Extremes%20of%2040C%20above%20normal%3A%20what%u2019s%20causing%20%u2018extraordinary%u2019%20heating%20in%20polar%20regions%3F%20%7C%20Polar%20regions%20%7C%20The%20Guardian

Extremes%20of%2040C%20above%20normal%3A%20what%u2019s%20causing%20%u2018extraordinary%u2019%20heating%20in%20polar%20regions%3F%20%7C%20Polar%20regions%20%7C%20The%20Guardian: Concordia station, high on the Antarctic Plateau, hit a record temperature of -11.8C on Friday, more than 40C warmer than seasonal norms. Vostok station registered a temperature of -17.7C, beating its record by 15C.