Raw values of boundary layer BrO measurements at Neumayer III station, Antarctica from January 2016 to August 2018 ...

• Main Authors: Nasse, Jan-Marcus, Frieß, Udo, Schaefer, Thomas, Jurányi, Zsófia, Hoffmann, Helene, Weller, Rolf
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: DATE/TIME; Bromine monoxide mixing ratio; Bromine monoxide mixing ratio, error; Detection level; Bromine monoxide; Bromine monoxide, error; Date/time start; Date/time end; Total atmospheric light path; Method comment; Air chemistry observatory; Long-Path Differential Optical Absorption Spectroscopy LP-DOAS; Neumayer_based; NEUMAYER III; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.1594/pangaea.900918; https://doi.pangaea.de/10.1594/PANGAEA.900918

From January 2016 until August 2018, an automated Long-Path Differential Optical Absorption Spectroscopy (LP-DOAS) instrument was operated at the German research station Neumayer III (NMIII) in coastal Antarctica to measure trace gas mixing ratios in the boundary layer close to the ground (average altitude above the snow surface: 4m). Two different atmospheric light paths with total lengths of 3100 m and 5900m were used depending on visibility.The DOAS evaluation of BrO was performed between 301.7 and 346.4 nm as well as between 332.5 and 370.5 nm (for subsequent measurements in two different instrumental setups). Fits with residual optical density RMS (root mean square) values larger than 4.0e-4 and 3.5e-4 respectively were discarded. The resulting mean residual RMS are 2.4e-4 and 2.2e-4 respectively. The mean detection limits of the two evaluations are 2.2 and 3.8 pmol/mol.The data sets include the observations below the respective detection limit scattered around 0, which due to the spectral analysis with ...