Sunday March 20 marks the start of austral autumn which means it is goodnight from the South Pole for the next six months. As the sun sets in the South Pole, researchers at NOAA’s South Pole Atmospheric Baseline Observatory will not see any light for the next six months. The U.S. Amundsen-Scott South Pole Station is so cold that even during summer it has few visitors. Extreme cold and high altitude makes the observatory isolated from the outside world. It’s last light at #SouthPole today. Sun sets and won’t rise until Oct for NOAA scientists https://t.co/Jd1ap2ALRT pic.twitter.com/Q0f8UBIvob — NOAA (@NOAA) March 20, 2016 NOAA reports: “It’s the coldest, driest, flattest place you can imagine,” said NOAA Corps LT Jesse Milton. The Atmospheric Research Observatory, the third-generation “clean air” facility located at the South Pole, maintains the longest atmospheric carbon dioxide [greenhouse gas] record on earth, besting the more-famous Mauna Loa carbon dioxide record by one year. Continuous long-term atmospheric records show how factories, households and cars thousands of miles away are changing the chemistry and composition of “cleanest air on earth.” Ozone measurements have been instrumental for researchers studying the annual South Pole “Ozone Hole”offsite link. The Antarctic Ozone Hole from Patrick Cullis on Vimeo. Although [...]