ABoVE: Atmospheric Gas Concentrations from Airborne Flasks, Arctic-CAP, 2017

Sweeney, C.; K. McKain; B.R. Miller; S.E. Michel

This dataset provides atmospheric carbon dioxide (CO2), methane (CH4), carbon monoxide (CO), molecular hydrogen (H2), nitrous oxide (N2O), sulfur hexafluoride (SF6), and other trace gas mole fractions (i.e. "concentrations") from flights over Alaska and the Yukon and Northwest Territories of Canada during the Arctic Carbon Aircraft Profile (Arctic-CAP) monthly sampling campaigns from April-November 2017. The data were derived from laboratory measurements of whole air samples collected by Programmable Flask Packages (PFP) onboard the aircraft. During each of the six monthly campaigns, flights over the Arctic-Boreal Vulnerability Experiment (ABoVE) domain included 25 vertical profiles, from the surface up to 6 km altitude, at locations selected to complement regular long-term vertical profiles, remote sensing data, and ground-based flux tower measurements. Measurements were initiated by the aircraft pilot at predetermined locations within each profile in order to evenly distribute flask sampling points throughout each flight. A total of 408 flask samples were collected during 55 individual flights. The measurements included in this data set are crucial for understanding changes in Arctic carbon cycling and the potential threats posed by thawing of Arctic permafrost.

Whole air samples collected in the PFPs were analyzed on automated systems at the NOAA Earth System Research Laboratory (ESRL) Global Monitoring Division and the Stable Isotope Laboratory of the Institute of Arctic and Alpine Research (INSTAAR) at the University of Colorado Boulder, which also analyze samples from the NOAA/ESRL Global Greenhouse Gas Reference Network.

Citation

In order to use these data, you must cite this data set with the following citation:

Sweeney, C., K. McKain, B.R. Miller, and S.E. Michel. 2019. ABoVE: Atmospheric Gas Concentrations from Airborne Flasks, Arctic-CAP, 2017. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1717

This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use Policy.

Contact

ORNL DAAC

Metadata Access

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APGC Dataset Metadata in JSON-Format

