On August 16 the Stella Polare left Rudolf Island heading south and the expedition returned to Norway.
The American explorer Frederick Albert Cook claimed to have reached the North Pole on April 21, 1908 with two Inuit men, Ahwelah and Etukishook, but he was unable to produce convincing proof and his claim is not widely accepted.
The conquest of the North Pole was for many years credited to American Navy engineer Robert Peary, who claimed to have reached the Pole on April 6, 1909, accompanied by American Matthew Henson and four Inuit men named Ootah, Seeglo, Egingwah, and Ooqueah. However, Peary's claim remains controversial. The party that accompanied Peary on the final stage of the journey included no one who was trained in navigation and could independently confirm his own navigational work, which some claim to have been particularly sloppy as he approached the Pole.
The distances and speeds that Peary claimed to have achieved once the last support party turned back seem incredible to many people, almost three times that which he had accomplished up to that point. Peary's account of a journey to the Pole and back while traveling along the direct line – the only strategy that is consistent with the time constraints that he was facing – is contradicted by Henson's account of tortuous detours to avoid pressure ridges and open leads.
The British explorer Wally Herbert, initially a supporter of Peary, researched Peary's records in 1989 and concluded that they must have been falsified and that Peary had not reached the Pole. Support for Peary came again in 2005, however, when the British explorer Tom Avery and four companions recreated the outward portion of Peary's journey with replica wooden sleds and Canadian Eskimo Dog teams, reaching the North Pole in 36 days, 22 hours – nearly five hours faster than Peary. Avery writes on his web site that "The admiration and respect which I hold for Robert Peary, Matthew Henson and the four Inuit men who ventured North in 1909, has grown enormously since we set out from Cape Columbia. Having now seen for myself how he travelled across the pack ice, I am more convinced than ever that Peary did indeed discover the North Pole."
The first claimed flight over the Pole was made on May 9, 1926 by US naval officer Richard E. Byrd and pilot Floyd Bennett in a Fokker tri-motor aircraft. Although verified at the time by the US Navy and a committee of the National Geographic Society, this claim has since been disputed.
The first undisputed sighting of the Pole was on May 12, 1926 by Norwegian explorer Roald Amundsen and his American sponsor Lincoln Ellsworth from the airship Norge. Norge, though Norwegian owned, was designed and piloted by the Italian Umberto Nobile. The flight started from Svalbard and crossed the icecap to Alaska. Nobile, along with several scientists and crew from the Norge, overflew the Pole a second time on May 24, 1928 in the airship Italia. The Italia crashed on its return from the Pole, with the loss of half the crew.
In May 1945 an RAF Lancaster of the Aries expedition became the first Commonwealth aircraft to overfly the North Geographic and North Magnetic Poles. The plane was piloted by David Cecil McKinley of the Royal Air Force. It carried an 11-man crew, with Kenneth C. Maclure of the Royal Canadian Air Force in charge of all scientific observations. In 2006, Maclure was honoured with a spot in the Canadian Aviation Hall Of Fame.
Discounting Peary's disputed claim, the first men to set foot at the North Pole were, according to some sources, a Soviet Union party. These are variously described as including Pavel Gordiyenko (or Geordiyenko) and three or five others, or Aleksandr Kuznetsov and 23 others, who landed a plane (or planes) there on April 23, 1948. According to Antarctica.org, three Li-2 planes landed, carrying a total of seven men.
On May 3, 1952, U.S. Air Force Lieutenant Colonel Joseph O. Fletcher and Lieutenant William P. Benedict, along with scientist Albert P. Crary, landed a modified C-47 Skytrain at the North Pole. Some sources consider this (rather than the Soviet mission) to be the first ever landing at the Pole.
The United States Navy submarine USS Nautilus (SSN-571) crossed the North Pole on August 3, 1958, and on March 17, 1959, the USS Skate (SSN-578) surfaced at the Pole, becoming the first naval vessel to do so.
Setting aside Peary's claim, the first confirmed surface conquest of the North Pole was that of Ralph Plaisted, Walt Pederson, Gerry Pitzl and Jean Luc Bombardier, who traveled over the ice by snowmobile and arrived on April 19, 1968. The United States Air Force independently confirmed their position.
On April 6, 1969, Wally Herbert and companions Allan Gill, Roy Koerner and Kenneth Hedges of the British Trans-Arctic Expedition became the first men to reach the North Pole on foot (albeit with the aid of dog teams and air drops). They continued on to complete the first surface crossing of the Arctic Ocean – and by its longest axis, Barrow, Alaska to Svalbard – a feat that has never been repeated. Because of suggestions of Plaisted's use of air transport, some sources classify Herbert's expedition as the first confirmed to reach the North Pole over the ice surface by any means.
