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Preliminary validation of column-averaged volume mixing ratios of carbon dioxide and methane retrieved from GOSAT short-wavelength infrared spectra

Journal Article


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Abstract


  • Column-averaged volume mixing ratios of carbon dioxide and methane retrieved from

    the Greenhouse gases Observing SATellite (GOSAT) Short-Wavelength InfraRed observation

    (GOSAT SWIR XCO2 and XCH4) were compared with the reference data ob-

    5 tained by ground-based high-resolution Fourier Transform Spectrometers (g-b FTSs)

    participating in the Total Carbon Column Observing Network (TCCON).

    Through calibrations of g-b FTSs with airborne in-situ measurements, the uncertainty

    of XCO2 and XCH4 associated with the g-b FTS was determined to be 0.8 ppm

    (0.2%) and 4 ppb (0.2%), respectively. The GOSAT products are validated with

    10 these calibrated g-b FTS data. Preliminary results are as follows: The GOSAT SWIR

    XCO2 and XCH4 (Version 01.xx) are biased low by 8.85±4.75 ppm (2.3±1.2%) and

    20.4±18.9 ppb (1.2±1.1%), respectively. The precision of the GOSAT SWIR XCO2

    and XCH4 is considered to be about 1%. The latitudinal distributions of zonal means of

    the GOSAT SWIR XCO2 and XCH4 show similar features to those of the g-b FTS data.

UOW Authors


  •   Morino, Isamu (external author)
  •   Uchino, Osamu (external author)
  •   Inoue, M (external author)
  •   Yoshida, Yukio (external author)
  •   Yokota, Tatsuya (external author)
  •   Wennberg, Paul O. (external author)
  •   Toon, Geoffrey C. (external author)
  •   Wunch, Debra (external author)
  •   Roehl, Coleen M. (external author)
  •   Notholt, Justus (external author)
  •   Warneke, Thorsten (external author)
  •   Messerschmidt, Janina (external author)
  •   Griffith, David
  •   Deutscher, Nicholas
  •   Sherlock, Vanessa (external author)
  •   Connor, Brian J. (external author)
  •   Robinson, John (external author)
  •   Sussmann, Ralf (external author)
  •   Rettinger, Markus (external author)

Publication Date


  • 2010

Citation


  • Morino, I., Uchino, O., Inoue, M., Yoshida, Y., Yokota, T., Wennberg, P. O., Toon, G., Wunch, D., Roehl, C. M., Notholt, J., Warneke, T., Messerschmidt, J., Griffith, D. W., Deutscher, N. M., Sherlock, V., Connor, B., Robinson, J., Sussmann, R. & Rettinger, M. (2010). Preliminary validation of column-averaged volume mixing ratios of carbon dioxide and methane retrieved from GOSAT short-wavelength infrared spectra. Atmospheric Measurement Techniques Discussions, 3 5613-5643.

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1780&context=scipapers

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/741

Number Of Pages


  • 30

Start Page


  • 5613

End Page


  • 5643

Volume


  • 3

Abstract


  • Column-averaged volume mixing ratios of carbon dioxide and methane retrieved from

    the Greenhouse gases Observing SATellite (GOSAT) Short-Wavelength InfraRed observation

    (GOSAT SWIR XCO2 and XCH4) were compared with the reference data ob-

    5 tained by ground-based high-resolution Fourier Transform Spectrometers (g-b FTSs)

    participating in the Total Carbon Column Observing Network (TCCON).

    Through calibrations of g-b FTSs with airborne in-situ measurements, the uncertainty

    of XCO2 and XCH4 associated with the g-b FTS was determined to be 0.8 ppm

    (0.2%) and 4 ppb (0.2%), respectively. The GOSAT products are validated with

    10 these calibrated g-b FTS data. Preliminary results are as follows: The GOSAT SWIR

    XCO2 and XCH4 (Version 01.xx) are biased low by 8.85±4.75 ppm (2.3±1.2%) and

    20.4±18.9 ppb (1.2±1.1%), respectively. The precision of the GOSAT SWIR XCO2

    and XCH4 is considered to be about 1%. The latitudinal distributions of zonal means of

    the GOSAT SWIR XCO2 and XCH4 show similar features to those of the g-b FTS data.

UOW Authors


  •   Morino, Isamu (external author)
  •   Uchino, Osamu (external author)
  •   Inoue, M (external author)
  •   Yoshida, Yukio (external author)
  •   Yokota, Tatsuya (external author)
  •   Wennberg, Paul O. (external author)
  •   Toon, Geoffrey C. (external author)
  •   Wunch, Debra (external author)
  •   Roehl, Coleen M. (external author)
  •   Notholt, Justus (external author)
  •   Warneke, Thorsten (external author)
  •   Messerschmidt, Janina (external author)
  •   Griffith, David
  •   Deutscher, Nicholas
  •   Sherlock, Vanessa (external author)
  •   Connor, Brian J. (external author)
  •   Robinson, John (external author)
  •   Sussmann, Ralf (external author)
  •   Rettinger, Markus (external author)

Publication Date


  • 2010

Citation


  • Morino, I., Uchino, O., Inoue, M., Yoshida, Y., Yokota, T., Wennberg, P. O., Toon, G., Wunch, D., Roehl, C. M., Notholt, J., Warneke, T., Messerschmidt, J., Griffith, D. W., Deutscher, N. M., Sherlock, V., Connor, B., Robinson, J., Sussmann, R. & Rettinger, M. (2010). Preliminary validation of column-averaged volume mixing ratios of carbon dioxide and methane retrieved from GOSAT short-wavelength infrared spectra. Atmospheric Measurement Techniques Discussions, 3 5613-5643.

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1780&context=scipapers

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/741

Number Of Pages


  • 30

Start Page


  • 5613

End Page


  • 5643

Volume


  • 3