Nasse, Jan-Marcus; Frieß, Udo; Schaefer, Thomas; Jurányi, Zsófia; Hoffmann, Helene; Weller, Rolf (2023): Raw values of boundary layer IO measurements at Neumayer III station, Antarctica from January 2016 to August 2018 [dataset]. Institut für Umweltphysik, Universität Heidelberg, PANGAEA, https://doi.org/10.1594/PANGAEA.900914, In: Nasse, J-M et al. (2023): Long-Path DOAS measurements of boundary layer trace gas mixing ratios at Neumayer III station, Antarctica from January 2016 to August 2018 [dataset publication series]. 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 used depending on visibility.
The DOAS evaluation of IO was performed between 424.3 and 451.3 nm until February 15th, 2017 when another grating was used. After February 15th, 2017, the evaluation was performed between 411 and 438 m. Fits with residual optical density RMS (root mean square) values larger than 3.5e-4 (later 2.0e-4) were discarded. The resulting mean residual RMS are 2.2e-4 and 3.2e-4 (1.8e-4 later) respectively. The mean detection limit is 4.5 (2.6 later) 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 can be used.
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 of the bibliography this data set is part of.
The spectral raw data of the measurements is stored on the measurement data server of the Institute of Environmental Physics, University of Heidelberg.
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: 2016-01-18T11:32:45 * Date/Time End: 2018-08-10T01:20:36
Minimum Elevation: 42.0 m * Maximum Elevation: 42.0 m
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)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Nasse, Jan-Marcus | Geocode | ||
| 2 | Iodine monoxide mixing ratio | IO mix ratio | pmol/mol | Nasse, Jan-Marcus | Long-Path Differential Optical Absorption Spectroscopy (LP-DOAS) | |
| 3 | Iodine monoxide mixing ratio, error | IO mix ratio e | ± | Nasse, Jan-Marcus | Long-Path Differential Optical Absorption Spectroscopy (LP-DOAS) | |
| 4 | Detection level | dl | Nasse, Jan-Marcus | IO in pmol/mol | ||
| 5 | Iodine monoxide | IO | 1/cm3 | Nasse, Jan-Marcus | Long-Path Differential Optical Absorption Spectroscopy (LP-DOAS) | |
| 6 | Iodine monoxide, error | IO e | ± | Nasse, Jan-Marcus | Long-Path Differential Optical Absorption Spectroscopy (LP-DOAS) | |
| 7 | Detection level | dl | Nasse, Jan-Marcus | IO in molec/cm**3 | ||
| 8 | Date/time start | Date/time start | Nasse, Jan-Marcus | of spectra aquisition | ||
| 9 | Date/time end | Date/time end | Nasse, Jan-Marcus | of spectra aquisition | ||
| 10 | Total atmospheric light path | Light path | m | Nasse, Jan-Marcus | of measurement | |
| 11 | Method comment | Method comm | Nasse, Jan-Marcus | Spectral region of the DOAS evaluation [nm] |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
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129820 data points
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