In 1982 Sir Ranulph Fiennes and Charles Burton became the first people to cross the Arctic Ocean in a single season. They departed from Cape Crozier, Ellesmere Island, on 17 February 1982 and arrived at the geographic North Pole on 10 April 1982. They travelled on foot and skidoo. From the Pole, they travelled south towards Svalbard but, due to the unstable nature of the ice, ended their crossing at the ice edge after drifting south on an ice floe for 99 days. They were eventually able to walk to their expedition ship "MV Benjamin Bowring" and boarded it on 4 August 1982 at position 80:31N 00:59W. As a result of this journey, which formed a section of the three-year Transglobe Expedition 1979–1982, Fiennes and Burton became the first people to complete a circumnavigation of the world via both North and South Poles, by surface travel alone. This achievement remains unchallenged to this day.
On September 7, 1991, the German research vessel RV Polarstern and the Swedish ice breaker Oden reached the North Pole as the first conventional powered vessels.. Both scientific parties and crew took oceanographic and geological samples and had a common tug of war and a football game on an ice floe. Polarstern again reached the pole exactly 10 years later together with the USCGC Healy.
In recent years, journeys to the North Pole by air (landing by helicopter or on a runway prepared on the ice) or by icebreaker have become relatively routine, and are even available to small groups of tourists through adventure holiday companies.
In April 2007, Dutch performance artist Guido van der Werve performed a work of art at the North Pole. By standing exactly on the Pole for 24 hours and turning slowly clockwise (the earth is turning counterclockwise), just by following his own shadow, Van der Werve literally did not turn with the world for one day. This performance is called: 'nummer negen [Dutch for Number Nine], the day I didn't turn with the world'. Van der Werve time-lapsed the 24 hours to 9 minutes.
In July 2007, British endurance swimmer Lewis Gordon Pugh completed a 1 km swim at the North Pole. His feat, undertaken to highlight the effects of climate change, took place in clear water that had opened up between the ice floes. His later attempt to paddle a kayak to the North Pole in late 2008, following the erroneous prediction of clear water to the Pole, was stymied when his expedition found itself stuck in thick ice after only three days. The expedition was then abandoned.
A 2007 episode of the BBC motoring show Top Gear, in which the presenters were described as journeying to the "North Pole," was in fact an expedition to the 1996 position of the North Magnetic Pole.
On August 2, 2007, a Russian VASU made the first ever manned descent to the ocean bottom at the North Pole, to a depth of 4.3 km, as part of a research programme in support of Russia's 2001 territorial claim to a large swathe of the Arctic Ocean. The descent took place in two MIR submersibles and was led by Soviet and Russian polar explorer Arthur Chilingarov. In a symbolic act, the Russian flag was placed on the seabed at the exact position of the Pole.
The expedition is the latest in a decades-long series of moves by Russia intended to show that it is the dominant influence in the Arctic. The warming Arctic climate and summer retreat of sea ice there has suddenly turned the attention of countries from China to the United States toward the top of the world, where resources and shipping routes may soon be exploitable.
At the North Pole, the sun is permanently above the horizon during the summer months and permanently below the horizon during the winter months. Sunrise is just before the vernal equinox (around March 19); the sun then takes three months to reach its highest point of about 23½° elevation at the summer solstice (around June 21), after which time it begins to sink, reaching sunset just after the autumnal equinox (around September 24). When the sun is visible in the polar sky, it appears to move in a clockwise circle above the horizon. This circle gradually rises from near the horizon just after the vernal equinox to its maximum elevation (in degrees) above the horizon at summer solstice and then sinks back toward the horizon before sinking below it at the autumnal equinox.
A civil twilight period of about two weeks occurs before sunrise and after sunset, a nautical twilight period of about five weeks occurs before sunrise and after sunset and an astronomical twilight period of about seven weeks occurs before sunrise and after sunset.
These effects are caused by a combination of the Earth's axial tilt and its revolution around the sun. The direction of the Earth's axial tilt, as well as its angle relative to the plane of the Earth's orbit around the sun, remains very nearly constant over the course of a year (both change very slowly over long time periods). At northern midsummer the North Pole is facing towards the sun to its maximum extent. As the year progresses and the Earth moves around the sun, the North Pole gradually turns away from the sun until at midwinter it is facing away from the Sun to its maximum extent. A similar sequence is observed at the South Pole, with a six-month time difference.
