Vertical aerosol, trace gas and weather data taken with a tethered balloon system in summertime in Narsaq, South Greenland during Greenfjord 2023

Abstract and dataset contents: This dataset contains vertical profile measurements, up to altitudes of around 700 m, from a tethered balloon platform including the following: aerosol light absorption coefficients at 450, 525 and 624 nm measured with a Single-channel Tricolour Absorption Photometer (STAP, Brechtel Manufacturing, Inc, USA); particle number size distributions between 186 and 3370 nm measured with a Portable Optical Particle Spectrometer (POPS, Handix Scientific LLC, USA); particle number size distributions and total particle concentration between 8 and 300 nm measured by a miniaturised Scanning Electrical Mobility Sizer (mSEMS, model 9404, Brechtel Manufacturing Inc., USA) with a soft x-ray neutraliser (soft x-ray charger, XRC-05, HCTM Co., Ltd., South Korea), a differential mobility analyser (DMA) column and an advanced mixing condensation particle counter (amCPC, model 9403, Brechtel Manufacturing, In., USA); CO2 mixing ratio (Vaisala CARBOCAP Carbon Dioxide Probe GMP343, Vaisala, Finland); wind direction and wind speed measurements from the SmartTether Weather Sonde (Anasphere, Inc) and temperature and RH measurements by RH/T sensors (SHT85, Sensiron). Measurements were carried out at the Narsaq International Research Station (NIRS) in southern Greenland (60.9158°N, 46.0533°W, 17 m above sea level) during the Greenfjord campaign in June-August 2023. Metadata is provided in the file 'metadata_flight.docx'. Briefly, this dataset contains: Datetime Altitude above ground (m) Pressure (hPa) Air temperature (degC) Relative humidity (%) Wind direction (deg) Wind speed (m s-1) CO2 mixing ratio (ppm) Total particle number concentration between 8 and 300 nm (particles cm-3) Total particle number concentration between 186 and 3370 nm (particles cm-3) Normalised particle concentrations for each bin between 8 and 300 and 186 and 3370 nm (dN/dlogDp) Absorption coefficients for 624, 525 and 450 nm (M m-1) flight number Normalised particle concentrations from the mSEMS instrument between 8 and 300 nm can be found in Lv2_flight_mSEMS.csv. The bin boundaries for the mSEMS and POPS instruments can be found in the mSEMS_bin_diameters.csv and POPS_bin_diameters.csv files. Funding acknowledgements: This work was supported by funding from the Swiss National Science Foundation grant no. 200021_212101, the Swiss Polar Institute grant no. SPI-FLAG-2021-002 Greenfjord, and the ENAC Flagship 2022 ECO-Plains.