CARVE column gas from Airborne fourier transform spectrometer, Alaska, 2012-2015

Dupont, F.; Tanguay, F.; Li, M.; Perron, G.; Miller, C.E.; Dinardo, S.J.; and Kurosu, T.P.

This data set provides total vertical column O2, CO2, CH4, CO, and H2O, as well as dry-air columns of CO2, CH4, CO, and H2O from airborne campaigns over the Alaskan and Canadian Arctic for the Carbon in Arctic Reservoirs Vulnerability Experiment (CARVE). The data represent the Level 2 Quick Retrieval (L2QR) data product collected using the CARVE Fourier Transform Spectrometer (FTS). 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 content. 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:

Dupont, F., F. Tanguay, M. Li, G. Perron, C.E. Miller, S.J. Dinardo, and T.P. Kurosu. 2017. CARVE: L2 Column Gas and Uncertainty from Airborne FTS, Alaska, 2012-2015. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1429

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

Kontakt

ORNL DAAC

Metadaten-Zugang

DCAT in RDF/XML-Format

DCAT in Turtle-Format

DCAT in JSON-LD-Format

APGC Dataset Metadata in JSON-Format

Daten und Ressourcen

Zusätzliche Informationen

Feld Wert
Identifikator DOI: 10.3334/ORNLDAAC/1429
Projekt(e) CARVE
Institut Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
Quelle https://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1429
Publikationsdatum 2017-02-02
Version 1.0
Produkt Vertical column O2, CO2, CH4, CO, & H2O
Sensor(en) Fourier Transform Spectrometer
Dateien
  1. Total vertical column and dry air column measurements *.nc files
  2. Companion quick-look plots *.zip files (48 *.png files per zip)
Variablen [Einheiten]
  1. num_times: Number of co-added observations
  2. num_times_1s: Number of 1-second observations
  3. num_coadd: Number of 1s spectra in each co-added observation
  4. num_bands: Number of CARVE FTS bands
  5. num_polarization: Number of polarization observations
  6. num_vertex: Number of vertices in ground-pixel specification
  7. num_instrument: Number of instruments
  8. num_dads: Number of entries in DADS records
  9. num_ch24: Dimension for UTC string time fields ("24")
  10. num_ch08: Dimension for DADS time string ("8")
  11. num_two: Dimension of fitting_window field ("2")
  12. year: Year of co-added observation
  13. julian_day: Julian day of co-added observation
  14. fractional_hour_of_day: Average fractional hour of day of co-added observation
  15. flight_altitude: Average aircraft altitude of co-added observation [meters]
  16. center_latitude: Average latitude of ground pixel center of co-added observation [degrees]
  17. center_longitude: Average longitude of ground pixel center of co-added observation [degrees]
  18. solar_zenith_angle: Average solar zenith angle of co-added observation [degrees]
  19. solar_azimuth_angle: Average solar azimuth angle of co-added observation [degrees]
  20. viewing_zenith_angle: Average viewing zenith angle of co-added observation [degrees]
  21. viewing_azimuth_angle: Average viewing zenith angle of co-added observation [degrees]
  22. surface_elevation: Average terrain height of co-added observation [meters]
  23. time_tai93: Average TAI93 time of co-added observation [seconds]
  24. time_utc: UTC value of the co-added TAI93 time stamp
  25. year_1s: Year of 1s observation
  26. julian_day_1s: Julian day of 1s observation
  27. fractional_hour_of_day_1s: Fractional hour of day of 1s observation
  28. flight_altitude_1s: Aircraft altitude of 1s observation [meters]
  29. center_latitude_1s: Latitude of ground pixel center of 1s observation [degrees]
  30. center_longitude_1s: Longitude of ground pixel center of 1s observation [degrees]
  31. solar_zenith_angle_1s: Solar zenith angle of 1s observation [degrees]
  32. solar_azimuth_angle_1s: Solar azimuth angle of 1s observation [degrees]
  33. viewing_zenith_angle_1s: Viewing zenith angle of 1s observation [degrees]
  34. viewing_azimuth_angle_1s: Viewing azimuth angle of 1s observation [degrees]
  35. surface_elevation_1s: Terrain height of 1s observation [meters]
  36. time_tai93_1s: TAI93 time of 1s observation [seconds]