In most places on Earth, local time is determined by longitude, such that the time of day is more-or-less synchronised to the position of the sun in the sky (for example, at midday the sun is roughly at its highest). This line of reasoning fails at the North Pole, where the sun rises and sets only once per year, and all lines of longitude, and hence all time zones, converge. There is no permanent human presence at the North Pole, and no particular time zone has been assigned. Polar expeditions may use any time zone that is convenient, such as GMT, or the time zone of the country they departed from.
The North Pole is significantly warmer than the South Pole because it lies at sea level in the middle of an ocean (which acts as a reservoir of heat), rather than at altitude in a continental land mass.
Winter (January) temperatures at the North Pole can range from about −43 °C (−45 °F) to −26 °C (−15 °F), perhaps averaging around −34 °C (−30 °F). Summer temperatures (June, July and August) average around the freezing point (0 °C, 32 °F).
The sea ice at the North Pole is typically around two or three meters thick, though there is considerable variation and occasionally the movement of floes exposes clear water. Studies have shown that the average ice thickness has decreased in recent years. Many attribute this decrease to global warming, though this conclusion is disputed by some. Reports have also predicted that within a few decades the Arctic Ocean will be entirely free of ice in the summer months. This may have significant commercial implications; see "Territorial Claims," below.
Polar bears are believed rarely to travel beyond about 82° North owing to the scarcity of food, though tracks have been seen in the vicinity of the North Pole, and a 2006 expedition reported sighting a polar bear just one mile (1.6 km) from the Pole. The ringed seal has also been seen at the Pole, and Arctic foxes have been observed less than 60 km away at 89°40′ N.
Birds seen at or very near the Pole include the Snow Bunting, Northern Fulmar and Black-legged Kittiwake, though some bird sightings may be distorted by the tendency of birds to follow ships and expeditions.
Fish have been seen in the waters at the North Pole, but these are probably few in number. A member of the Russian team that descended to the North Pole seabed in August 2007 reported seeing no sea creatures living there. However, it was later reported that a sea anemone had been scooped up from the seabed mud by the Russian team and that video footage from the dive showed unidentified shrimps and amphipods.
Under international law, no country currently owns the North Pole or the region of the Arctic Ocean surrounding it. The five surrounding Arctic countries, Russia, Canada, Norway, Denmark (via Greenland), and the United States (via Alaska), are limited to a 200-nautical-mile (370 km; 230 mi) Exclusive Economic Zone around their coasts, and the area beyond that is administered by the International Seabed Authority.
Upon ratification of the United Nations Convention on the Law of the Sea, a country has a ten year period to make claims to extend its 200 mile zone. Norway (ratified the convention in 1996), Russia (ratified in 1997), Canada (ratified in 2003) and Denmark (ratified in 2004) have all launched projects to base claims that certain Arctic sectors should belong to their territories.
In some Western cultures, the geographic North Pole is the residence of Santa Claus. Canada Post has assigned postal code H0H 0H0 to the North Pole (referring to Santa's traditional exclamation of "Ho-ho-ho!").
This association reflects an age-old esoteric mythology of Hyperborea that posits the North Pole, the otherworldly world-axis, as the abode of God and superhuman beings (see Joscelyn Godwin, Arktos: The Polar Myth). The popular figure of the pole-dwelling Santa Claus thus functions as an esoteric archetype of spiritual purity and transcendence (). As Henry Corbin has documented, the North Pole plays a key part in the cultural worldview of esoteric Sufism and Iranian mysticism. "The Orient sought by the mystic, the Orient that cannot be located on our maps, is in the direction of the north, beyond the north."  The Pole is also identified with a mysterious mountain in the Arctic Ocean, called Mount Qaf (cf. Rupes Nigra), whose ascent, like Dante's climbing of the Mountain of Purgatory, represents the pilgrim's progress through spiritual states. In Iranian theosophy, the heavenly Pole, the focal point of the spiritual ascent, acts as a magnet to draw beings to its "palaces ablaze with immaterial matter." 
Fantasy flights often refer to a flight to the North Pole for these same reasons.
The North Pole is the northernmost point in the world.
Although there's more than one definition of "the North Pole", the most popularly accepted one is geographic: a fixed location in the northern hemisphere at the Earth's axis of rotation, latitude 90°N (longitude not applicable). Unlike the South Pole, which is located on the continent of Antarctica, the geographic North Pole is covered by nothing but a sheet of shifting ice on the surface of the Arctic Ocean. There is thus no permanent habitation nor even an official marker for the position, as the ice moves from year to year. Although it was once an elusive goal that took the lives of many explorers, thanks to modern aviation and other technology, it is now the destination of commercial travel expeditions.
