TY - GEN
T1 - Seasonal variations of greenhouse gas column-averaged dry air mole fractions retrieved from SWIR spectra of GOSAT TANSO-FTS
AU - Eguchi, Nawo
AU - Yoshida, Yukio
AU - Morino, Isamu
AU - Kikuchi, Nobuyuki
AU - Saeki, Tazu
AU - Inoue, Makoto
AU - Uchino, Osamu
AU - Maksyutov, Shamil
AU - Watanabe, Hiroshi
AU - Yokota, Tatsuya
PY - 2011
Y1 - 2011
N2 - GOSAT has monitored column-averaged dry air mole fractions of CO 2 and CH4 (XCO2 and XCH4, respectively) for cloud-free scenes more than 2 years. The present paper shows the occurrence of the cloud-free data and the seasonal and inter-annual variation of XCO 2 and XCH4. The seasonal variation of XCO2 in the boreal hemisphere consists with the previous knowledge from ground-based observation and atmospheric transport model but the relatively small seasonal amplitude of column amount. The globally averaged XCO2 suggests that the CO2 concentrations in the atmosphere have increased since 2009 with approximately 2 ppmv. The high temporal variations of XCH4 are found over the northern subtropics, especially the eastern Asia, however, where the cloud covers frequently during the rainy season. To more precise analysis, it is necessary to accumulate the effective data for analysis or to validate the effect of cloud on retrieved data.
AB - GOSAT has monitored column-averaged dry air mole fractions of CO 2 and CH4 (XCO2 and XCH4, respectively) for cloud-free scenes more than 2 years. The present paper shows the occurrence of the cloud-free data and the seasonal and inter-annual variation of XCO 2 and XCH4. The seasonal variation of XCO2 in the boreal hemisphere consists with the previous knowledge from ground-based observation and atmospheric transport model but the relatively small seasonal amplitude of column amount. The globally averaged XCO2 suggests that the CO2 concentrations in the atmosphere have increased since 2009 with approximately 2 ppmv. The high temporal variations of XCH4 are found over the northern subtropics, especially the eastern Asia, however, where the cloud covers frequently during the rainy season. To more precise analysis, it is necessary to accumulate the effective data for analysis or to validate the effect of cloud on retrieved data.
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U2 - 10.1109/IGARSS.2011.6049986
DO - 10.1109/IGARSS.2011.6049986
M3 - Conference contribution
AN - SCOPUS:80955136430
SN - 9781457710056
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 3542
EP - 3545
BT - 2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011 - Proceedings
T2 - 2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011
Y2 - 24 July 2011 through 29 July 2011
ER -