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Nasse, Jan-Marcus; Frieß, Udo; Schaefer, Thomas; Jurányi, Zsófia; Hoffmann, Helene; Weller, Rolf (2023): Long-Path DOAS measurements of boundary layer trace gas mixing ratios at Neumayer III station, Antarctica from January 2016 to August 2018. Institut für Umweltphysik, Universität Heidelberg, PANGAEA, https://doi.org/10.1594/PANGAEA.900919

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Abstract:
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 available and used depending on the spectral window and visibility.
Detectable species were bromine monoxide (BrO), bromine dioxide (OBrO), molecular bromine (Br2), chlorine monoxide (ClO), chlorine dioxide (OClO), iodine monoxide (IO), iodine dioxide (OIO), molecular iodine (I2), sulphur dioxide (SO2), nitrogen dioxide (NO2), nitrous acid (HONO), nitrate (NO3), and ozone (O3). The evaluated data was filtered based on RMS (root mean square) thresholds of optical density residuals of the DOAS fits (see individual data sets for respective values). Detection limits based on a 3-sigma criterion were used and are provided in the data sets for all detectable species.
For BrO, ClO, OClO, IO, SO2, and NO2, observations above the respective detection limit were made. For all absorbers the retrieved mixing ratios/concentrations with respective total errors (corresponding to 1-sigma) are provided. 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 can be used. Since total errors and hence detection limits are determined from spectral information, for absorbers not observed at significant levels (OBrO, Br2, OIO, I2, HONO, and NO3), the respective detection limits can serve as an upper limit for an atmospheric presence.
The mixing ratios provided here were calculated using meteorological data from Neumayer III station already published on PANGAEA. A list of data sets is included in the "Related to" section.
The spectral raw data of the measurements is stored on the measurement data server of the Institute of Environmental Physics, University of Heidelberg.
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Technical details and performance of employed LP-DOAS instrument: Nasse et al. (2019, doi:10.5194/amt-2019-69)
Detailed description of measurements and evaluation: Nasse, Jan-Marcus (2019): Halogens in the coastal boundary layer of Antarctica (PhD Thesis). University of Heidelberg
Keyword(s):
absorption spectroscopy; atmospheric remote sensing; bromine; chlorine; DOAS; iodine; Neumayer; tropospheric halogens; tropospheric trace gases
Related to:
Nasse, Jan-Marcus; Frieß, Udo; Weller, Rolf; Pöhler, Denis; Schmitt, S; Sihler, H; Platt, Ulrich F (in prep.): Reactive halogens in the boundary layer of coastal Antarctica - Results from two years of observations at Neumayer III. Atmospheric Chemistry and Physics Discussions
Further details:
Nasse, Jan-Marcus (2019): Halogens in the coastal boundary layer of Antarctica (PhD Thesis). University of Heidelberg, https://doi.org/10.11588/HEIDOK.00026489
Nasse, Jan-Marcus; Eger, P G; Pöhler, Denis; Schmitt, S; Frieß, Udo; Platt, Ulrich (2019): Recent improvements of long-path DOAS measurements: impact on accuracy and stability of short-term and automated long-term observations. Atmospheric Measurement Techniques, 12(8), 4149-4169, https://doi.org/10.5194/amt-12-4149-2019
Coverage:
Latitude: -70.650000 * Longitude: -8.250000
Date/Time Start: 2016-01-18T11:23:13 * Date/Time End: 2018-08-10T02:01:58
Event(s):
Neumayer_SPUSO * Latitude: -70.650000 * Longitude: -8.250000 * Date/Time: 1983-01-01T00:00:00 * Elevation: 42.0 m * Location: Dronning Maud Land, Antarctica * Campaign: Neumayer_based * Basis: NEUMAYER III * Method/Device: Air chemistry observatory (SPUSO)
Comment:
To calculate the mixing ratios provided in the data set, the meteorological data sets given in the "Related to" sections were used.
Size:
13 datasets

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Datasets listed in this publication series

  1. Nasse, J-M; Frieß, U; Schaefer, T et al. (2023): Raw values of boundary layer Br2 measurements at Neumayer III station, Antarctica from January 2016 to August 2018. https://doi.org/10.1594/PANGAEA.900910
  2. Nasse, J-M; Frieß, U; Schaefer, T et al. (2023): Raw values of boundary layer BrO measurements at Neumayer III station, Antarctica from January 2016 to August 2018. https://doi.org/10.1594/PANGAEA.900918
  3. Nasse, J-M; Frieß, U; Schaefer, T et al. (2023): Raw values of boundary layer ClO measurements at Neumayer III station, Antarctica from January 2016 to August 2018. https://doi.org/10.1594/PANGAEA.900913
  4. Nasse, J-M; Frieß, U; Schaefer, T et al. (2023): Raw values of boundary layer HONO measurements at Neumayer III station, Antarctica from January 2016 to August 2018. https://doi.org/10.1594/PANGAEA.900912
  5. Nasse, J-M; Frieß, U; Schaefer, T et al. (2023): Raw values of boundary layer I2 measurements at Neumayer III station, Antarctica from January 2016 to August 2018. https://doi.org/10.1594/PANGAEA.900907
  6. Nasse, J-M; Frieß, U; Schaefer, T et al. (2023): Raw values of boundary layer IO measurements at Neumayer III station, Antarctica from January 2016 to August 2018. https://doi.org/10.1594/PANGAEA.900914
  7. Nasse, J-M; Frieß, U; Schaefer, T et al. (2023): Raw values of boundary layer NO2 measurements at Neumayer III station, Antarctica from January 2016 to August 2018. https://doi.org/10.1594/PANGAEA.900917
  8. Nasse, J-M; Frieß, U; Schaefer, T et al. (2023): Raw values of boundary layer NO3 measurements at Neumayer III station, Antarctica from January 2016 to August 2018. https://doi.org/10.1594/PANGAEA.900909
  9. Nasse, J-M; Frieß, U; Schaefer, T et al. (2023): Raw values of boundary layer O3 measurements at Neumayer III station, Antarctica from January 2016 to August 2018. https://doi.org/10.1594/PANGAEA.900915
  10. Nasse, J-M; Frieß, U; Schaefer, T et al. (2023): Raw values of boundary layer OBrO measurements at Neumayer III station, Antarctica from January 2016 to August 2018. https://doi.org/10.1594/PANGAEA.900908
  11. Nasse, J-M; Frieß, U; Schaefer, T et al. (2023): Raw values of boundary layer OClO measurements at Neumayer III station, Antarctica from January 2016 to August 2018. https://doi.org/10.1594/PANGAEA.900916
  12. Nasse, J-M; Frieß, U; Schaefer, T et al. (2023): Raw values of boundary layer OIO measurements at Neumayer III station, Antarctica from January 2016 to August 2018. https://doi.org/10.1594/PANGAEA.900906
  13. Nasse, J-M; Frieß, U; Schaefer, T et al. (2023): Raw values of boundary layer SO2 measurements at Neumayer III station, Antarctica from January 2016 to August 2018. https://doi.org/10.1594/PANGAEA.900911