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Large XCH4 anomaly in summer 2013 over Northeast Asia observed by GOSAT
Atmospheric Chemistry and Physics Discussions
Extremely high levels of column-averaged dry-air mole fractions of atmospheric methane (XCH<sub>4</sub>) were detected in August and September 2013 over Northeast Asia (~ 20 ppb above the averaged summertime XCH<sub>4</sub> over 2009–2012, after removing a long-term trend), as being retrieved 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 Gasesdoi:10.5194/acpd-15-24995-2015 fatcat:rn35ofvl4bac5op3hn426argyi