TANSO-FTS-2 simultaneously observes both reflected shortwave-infrared (SWIR) solar light and thermal infrared (TIR) emissions with a single FTS-mechanism. We use an entire TIR band to add only one piece of information in the troposphere. Assuming the CO2 and CH4 partial column-averaged dry air mole fractions of the two individual layers of LT and UT are constant, we retrieve the difference between the partial column-averaged dry mole fractions of the lower troposphere (LT) and upper troposphere (UT) by combining TIR and SWIR spectra data simultaneously, constraining accurate total column density. The pressure-height ranges of LT and UT are taken as 1 -0.6 and 0.6 -0.2 of the retrieved surface pressure, respectively.
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yyyy/mm/dd and hh:mm:ss :
Observation time defined as the start time of the exposure.
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XCO2_apr:
A priori of the column averaged dry air mole fraction of CO2 calculated from CarbonTracker.
units = ppmv
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XCO2_tot:
Retrieved column averaged dry air mole fraction of CO2.
units = ppmv
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XCO2_low:
Retrieved dry air mole fraction of CO2 in the lower troposphere defined as the partial layer from Psrf_ret up to 0.6 Psrf_ret.
units = ppmv
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XCO2_upp:
Retrieved dry air mole fraction of CO2 in the upper troposphere defined as the partial layer from 0.6 Psrf_ret up to 0.2 Psrf_ret.
units = ppmv
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XCH4_apr
A priori of the column averaged dry air mole fraction of CH4 calculated from CarbonTracker-CH4.
units = ppmv
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XCH4_tot
Retrieved column averaged dry air mole fraction of CH4.
units = ppmv
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XCH4_low
Retrieved dry air mole fraction of CH4 in the lower troposphere defined as the partial layer from Psrf_ret up to 0.6 Psrf_ret.
units = ppmv
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XCH4_upp
Retrieved dry air mole fraction of CH4 in the upper troposphere defined as the partial layer from 0.6 Psrf_ret up to 0.2 Psrf_ret.
units = ppmv
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XCO_apr:
A priori of the column averaged dry air mole fraction of CO calculated from CarbonTracker.
units = ppmv
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XCO_tot:
Retrieved column averaged dry air mole fraction of CO.
units = ppmv
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Psrf_apr
A priori of the surface pressure calculated from NCEP Reanalysis 2.
units = hPa
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Psrf_ret
Retrieved surface pressure.
units = ppmv
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AOT_076
Retrieved aerosol optical thickness at 0.76 µm.
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AOT_160
Retrieved aerosol optical thickness at 1.6 µm.
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AOT_206
Retrieved aerosol optical thickness at 2.06 µm.
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SIF
Retrieved solar-induces fluorescence which is assumed to be constant in the O2 A band.
units = 10-9 W/cm2/sr/cm-1
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Cloud
Cloud index from onboard camera images.
0 = clear
1 = cloudy
-1 = not available
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latitude and longitude
Observation location.
units = degree
GHG Long term trend viewer was developed by JAXA/EORC. We would like to thank NIES GOSAT project members, and JAXA GOSAT project members.