Barbero, Albane (2022): Data Set for the 2019-2020 summer campaign: Summer variability of the atmospheric NO2:NO ratio at Dome C, on the East Antarctic Plateau [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.942015
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Abstract:
Atmospheric abundances of Nitrogen dioxide (NO2), Nitrogen oxide (NOx), Nitric oxide (NO) and Ozone (O3) have been measured at Antarctic station Dome C (-75.10 lat., 123.33 long., 3233 m a.s.l). They have been retrieved from direct and in-situ atmospheric measurements using newly developed optical instruments based on absorption spectroscopy (incoherent broadband cavity enhanced absorption spectroscopy or IBBCEAS). These instruments directly measure NO2 with a detection limit of 30 pptv (parts per trillion by volume or 1E-12 mol/mol) (3σ). We performed two sets of measurements in December 2019 (4th to 9th) and January 2020 (16th to 25th) to capture the early and late photolytic season, respectively. The dataset also contains photolysis rate coefficients of Nitrogen dioxide and Ozone, and the Ozone production rate.
Supplement to:
Barbero, Albane; Grilli, Roberto; Frey, Markus M; Blouzon, Camille; Helmig, Detlev; Caillon, Nicolas; Savarino, Joël (2022): Summer variability of the atmospheric NO 2 : NO ratio at Dome C on the East Antarctic Plateau. Atmospheric Chemistry and Physics, 22(18), 12025-12054, https://doi.org/10.5194/acp-22-12025-2022
Further details:
Kukui, A; Legrand, M; Preunkert, Suzanne; Frey, Markus M; Loisil, R; Gil Roca, J; Jourdain, Bruno; King, Martin; France, J L; Ancellet, Gerard (2014): Measurements of OH and RO2 radicals at Dome C, East Antarctica. Atmospheric Chemistry and Physics, 14(22), 12373-12392, https://doi.org/10.5194/acp-14-12373-2014
Funding:
Institut Polaire Français Paul Emile Victor (IPEV), grant/award no. 1177: CAPOXI 35-75: Oxidizing capacity of the atmosphere 35-75 °S
Coverage:
Latitude: -75.100000 * Longitude: 123.330000
Date/Time Start: 2019-12-04T11:30:00 * Date/Time End: 2020-01-25T02:30:00
Event(s):
Comment:
Calculation of the O3 production rate P_{O3}:
P_{O3} = (k_{RO2+NO}[RO2] + k_{HO2+NO}[HO2]) * [NO] * V
with k_{RO2+NO} and k_{HO2+NO} the kinetic rate coefficients of the reactions RO2 + NO → NO2 + RO and HO2 + NO → NO2 + OH, respectively, expressed in cm**3/molecules/s; [RO2] and [HO2], the species concentrations expressed in molecule/cm**3 and derived from the correlation between J(NO2) and [RO2] and the [RO2]/[HO2] ratio (Kukui et al., 2014); [NO] the concentration of NO expressed in molecule/cm**3; and V the arbitrary volume expressed as 1 cm * 1cm * H_PBL cm with polar boundary layer height H_PBL, given by the MAR regional model.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Barbero, Albane | Geocode – UTC; Center of an hourly averaging interval | ||
| 2 | Date/Time local | Date/Time local | Barbero, Albane | Center of an hourly averaging interval - local time at Dome C, i.e. UTC+8 | ||
| 3 | Nitrogen dioxide | NO2 | ppbv | Barbero, Albane | Incoherent Broadband Cavity Enhanced Absorption Spectroscopy (IBBCEAS) | using an IBB-NO2 analyser |
| 4 | Nitrogen oxide | NOx | ppbv | Barbero, Albane | Incoherent Broadband Cavity Enhanced Absorption Spectroscopy (IBBCEAS) | using an IBB-NOx analyser |
| 5 | Nitric oxide | NO | ppbv | Barbero, Albane | Calculated | using NO2 and NOx observations (NO=NOx-NO2) |
| 6 | Ozone | O3 | ppbv | Barbero, Albane | UV photometric ozone analyzer (Thermo Scientific, Model 49i) | |
| 7 | Ozone, change rate | dO3/dt | ppbv/h | Barbero, Albane | Calculated | O3 variations calculations in ppb/h |
| 8 | Nitrogen dioxide photolysis rate coefficient | J(NO2) | 1/s | Barbero, Albane | Spectral radiometer (SPRA) | NO2 photolysis rate constant (in s-1) reconstructed measurements using a MetCon 2π spectral radiometer a broadband UV radiometer (spectral range 305-385 nm) |
| 9 | Ozone photolysis rate coefficient | J(O1D) | 1/s | Barbero, Albane | Spectral radiometer (SPRA) | O1D photolysis rate constant (in s-1) reconstructed measurements using a MetCon 2π spectral radiometer a broadband UV radiometer (spectral range 305-385 nm) |
| 10 | Nitrogen dioxide | NO2 | 1/cm3 | Barbero, Albane | Incoherent Broadband Cavity Enhanced Absorption Spectroscopy (IBBCEAS) | NO2 calculations in molec/cm3 using the ideal gas law and meteorological data from local automatic weather station (AWS- Vaisala Milos 520) |
| 11 | Nitric oxide | NO | 1/cm3 | Barbero, Albane | Calculated | NO calculations in molec/cm3 using the ideal gas law and meteorological data from local automatic weather station (AWS- Vaisala Milos 520) |
| 12 | Ozone | O3 | 1/cm3 | Barbero, Albane | UV photometric ozone analyzer (Thermo Scientific, Model 49i) | O3 calculations in molec/cm3 using the ideal gas law and meteorological data from local automatic weather station (AWS- Vaisala Milos 520) |
| 13 | Nitrogen dioxide/Nitric oxide, ratio | NO2/NO | Barbero, Albane | Calculated | NO2:NO ratio calculations from the NO2 and NO data | |
| 14 | Ozone production rate | O3 prod | ppbv/h | Barbero, Albane | Calculated | P_{O3}, cf dataset comment for details |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
3198 data points
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