The tethered balloon system BELUGA (Balloon-bornE moduLar Utility for profilinG the lower Atmosphere) was operated during a collaborative measurement campaign at Villum Research Station (Greenland) in spring 2024 (2024-03-19 to 2024-04-18). BELUGA performed frequent profiling of the Arctic atmospheric boundary layer to examine transitions between typical states of the Arctic atmospheric boundary layer. The balloon payload included a combined turbulence meteorological probe (TMP), containing a radiosonde-based meteorological package and a hot-wire anemometer package for turbulence, as well as a broadband radiation probe (BP). The present dataset contains the processed up- and downward thermal near-infrared irradiances measured by the BP specified for each of the 28 flights from 24 March to 12 April 2024. The BP data is published with the TMP measurement data.

Each of the netCDF files provides the balloon-borne BELUGA broadband package L2 measurements at Villum Research Station (Greenland) for individual flights, in particular upward and downward thermal-infrared irradiance measurements. Quicklooks for each file are provided as PNGs files.