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| Titel |
Preliminary results of the improved GOSAT TANSO-FTS SWIR XCO2 and XCH4 retrievals |
| VerfasserIn |
Y. Yoshida, N. Kikuchi, M. Inoue, I. Morino, O. Uchino, S. Oshchepkov, A. Bril, T. Yokota |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250061737
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| Zusammenfassung |
| Column-averaged dry air mole fractions of carbon dioxide and methane (XCO2 and XCH4)
are retrieved globally from the Short-Wavelength InfraRed (SWIR) spectral data observed
with the Thermal And Near-infrared Sensor for carbon Observation Fourier Transform
Spectrometer (TANSO-FTS) onboard Greenhouse gases Observing SATellite (GOSAT). The
retrieval results are released as the GOSAT TANSO-FTS SWIR L2 product, and its latest
version is V01.xx. This product has biases of -8.85 ppm (-2.3 %) for XCO2 and -20.4
ppb (-1.2 %) for XCH4, by comparison with the XCO2 and XCH4 obtained by
ground-based high-resolution FTS at several Total Carbon Column Observing Network
(TCCON) sites. Several causes of these biases are found and the retrieval algorithm has
been fixing. Although some bias causes are still remained, the tentative results
show small biases (~-3 ppm for XCO2 and ~-10 ppb for XCH4). Improvement
study has been ongoing, and the latest results will be shown in the presentation. |
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