"The North Pole" is also defined magnetically. One definition is the point on the surface that magnetic compasses point to, following the Earth's geomagnetic field. Another uses the Earth's more broad magnetosphere (which affects the Aurora Borealis) as a reference. These positions drift, and are currently off Ellef Ringnes Island (one of the Queen Elizabeth Islands in Nunavut, Canada), and off Qaanaaq, Greenland, respectively.
A somewhat arbitrary definition is the Northern Pole of Inaccessibility, the farthest point from any coastline. This is a fixed location (barring major sea level changes that might redefine coastlines) at 84°03'N 174°51'W.
The Arctic Circle city of Rovaniemi, Finland and the nearly-Arctic Interior Alaskan city of North Pole both somewhat disingenuously claim to be the home of Santa Claus, and North Pole, Bracebridge, Ontario, Canada has a year-round Santa Claus park as does New York.
The North Pole can only be reached on expeditions specifically mounted for the purpose. Most travel primarily by air, sometimes with a component traversing the last leg of the journey on the ice. The other alternative is traveling by boat, on an ice-breaker cutting through the Arctic Ocean.
On April 9, 1909, Robert Peary, his partner Matthew Henson, and four Inuit reached the North Pole. They are recognized as the first, although there is still controversy surrounding this claim, as some believe the men missed the North Pole by several miles.
Most expeditions take place in April when the Arctic night is over but the winter ice is still strong. They start from Longyearbyen in the Svalbard islands, and continue on to the Pole by a combination of plane and helicopter. They usually stop at the Russian polar research station and "ice airport" Barneo (also spelled "Borneo") which is set up each Spring at about 89°N and drifts on the Arctic ice pack. Some expeditions drop travelers here or somewhere else short of the Pole itself, leaving them to finish on the ice. A less demanding and more affordable option are flying sightseeing expeditions starting in Germany or the UK, using a long-haul aircraft to overfly Norway, the Svalbard Archipelago, and the North Pole itself, without landing but flying low over areas of interest.
There are two commercial sea vessels making regular trips to the North Pole, the nuclear-powered Russian ice-breaker Yamal, and 50 Years of Victory, operated by the Murmansk Shipping Company. They depart from Murmansk (tour packages beginning in Helsinki and in Moscow), making several two-week journeys in the Summer (when the ice is easier to get through). Yamal is equipped with 50 cabins and suites with private bathrooms and exterior windows, fine dining, heated indoor pool, gym, library, etc. 50 Years of Victory, the largest icebreaker ever built, has 64 cabins in five categories. Voyages are booked by a variety of tour operators (including some of the air-excursion outfits, plus several others), generally at about US$18,000-US$25,000 per person (double occupancy).
Crosscountry skis and dogsleds are about the only viable transportation option near the North Pole; staying with your tour group is advisable.
The ice terrain at the North Pole tends to be rather flat, though some interesting formations of snow and ice can be found. There's only one protracted sunrise and sunset each year (which will not be during your visit). Tour operators stick a sign pole into the ice, but that's unofficial and purely for photographic purposes.
Despite their name, polar bears don't usually venture this far north (preferring the southern "coastal" parts of the Arctic ice cap, with better swimming opportunities.
There are few formal recreational opportunities at the North Pole. Each year, however, there is a marathon foot race called the North Pole Marathon organized by Polar Running Adventures. Adventurous types may try searching for Santa Claus but it is highly unlikely you'll be able to locate him, as blizzards are common in most areas.
It is impossible to buy anything at the North Pole; you should bring everything you might need
You or your tour operator will have to bring along all of your food. Celebratory caviar is traditional upon arriving at the Pole itself.
The North Pole's ocean-formed ice contains salt, making it unsuitable for drinking, even when thawed. BYOB. Celebratory champagne is traditional; vodka at -40°C while standing on an iceberg is also quite appropriate.
Although there are no permanent accommodations at or near the Pole, temporary camps can be set up, providing heated shelter for one or more nights. Barneo has semi-permanent heated shelters, which are commonly used by expeditions spending more than a day on the ice.
Most visitors to the North Pole head south.
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The North Pole is the point that is farthest north on the planet Earth. It is the point on which axis of Earth turns. It is in the Arctic Ocean and it's cold there because the sun does not shine there for about half a year. The ocean around the pole is always very cold and it is covered by a thick sheet of ice.
There is a star, called the North Star or the Pole Star, that always appears in the sky above the North Pole. For hundreds of years sailors were able to tell how far north they were by seeing how high the North Star appeared in the sky.
Polar bears live in the Arctic. They are animals that eat meat, so they need to hunt to remain lively. The bears, in a general way, usually are attack anything near them to protect themselves and their cubs.