Aerosol optical absorption coefficients at seven wavelengths in 10 min resolution measured in the Swiss container during MOSAiC 2019/2020 ...

• Main Authors: Heutte, Benjamin, Beck, Ivo, Quéléver, Lauriane, Jokinen, Tuija, Laurila, Tiia, Dada, Lubna, Schmale, Julia
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: aerosol; aerosol absorption coefficient; Arctic aerosol; MOSAiC_ATMOS; Event label; DATE/TIME; LATITUDE; LONGITUDE; Aerosol absorption at 370 nm; Aerosol absorption at 470 nm; Aerosol absorption at 520 nm; Aerosol absorption at 590 nm; Aerosol absorption at 660 nm; Aerosol absorption at 880 nm; Aerosol absorption at 950 nm; Flag, pollution; Aethalometer; Aethalometer, AE33, Magee Scientific; PS122/1; PS122/2; PS122/3; PS122/4; PS122/5; Polarstern; Multidisciplinary drifting Observatory for the Study of Arctic Climate MOSAiC; Arctic; black carbon
• Online Access: https://dx.doi.org/10.1594/pangaea.961756; https://doi.pangaea.de/10.1594/PANGAEA.961756

This dataset contains aerosol optical absorption coefficients at seven different wavelengths (babs(λ)), averaged to 10 min time resolution, measured during the year-long MOSAiC expedition from October 2019 to September 2020. The measurements were performed in the Swiss container on the D-deck of Research Vessel Polarstern, using a commercial aethalometer (model AE33, Magee Scientific, Berkeley, USA). The instrument was located behind an automated valve, which switched hourly between a total and an interstitial air inlet, with upper cutoff sizes of 40 and 1 μm respectively. The inlet flow, 2 liters per minute, was verified biweekly. The dual spot technology of the instrument allowed for a real-time compensation of what is known as the loading effect (Drinovec et al., 2015). The instrument reports equivalent black carbon (eBC) mass concentrations at seven different wavelengths (370, 470, 520, 590, 660, 880, and 950 nm), computed from the measured light attenuation at each wavelength on the filter (equation ... : We thank the Laboratory for Atmospheric Chemistry at the Paul Scherrer Institute for providing the AE33 instrument.We extracted 10 min time resolution positional data from the following datasets: Rex, M (2020, doi:10.1594/PANGAEA.924669), Haas, C (2020, doi:10.1594/PANGAEA.924672), Kanzow, T (2020, doi:10.1594/PANGAEA.924678), Rex, M (2021, doi:10.1594/PANGAEA.926830) and Rex, M (2021, doi:10.1594/PANGAEA.926911). ...