The Super Trans-Iron Galactic Element Recorder (Super-TIGER) balloon launched at 3:45 p.m. EST on December 8, 2012, from the Long Duration Balloon site near McMurdo Station in Antarctica. It spent 55 days, 1 hour, and 34 minutes aloft at 127,000 feet (38,700 meters), more than four times the altitude of most commercial airliners, and was brought down to end the mission on Friday, February 1. Washington University of St. Louis managed the mission.
On January 24, The Super-TIGER balloon team broke the record for longest flight by a balloon of its size, flying for 46 days. Last Friday after landing, the team broke another record — the longest flight of any heavy-lift scientific balloon, including NASA’s Long Duration Balloons. The previous record was set in 2009 by NASA’s Super Pressure Balloon test flight at 54 days, 1 hour, and 29 minutes.
“Scientific balloons give scientists the ability to gather critical science data for a long duration at a very low relative cost,” said Vernon Jones, NASA’s Balloon Program scientist.
Super-TIGER flew a new instrument for measuring rare elements heavier than iron among the flux of high-energy cosmic rays bombarding Earth from elsewhere in our Milky Way Galaxy. The information retrieved from this mission will be used to understand where these energetic atomic nuclei are produced and how they achieve their high energies.
The balloon gathered so much data that it will take scientists about two years to analyze it fully.
“This has been a very successful flight because of the long duration, which allowed us to detect large numbers of cosmic rays,” said Bob Binns, principal investigator of the Super-TIGER mission. “The instrument functioned very well.”
The balloon was able to stay aloft as long as it did because of prevailing wind patterns at the South Pole. The launch site takes advantage of anticyclonic, or counter-clockwise, winds circulating from east to west in the stratosphere there. This circulation and the sparse population work together to enable long-duration balloon flights at altitudes above 100,000 feet (30,480m).