BARREL (Balloon Array for Radiation belt Relativistic Electron Losses) is a multiple-balloon investigation that will study Earth's Radiation Belts.
Atmospheric losses of relativistic electrons play an important role in radiation belt dynamics; precipitation into the atmosphere may even completely deplete the radiation belts in some cases.
BARREL is the first NASA Living With a Star Geospace Mission of Opportunity, and will support NASA's RBSP (Radiation Belt Storm Probes) mission.
We launched Payload 1C from Halley today at 1803 UT. It was a cloudy day, but the winds dropped to 3-4 knots, so we had a very smooth launch. The SANAE team had marginal conditions so were unable to get a launch off. We also terminated payload 1N at 0806 UT due to its low altitude. Today's launch marks our 11th launch! We still have over two weeks to go in the campaign. We currently have 6 payloads up (1C, 1D, 1G, 1I, 1K, 1O) thought 1K is at very high latitudes near Terra Nova Bay. Tomorrow, geomagnetic activity is expected to pick up. Next launch opportunity is expect to be Friday, but you never know down here!