CARVE atmospheric gas concentrations, airborne flasks, Alaska, 2012-2015

Sweeney, Colm ; Miller, J.B.; Karion, A.; Dinardo S.J.; and Miller, C.E.

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 airborne campaigns over the Alaskan and Canadian Arctic for the Carbon in Arctic Reservoirs Vulnerability Experiment (CARVE). The CARVE flight campaigns took place from 2012 to 2015 between the months of March and November to enable investigation of both seasonal and inter-annual variability in atmospheric gas abundances. The data were derived from laboratory measurements of whole air samples collected by a Programmable Flask Package (PFP) onboard the CARVE aircraft. Air samples were collected at strategic intervals to coincide with the overflight of a ground site of interest, or when interesting geophysical conditions were encountered. While most of these samples were collected near the surface in the planetary boundary layer (PBL), on almost every flight samples were also collected in the free troposphere. A minimum of 12 flask samples were collected per flight. Whole air samples collected in the PFPs were analyzed on automated systems at the NOAA Earth System Research Laboratory (ESRL) Global Monitoring Division in Boulder, CO, which also analyzes samples from the NOAA/ESRL Global Greenhouse Gas Reference Network. 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.

Citation

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

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. https://doi.org/10.3334/ORNLDAAC/1404

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

Data and Resources

Additional Info

Field Value
Identifier DOI: 10.3334/ORNLDAAC/1404
Project(s) CARVE
Institute NOAA Earth System Research Laboratory (ESRL) Global Monitoring Division
Source https://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1404
Publication Date 2016-11-17
Version 1.0
Product Atmospheric gas concentrations (CO2, CH4, CO, H2, N2O, SF6 and other trace gases)
Sensor Programmable Flask Package onboard the CARVE aircraft
Files
  1. carve_Flask_L2_b23_20121001_20160807204049.nc
  2. carve_Flask_L2_b23_20131026_20160807204353.nc
  3. carve_Flask_L2_b23_20141109_20160807204513.nc
  4. carve_Flask_L2_b23_20151112_20160807204557.nc
Variables [Units]
  1. center_lat: Latitude [dec °N]
  2. center_lat_standard_error: latitude standard error [dec °N]
  3. center_lon: longitude [dec °E]
  4. center_lon_standard_error: longitude standard error [dec °E]
  5. height: height of aircraft above ground [m]
  6. height_standard_error: height standard error [m]
  7. geolocation_qc: geolocation status flag [0 = Success, 1 = Error]
  8. time: time of sample collection [seconds since 1980-1-6 0:0:0]
  9. elevation: surface elevation [m]
  10. event_number: NOAA database event number
  11. intake_height: sample intake height [m]
  12. flask_id: sample container ID
  13. sample_method: sample collection method
  14. site_code: sample site code
  15. benz: benzene (C6H6) [ppt]
  16. brfm: bromoform (CHBr3) [ppt]
  17. c2f6: hexafluoroethane (CF3CF3) [ppt]
