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.
SANAE and Halley are now tied 2-2! The SANAE team launched payload 1K this afternoon at approximately 1643 UT. The payload is now at 36.7 km. For all the balloonatics out there, here is a link to altitude profiles for our first two payloads. They look pretty good. 1B has come down more than 1J has. 1J is still at 35 km after 4 days at float.
We now have four payloads up! There still hasn't been any geomagnetic activity, but the sun is starting to get more active so we hope to see something in the next couple of days.
In other news, the Halley team did a full system test of Payload 1I today. We'll have a look at the data tomorrow but it should otherwise be ready to launch. We still do not anticipate a launch from Halley until mid next week due to high winds predicted (25 knots). SANAE is still looking at launching one or two more payloads tomorrow if the weather cooperates. They are then expecting a big storm which could shut them down for a few days.