Aircraft measurements of refractory black carbon in the Arctic during the HALO-(AC)³ campaign 2022 ...

• Main Authors: Jurányi, Zsófia, Herber, Andreas
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2024
• Subjects: aerosol; black carbon; CVI; HALO-AC³; Polar 6; SP2; Arctic Amplification AC3; Arctic
• Online Access: https://dx.doi.org/10.1594/pangaea.963718; https://doi.pangaea.de/10.1594/PANGAEA.963718

During the HALO-(AC)³ aircraft campaign in 2022, onboard of Polar 6 aircraft, refractory black carbon (BC) mass and number concentration was measured by a single particle soot photometer (SP2) in the mass equivalent diameter range of 70-675 nm. The instrument was installed behind the counter-flow virtual impactor (CVI) inlet, and therefore measured the BC properties of cloud residuals when the aircraft flew through clouds and the counter flow was switched on. During out-of cloud measurements, the counter flow of the CVI was switched off and the instrument measured the total aerosol's BC properties. In the data files, the column CVI_flag indicates if total aerosol was sampled (value of 0), cloud residuals were sampled (value of 1). A CVI_flag value of 2 indicates that the inlet counter flow was currently switched on or off and therefore the measurement is not valid. The provided time resolution is 3 seconds. ...