BARREL Mission X-ray Spectrometer Data from Antarctic and Arctic Balloon Campaigns

The BARREL mission's 2013-2016 balloon campaigns collected data from over 50 stratospheric balloons launched from Antarctica and Sweden. This dataset contains six channels of fast time resolution (50 ms) Bremsstrahlung X-ray spectra, with nominal energy coverage from 0 MeV to 1.5 MeV. It was produced by NASA to study relativistic electron precipitation from Earth's radiation belts.

Use Cases

• Analyze temporal variations in relativistic electron precipitation by correlating X-ray flux across the six FSPC spectrometer channels (FSPC1a, FSPC1b, FSPC1c, FSPC2, FSPC3, FSPC4).
• Characterize the spatial scale of precipitation events using the multi-balloon array data collected across different magnetic local times.
• Validate and augment in-situ measurements from the Van Allen Probes mission by comparing balloon-based X-ray spectra with satellite particle data.
• Study the energy spectrum of precipitating electrons by analyzing the Bremsstrahlung X-ray data across the 0-1.5 MeV nominal energy range.

Strengths

• Data originates from over 50 stratospheric balloon flights conducted across four dedicated campaigns.
• Provides six distinct channels of X-ray spectral data (FSPC1a-FSPC4) with a fast 50-millisecond time resolution.
• Campaigns were coordinated with other major scientific missions like Van Allen Probes and the EISCAT radar system.

Limitations

• The dataset is provided in specialized file formats (BIN, PDF, TEXT, HTML) which may require specific tools or expertise to process.
• Specific metadata such as row count, column structure, and file size are not provided in the input, complicating initial assessment.
• Data collection was limited to specific campaign periods (2013-2016) and geographic regions (Antarctica and Arctic Sweden).

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Measured by X-ray spectrometers and DC magnetometers carried on stratospheric balloons.

Time Range

Balloon campaigns conducted in 2013, 2014, 2015, and 2016.

Freshness

The dataset metadata was last updated in March 2026, indicating active curation.

Geography

Launches from Halley Bay and SANAE IV base in Antarctica, and the Esrange Space Center in Kiruna, Sweden.