  18. c2h2: ethyne (acetylene; C2H2) [ppt]
  19. c2h4: ethene (ethylene; C2H4) [ppt]
  20. c2h6: ethane (C2H6) [ppt]
  21. c3h6: propene (propylene; C3H6) [ppt]
  22. c3h8: propane (C3H8) [ppt]
  23. ccl4: carbon tetrachloride (tetrachloromethane; CCl4) [ppt]
  24. cf4: carbon tetraflouride (tetrafluoromethane; CF4) [ppt]
  25. ch2brcl: bromochloromethane (CH2BrCl) [ppt]
  26. ch3i: methyl iodide (CH3I) [ppt]
  27. ch4: methane (CH4) [ppb]
  28. chlf: chloroform (CHCl3) [ppt]
  29. co: carbon monoxide (CO) [ppb]
  30. co2: carbon dioxide (CO2) [ppm]
  31. co2c13: d13C of CO2 [ppm]
  32. co2c14: d14C of CO2 [ppm]
  33. co2o18: d18O of CO2 [ppm]
  34. cs2: carbon disulfide (CS2) [ppt]
  35. dibr: dibromomethane (CH2Br2) [ppt]
  36. dicl: dichloromethane (CH2Cl2) [ppt]
  37. f112: CFC-112 (CCl3CClF2) [ppt]
  38. f113: CFC-113 (CCl2FCClF2) [ppt]
  39. f114: CFC-114 and CFC-114a (ClF2CCF2Cl) [ppt]
  40. f115: CFC-115 (CClF2CF3) [ppt]
  41. f11a: CFC-11 (ion 101; CCl3F) [ppt]
  42. f11b: CFC-11 (ion 103; CCl3F) [ppt]
  43. f124: HCFC-124 (CHClFCF3) [ppt]
  44. f125: HFC-125 (CHF2CF3) [ppt]
  45. f13: CFC-13 (CClF3) [ppt]
  46. f134: HFC-134 (CHF2CHF2) [ppt]
  47. f134a: HFC-134a (CH2FCF3) [ppt]
  48. f141b: HCFC-141b (CH3CCl2F) [ppt]
  49. f142b: HCFC-142b (CH3CF2Cl) [ppt]
  50. f143a: HFC-143a (CH3CF3) [ppt]
  51. f152a: HFC-152a (CH3CHF2) [ppt]
  52. f160: chloroethane (CH3CH2Cl) [ppt]
  53. f227e: HFC-227ea (CF3CHFCF3) [ppt]
  54. f23: HFC-23 (CHF3) [ppt]
  55. f236fa: HFC-236fa (CF3CH2CF3) [ppt]
  56. f32: HFC-32 (CH2F2) [ppt]
  57. f365m: HFC-365mfc (CH3CF2CH2CF3) [ppt]
  58. fc12: CFC-12 (CCl2F2) [ppt]
  59. h1211: bromochlorodifluoromethane (halon 1211; CBrClF2) [ppt]
  60. h1301: bromotrifluoromethane (halon 1301; CF3Br) [ppt]
  61. h2: hydrogen (H2) [ppb]
  62. h2402: dibromotetrafluoroethane (halon 2402; CBrF2CBrF2) [ppt]
  63. hf133a: HCFC-133a (CH2ClCF3) [ppt]
  64. hf21: HCFC-21 (CHCl2F) [ppt]
  65. hf22: HCFC-22 (CHF2Cl) [ppt]
  66. ic4h10: i-butane (i-C4H10) [ppt]
  67. ic5h12: i-pentane (i-C5H12) [ppt]
  68. mcfa: methyl chloroform (ion 97; CH3CCl3) [ppt]
  69. mebr: methyl bromide (CH3Br) [ppt]
  70. mecl: methyl chloride (CH3Cl) [ppt]
  71. n2o: nitrous oxide (N2O) [ppb]
  72. nc4h10: n-butane (n-C4H10) [ppt]
  73. nc5h12: n-pentane (n-C5H12) [ppt]
  74. nc6h14: n-hexane (n-C6H14) [ppt]
  75. nf3: nitrogen trifluoride (NF3) [ppt]
  76. ocs: carbonyl sulfide (COS) [ppt]
  77. p218: perfluoropropane (C3F8) [ppt]
  78. pce: tetrachloroethylene (C2Cl4) [ppt]
  79. sf6_ccgg: sulfur hexafluoride (SF6) [ppt]
  80. sf6_hats: sulfur hexafluoride (SF6) [ppt]
  81. so2f2: sulfuryl fluoride (SO2F2) [ppt]
  82. tce: trichloroethylene (C2HCl3) [ppt]
  83. tol: toluene (C7H8) [ppt]
Region Alaskan and Canadian Arctic
Spatial Reference
Spatial Resolution Point measurements
Spatial Coverage Latitude 35.15 to 71.50, Longitude -167.48 to -106.30
Temporal Coverage 2012 - 2015
Temporal Resolution Flights took place during the growing season (approx. March – November)
Format NetCDF
Is Supplement To
Related to

Dataset extent

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