  37. time_utc_1s: UTC value of the 1s TAI93 time stamp
  38. col_o2_abo2: O2 total column (Band 1) [molec/cm2]
  39. err_col_o2_abo2: O2 total column uncertainty (Band 1) [molec/cm2]
  40. qfl_col_o2_abo2: O2 total column quality flag (Band 1)
  41. col_co2_wco2: CO2 total column (Band 2) [molec/cm2]
  42. dac_co2_wco2: XCO2 column (Band 2) [ppm]
  43. err_col_co2_wco2: CO2 total column uncertainty (Band 2) [molec/cm2]
  44. err_dac_co2_wco2: XCO2 column uncertainty (Band 2) [ppm]
  45. qfl_col_co2_wco2: CO2 total column quality flag (Band 2)
  46. qfl_dac_co2_wco2: XCO2 column quality flag (Band 2)
  47. col_ch4_wco2: CH4 total column (Band 2) [molec/cm2]
  48. dac_ch4_wco2: XCH4 column (Band 2) [ppb]
  49. err_col_ch4_wco2: CH4 total column uncertainty (Band 2) [molec/cm2]
  50. err_dac_ch4_wco2: XCH4 column uncertainty (Band 2) [ppb]
  51. qfl_col_ch4_wco2: CH4 total column quality flag (Band 2)
  52. qfl_dac_ch4_wco2: XCH4 column quality flag (Band 2)
  53. col_h2o_wco2: H2O total column (Band 2) [molec/cm2]
  54. dac_h2o_wco2: XH2O column (Band 2) [ppm]
  55. err_col_h2o_wco2: H2O total column uncertainty (Band 2) [molec/cm2]
  56. err_dac_h2o_wco2: XH2O column uncertainty (Band 2) [ppm]
  57. qfl_col_h2o_wco2: H2O total column quality flag (Band 2)
  58. qfl_dac_h2o_wco2: XH2O column quality flag (Band 2)
  59. col_co2_sco2: CO2 total column (Band 3) [molec/cm2]
  60. dac_co2_sco2: XCO2 column (Band 3) [ppm]
  61. err_col_co2_sco2: CO2 total column uncertainty (Band 3) [molec/cm2]
  62. err_dac_co2_sco2: XCO2 column uncertainty (Band 3) [ppm]
  63. qfl_col_co2_sco2: CO2 total column quality flag (Band 3)
  64. qfl_dac_co2_sco2: XCO2 column quality flag (Band 3)
  65. col_ch4_sco2: CH4 total column (Band 3) [molec/cm2]
  66. dac_ch4_sco2: XCH4 column (Band 3) [ppb]
  67. err_col_ch4_sco2: CH4 total column uncertainty (Band 3) [molec/cm2]
  68. err_dac_ch4_sco2: XCH4 column uncertainty (Band 3) [ppb]
  69. qfl_col_ch4_sco2: CH4 total column quality flag (Band 3)
  70. qfl_dac_ch4_sco2: XCH4 column quality flag (Band 3)
  71. col_h2o_sco2: H2O total column (Band 3) [molec/cm2]
  72. dac_h2o_sco2: XH2O column (Band 3) [ppm]
  73. err_col_h2o_sco2: H2O total column uncertainty (Band 3) [molec/cm2]
  74. err_dac_h2o_sco2: XH2O column uncertainty (Band 3) [ppm]
  75. qfl_col_h2o_sco2: H2O total column quality flag (Band 3)
  76. qfl_dac_h2o_sco2: XH2O column quality flag (Band 3)
  77. col_co_sco2: CO total column (Band 3) [molec/cm2]
  78. dac_co_sco2: XCO column (Band 3) [ppb]
  79. err_col_co_sco2: CO total column uncertainty (Band 3) [molec/cm2]
  80. err_dac_co_sco2: XCO column uncertainty (Band 3) [ppb]
  81. qfl_col_co_sco2: CO total column quality flag (Band 3)
  82. qfl_dac_co_sco2: XCO column quality flag (Band 3)
  83. fitting_window: Fitting window limits [cm-1]
  84. baseline_polynomial: Order of fitted baseline Legendre polynomial
  85. nit: Number of iterations
  86. cl: Continuum level [native]
  87. ct: Continuum tilt
  88. cc: Continuum curvature [0.075% p/p]
  89. fs: Frequency shift [mK]
  90. s_m_g: “Solar minus gas” shift [ppm]
  91. zo: Zero-level offset of continuum [%]
  92. zpres: Surface pressure altitude [Km]
  93. rms_o_cl: RMS nose / cl
  94. am_<gas>: Air mass factor for <gas>
  95. ovc_<gas>: Original vertical column for <gas> [molec/cm2]
  96. vsf_<gas>: Vertical scale factor for <gas>
  97. vsf_<gas>_error: VSF total error for <gas>
  98. gps_alt: Aircraft GPS altitude [m]
  99. gps_lat: Aircraft GPS latitude [deg]
  100. gps_lon: Aircraft GPS longitude [deg]
  101. gps_time: GPS time (8 character UTC time string)
  102. heading: Aircraft heading [deg]
  103. pitch: Aircraft pitch [deg]
  104. roll: Aircraft roll [deg]
Region Alaskan and Canadian Arctic
Räumlicher Bezug
Räumliche Auflösung Point measurements
Räumliche Abdeckung Latitude 58.89 to 71.43, Longitude -131.77 to -167.65
Zeitliche Abdeckung Flights took place during the growing season, 2012 - 2015 (approx. March – November)
Zeitliche Auflösung The instruments were deployed on periodic flights
Format NetCDF, PNG
Is Supplement To
Zusammenhang mit

Ausdehnung des Datensatzes