This dataset contains the observational data collected during three measurement campaigns conducted at the SolarAOT Radiative Transfer Station in Strzyżów, south-eastern Poland (49.878° N, 21.861° E, 444 m a.s.l.), in June and August 2025, during episodes of long-range aerosol transport.
Five balloon soundings were performed with the newly developed AeroSonde system, a lightweight radiosonde-based platform carrying a low-cost SPS30 optical particulate matter sensor together with pressure, temperature, humidity and GPS sensors, transmitting data over LoRaWAN. Each AeroSonde was flown on the same balloon as a Vaisala RS41 radiosonde, and each sounding was accompanied by ground-based lidar observations and by in-situ measurements at the surface. Four of the soundings sampled biomass-burning aerosol advected from North America (9 and 10 June, and two flights on 7 August) and one sampled Saharan mineral dust (29 August). The soundings reached altitudes between 10 and 27 km.
The deposit comprises four parts. The AeroSonde files hold the measurements as received over the radio link, including PM1, PM2.5, PM4 and PM10 mass concentrations, cumulative particle number concentrations in five size classes, typical particle size, pressure and position. The radiosonde files hold vertical profiles of temperature, pressure, relative humidity, horizontal wind speed and position. The lidar files hold the range-corrected signal at 532 nm from the Raymetrics LB10-V-D200 system for the four measurement days, in NetCDF format. The surface files hold the aerosol scattering coefficient at 525 nm and scattering Ångström exponent from the Aurora 4000 polar nephelometer and the aerosol absorption coefficient from the AE31 aethalometer, as daily time series and as the values collocated with each launch. The individual points were listed together with their uncertainties and the effective radius from the LAS 3340.
The data underpin the study describing the AeroSonde system and its first field deployment, in which sensor-derived profiles of aerosol scattering coefficient, scattering Ångström exponent and effective radius were compared with lidar-derived extinction profiles and AERONET columnar retrievals. A full description of file formats, variables, units and processing status is given in README.txt in the root of the deposit and in the README.txt files inside each subdirectory.