Duomenys ir ištekliai

Papildoma informacija

Laukas Reikšmė
Identifier DOI: 10.3334/ORNLDAAC/1717
Project(s) The Arctic-Boreal Vulnerability Experiment (ABoVE)
Institute NOAA Earth System Research Laboratory (ESRL) Global Monitoring Division
Šaltinis https://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1717
Publication Date 2020-01-28
Versija 1.0
Product Atmospheric gas mole fractions
Sensor Programmable Flask Package onboard the aircraft
Files
  1. ABoVE_april-nov_2017_flask_data.csv
Variables [Units]
  1. sample_year: Year of the sample collection
  2. sample_month: Month of the sample collection- 4, 5, 6 (April, May, and June)
  3. sample_day: Day of the sample collection
  4. sample_hour: Hour of the sample collection
  5. sample_minute: Minute of the sample collection
  6. sample_seconds: Seconds of the sample collection
  7. sample_id: The sample (flask) container ID. A unique row identifier. [CAUTION: If you open this file in Excel, this column might be converted to a date format by default. “event_number” is also a unique row identifier.]
  8. sample_method: A single-character code that identifies the sample collection method. All values = R
  9. sample_latitude: The latitude where the sample was collected (negative (-) numbers indicate samples collected in the southern hemisphere)
  10. sample_longitude: The longitude where the sample was collected (negative (-) numbers indicate samples collected in the western hemisphere)
  11. sample_altitude: The altitude of the sample inlet in meters above sea level (masl) [m]
  12. sample_elevation: Surface elevation (masl) [m]
  13. sample_intake_height: Air sample collection height above ground level (magl) [m]
  14. event_number: A long integer that uniquely identifies the sampling event
  15. BENZ: benzene (C6H6) [ppt]
  16. BRFM: bromoform (CHBr3) [ppt]
  17. C2F6: hexafluoroethane (CF3CF3) [ppt]
  18. C2H2: ethyne (acetylene; C2H2) [ppt]
  19. C2H6: ethane (C2H6) [ppt]
  20. C3H8: propane (C3H8) [ppt]
  21. CCL4: carbon tetrachloride (tetrachloromethane; CCl4) [ppt]
  22. CF4: carbon tetraflouride (tetrafluoromethane; CF4) [ppt]
  23. CH3I: methyl iodide (CH3I) [ppt]
  24. CH4: methane (CH4) [ppb]
  25. CH4C13: methane-isotopic composition C13 [ppt]
  26. CHLF: chloroform (CHCl3) [ppt]
  27. CO: carbon monoxide (CO) [ppb]
  28. CO2: carbon dioxide (CO2) [ppm]
  29. DIBR: dibromomethane (CH2Br2) [ppt]
  30. DICL: dichloromethane (CH2Cl2) [ppt]
  31. F113: CFC-113 (CCl2FCClF2) [ppt]
  32. F115: chloropentafluoroethane (CFC-115; (CClF2CF3)) [ppt]
  33. F11B: CFC-11; (ion 103; CCl3F) [ppt]
  34. F125: HFC-125 (CHF2CF3) [ppt]
  35. F13: chlorotrifluoromethane (CFC-13; (CClF3)) [ppt]
  36. F134A: HFC-134a (CH2FCF3) [ppt]
  37. F142B: HCFC-142b (CH3CF2Cl) [ppt]
  38. F143A: HFC-143a (CH3CF3) [ppt]
  39. F152A: HFC-152a (CH3CHF2) [ppt]
  40. F227E: HFC-227ea (CF3CHFCF3) [ppt]
  41. F23: trifluoromethane (HFC-23; (CHF3)) [ppt]
  42. F236FA: HFC-236fa (CF3CH2CF3) [ppt]
  43. F32: difluoromethane (HFC-32; (CH2F2)) [ppt]
  44. F365M: HFC-365mfc (CH3CF2CH2CF3) [ppt]
  45. F365M: dichlorodifluoromethane (CFC-12; (CCl2F2)) [ppt]
  46. H1211: bromochlorodifluoromethane (halon 1211; CBrClF2) [ppt]
  47. H1301: bromotrifluoromethane (halon 1301; CF3Br) [ppt]
  48. H2: hydrogen (H2) [ppb]
  49. H2402: dibromotetrafluoroethane (halon 2402; CBrF2CBrF2) [ppt]
  50. HF133a: HCFC-133a (CH2ClCF3) [ppt]
  51. HF22: HCFC-22 (CHF2Cl) [ppt]
  52. IC4H10: i-butane (i-C4H10) [ppt]
  53. IC5H12: i-pentane (i-C5H12) [ppt]
  54. MCFA: methyl chloroform (ion 97; CH3CCl3) [ppt]
  55. MEBR: methyl bromide (CH3Br) [ppt]
  56. MECL: methyl chloride (CH3Cl) [ppt]
  57. N2O: nitrous oxide (N2O) [ppb]
  58. NC4H10: n-butane (n-C4H10) [ppt]
  59. NC5H12: n-pentane (n-C5H12) [ppt]
  60. NC6H14: n-hexane (n-C6H14) [ppt]
  61. OCS: carbonyl sulfide (COS) [ppt]
  62. P218: perfluoropropane (C3F8) [ppt]
  63. PCE: tetrachloroethylene (C2Cl4) [ppt]
  64. SF6 (CCGG and HATS): sulfur hexafluoride (SF6) [ppt]
  65. SO2F2: sulfuryl fluoride (SO2F2) [ppt]
  66. *_analysis_group_abbr: Identifies the group within NOAA, GMD or the Institute of Arctic and Alpine Research (INSTAAR) at the University of Colorado Boulder that made the actual measurement: CCGG: NOAA Carbon Cycle Greenhouse Gases (CCGG) HATS: NOAA Halocarbons and other Atmospheric Trace Species (HATS) SIL: INSTAAR Stable Isotope Laboratory (SIL)
  67. *_analysis_value: The measured value. Dry air mole fraction or isotopic composition. See Table 2 for units. Missing values are denoted by -999.99
  68. *_analysis_flag: A three-character field indicating the results of the data rejection and selection process***
Region Alaska, Yukon, Northwest Territories
Spatial Reference
Spatial Resolution Point based
Spatial Coverage Latitude 58.0838 to 71.2712, Longitude -165.4799 to -111.5716
Temporal Coverage 2017-04-27 to 2017-11-04
Temporal Resolution Data were collected in approximately monthly campaigns with 7-8 flight days for each campaign. Measurements were initiated by the aircraft pilot at predetermined locations within each profile in order to evenly distribute flask sampling points throughout each flight.
Formatas CSV
Is Supplement To
Related to

Sweeney, C., J.B. Miller, A. Karion, S.J. Dinardo, and C.E. Miller. 2016. CARVE: L2 Atmospheric Gas Concentrations, Airborne Flasks, Alaska, 2012-2015. ORNL DAAC, Oak Ridge, Tennessee, USA. http://doi.org/10.3334/ORNLDAAC/1404

Sweeney, C., and K. McKain. 2019. ABoVE: Atmospheric Profiles of CO, CO2 and CH4 Concentrations from Arctic-CAP, 2017. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1658

Dataset extent