Raw values of boundary layer SO2 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; Sulfur dioxide mixing ratio; Sulfur dioxide mixing ratio, error; Detection level; Sulfur dioxide; Sulfur dioxide, 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.900911; https://doi.pangaea.de/10.1594/PANGAEA.900911

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). An atmospheric light path with a total length of 3100 m was used.The DOAS evaluation of SO2 was performed between 287.0 and 306.0 nm. Fits with residual optical density RMS (root mean square) values larger than 5.0e-4 were discarded. The resulting mean residual RMS is 1.9e-4. The mean detection limit is 27 pmol/mol.The data sets include the observations below the respective detection limit scattered around 0, which due to the spectral analysis with the DOAS approach can include negative values. Significant data points can be selected using the separately provided detection limits (3-sigma criterion - recommended). Alternatively, the total errors (1-sigma) can be used.The mixing ...