South Pole
In midsummer, as the sun reaches its maximum elevation of about 23.5 degrees, high temperatures at the South Pole in January average at . As the six-month "day" wears on and the sun gets lower, temperatures drop as well: they reach around sunset (late March) and sunrise (late September). In midwinter, the average temperature remains steady at around . The highest temperature ever recorded at the Amundsen–Scott South Pole Station was on Christmas Day, 2011, and the lowest was on June 23, 1982 (for comparison, the lowest temperature directly recorded anywhere on earth was at Vostok Station on July 21, 1983, though was measured indirectly by satellite in East Antarctica between Dome A and Dome F in August 2010). Mean annual temperature at the South Pole is -49.3 °C (-56.7 °F).
Edward Adrian Wilson
On 15 June 1910, Wilson set sail from Cardiff on the "Terra Nova", as Chief of the Scientific Staff of Scott's final expedition. After making stops in Madeira, South Trinidad, South Africa, Australia and New Zealand, the "Terra Nova" was trapped for 3 weeks by pack ice, and finally arrived at Cape Evans in McMurdo Sound in early January 1911. A base camp hut was built and 3 weeks later work began to establish the supply depots in preparation for the journey to the South Pole the following austral spring. Deteriorating weather conditions and weak, unacclimatised ponies meant that the main supply point, One Ton Depot, was laid 35 miles (56 km) further north of its planned location at 80°S, something that was to prove critical during the return journey from the Pole the following year.
In the austral winter of 1911, Wilson led "The Winter Journey", a journey with Henry Robertson Bowers and Apsley Cherry-Garrard, to the Emperor penguin breeding grounds at Cape Crozier to collect eggs for scientific study. The 60-mile journey was made in almost total darkness, with temperatures reaching as low as . Frozen and exhausted, they reached their goal only to be stopped by a blizzard during which their tent was ripped away and carried off by the wind, leaving the men trapped in their sleeping bags for a day and a half under a thickening drift of snow. When the winds subsided, by great fortune they found their tent lodged about half a mile away in rocks. Having successfully collected three eggs, and desperately exhausted, they returned to Cape Evans on 1 August 1911, five weeks after setting off. Cherry-Garrard later described this expedition in his memoir, "The Worst Journey in the World".
On 1 November 1911, fourteen men set off from Cape Evans on the long trip to the South Pole. 79 days later, Wilson was one of the five-man Polar party that reached the Pole on 18 January 1912, only to find the pole had been claimed by Norwegian Roald Amundsen and his team just five weeks earlier.