Data from 2021 Balloon-based Acoustic Seismology Study (BASS) balloon campaign in Oklahoma. Funded by NASA’s Planetary Science and Technology through Analog Research program.

The balloon folder contains directories with dates in the YYMMDD format. Each of these dates is in 2021. Inside each such folder, there are “quake report” documents for that day which track any earthquakes that occurred on that flight day and their distance from the balloons. There are additional folders labeled “balloon_1_upper”, “balloon_1_lower”, “balloon_2_upper” and so on, indicating the balloon serial number for that day and the position of the barometer on the tether (upper or lower). Inside each such folder is a file called “baro.dat” which contains barometer data – the two columns are time in UTC in YYYYMMDD’T’HHmmss.SSSSSS’Z’ format and the atmospheric pressure in Pascal. Another file named “INS.dat” contains balloon position recorded by the IMU in the instrument package with UTC time, latitude (deg), longitude (deg), Altitude (m), North Velocity (m/s), East Velocity (m/s) and Down Velocity (m/s). The INS data typically does not last through the flight as the sensor package ran out of battery towards the end of the flight. Additionally, CSV files beginning with “aprsfi_export” are also provided and show the UTC time, latitude (deg), longitude (deg), speed (m/s), course (deg) and altitude (m) of the balloon(s).