Variables
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attributes
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long_name
A priori XCO2 Value
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missing_value
-999999.0000
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fullnamepath
/xco2_apriori
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attributes
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-
-
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comment
1-Based Index of L2 File for each sounding
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-
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attributes
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long_name
Pressure_Levels
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missing_value
-999999.0000
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comment
Pressure at each level; Defined on layer boundaries. These are oriented space-to-surface, so the first element defines the TOA, the last element defines the surface.
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fullnamepath
/pressure_levels
xco2
[sounding_id=0..108]
(Type is Float32)
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attributes
-
-
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missing_value
-999999.0000
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comment
Column-averaged dry-air mole fraction of CO2 (includes bias correction)
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time
[sounding_id=0..108]
(Type is Float64)
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attributes
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units
seconds since 1970-01-01 00:00:00
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missing_value
-999999.00000000000
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-
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attributes
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long_name
Pressure Weighting Function
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missing_value
-999999.0000
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comment
Pressure weighting function for each level; Defined on layer boundaries. These are oriented space-to-surface, so the first element defines the TOA, the last element defines the surface.
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fullnamepath
/pressure_weight
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attributes
-
-
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missing_value
-999999.0000
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comment
Band 3 / Band 2 Ratio of retrieved Single-band XCO2 using IMAP-DOAS algorithm
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fullnamepath
/Preprocessors/co2_ratio
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attributes
-
-
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missing_value
-999999.0000
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comment
Band 3 / Band 2 Ratio of retrieved Single-band XH2O using IMAP-DOAS algorithm
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fullnamepath
/Preprocessors/h2o_ratio
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attributes
-
-
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missing_value
-999999.0000
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comment
XCO2 from Strong CO2 Band only, IMAP-DOAS algorithm
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fullnamepath
/Preprocessors/xco2_strong_idp
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attributes
-
-
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missing_value
-999999.0000
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comment
XCO2 from Weak CO2 Band only, IMAP-DOAS algorithm
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-
fullnamepath
/Preprocessors/xco2_weak_idp
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attributes
-
-
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missing_value
-999999.0000
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comment
O2 Ratio (nonscattering retrieval) from IMAP-DOAS algorithm, GOSAT P Polarization
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fullnamepath
/Preprocessors/o2_ratio_p_idp
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attributes
-
-
long_name
delta_surface_pressure_abp
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missing_value
-999999.0000
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comment
Retrieved-Prior Pressure from the fast O2A-band only preprocessor retrieval
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fullnamepath
/Preprocessors/dp_abp
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attributes
-
-
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missing_value
-999999.0000
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comment
O2 Ratio (nonscattering retrieval) from IMAP-DOAS algorithm, GOSAT S Polarization
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fullnamepath
/Preprocessors/o2_ratio_s_idp
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attributes
-
-
long_name
sounding_solar_zenith
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missing_value
-999999.0000
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comment
solar zenith angle at the time of the measurement
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origname
solar_zenith_angle
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fullnamepath
/solar_zenith_angle
longitude
[sounding_id=0..108]
(Type is Float32)
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attributes
-
-
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missing_value
-999999.0000
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comment
center longitude of the measurement
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latitude
[sounding_id=0..108]
(Type is Float32)
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attributes
-
-
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missing_value
-999999.0000
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comment
center latitude of the measurement
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-
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attributes
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-
long_name
sounding_zenith
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missing_value
-999999.0000
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comment
zenith angle of the satellite at the time of the measurement
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origname
sensor_zenith_angle
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fullnamepath
/sensor_zenith_angle
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attributes
-
-
long_name
XCO2_Quality_Flag
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-
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origname
xco2_quality_flag
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fullnamepath
/xco2_quality_flag
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attributes
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long_name
XCO2 Column Averaging Kernel
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missing_value
-999999.0000
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comment
Normalized XCO2 averaging kernel; Defined on layer boundaries. These are oriented space-to-surface, so the first element defines the TOA, the last element defines the surface.
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origname
xco2_averaging_kernel
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fullnamepath
/xco2_averaging_kernel
date
[sounding_id=0..108]
[epoch_dimension=0..5]
(Type is Int16)
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attributes
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long_name
Observation date and time matching sounding_id
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comment
Year, month (1-12), day (1-31), hour (0-23), minute (0-59), second (0-59).
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-
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attributes
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-
long_name
Water Cloud Optical Depth
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missing_value
-999999.0000
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comment
Retrieved Water Cloud Optical Depth at 0.755 microns
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-
fullnamepath
/Retrieval/aod_water
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attributes
-
-
long_name
Signal_band3/Signal_band2
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missing_value
-999999.0000
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comment
Ratio of Band 3 to Band 2 signal level
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-
fullnamepath
/Retrieval/s32
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attributes
-
-
long_name
Dust Aerosol Optical Depth
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missing_value
-999999.0000
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comment
Retrieved Dust Aerosol Optical Depth at 0.755 microns
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-
fullnamepath
/Retrieval/aod_dust
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attributes
-
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long_name
Retrieved Band 3 albedo slope
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missing_value
-999999.0000
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fullnamepath
/Retrieval/albedo_slope_3
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attributes
-
-
long_name
Black Carbon Optical Depth
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missing_value
-999999.0000
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comment
Retrieved Black Carbon Optical Depth at 0.755 microns
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-
fullnamepath
/Retrieval/aod_bc
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attributes
-
-
long_name
Sea Salt Optical Depth
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missing_value
-999999.0000
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comment
Retrieved Sea Salt Carbon Optical Depth at 0.755 microns
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-
fullnamepath
/Retrieval/aod_seasalt
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attributes
-
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long_name
Prior Surface Wind Speed
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missing_value
-999999.0000
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comment
Surface wind speed retrieved by the Level-2 retrieval
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origname
windspeed_apriori
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fullnamepath
/Retrieval/windspeed_apriori
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attributes
-
-
long_name
Total Column Water Vapor A Priori
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missing_value
-999999.0000
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comment
Prior TCWV (from ECMWF prior profile)
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fullnamepath
/Retrieval/tcwv_apriori
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attributes
-
-
long_name
Change in CO2 vertical gradient (surface minus level 13), retrieved-apriori
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missing_value
-999999.0000
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comment
level 13 is at P/Psurf=0.631579
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fullnamepath
/Retrieval/co2_grad_del
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attributes
-
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long_name
Retrieved Fluorescence at 757 nm
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missing_value
-999999.0000
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comment
Simultaneous Fluorescence retrieval (at 757 nm) by L2 code; note this is different than the dedicated retrieval using only solar lines
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-
fullnamepath
/Retrieval/fs
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attributes
-
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long_name
Prior Surface Pressure
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missing_value
-999999.0000
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comment
Prior surface pressure used in the retrieval, as determined by ECMWF short-term (0-9 hour) forecast
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fullnamepath
/Retrieval/psurf_apriori
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attributes
-
-
long_name
SigmaB_Coefficient
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missing_value
-999999.0000
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comment
Multiply Psurf by these values to get the pressure layer boundaries (= pressure levels)
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fullnamepath
/Retrieval/SigmaB
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attributes
-
-
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missing_value
-999999.0000
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comment
Retrieved Band 2 (1.6 micron) surface albedo
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fullnamepath
/Retrieval/albedo_2
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attributes
-
-
long_name
Temperature_at_700hPa
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missing_value
-999999.0000
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comment
Temperature at 700 hPa (from ECMWF)
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fullnamepath
/Retrieval/T700
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attributes
-
-
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missing_value
-999999.0000
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comment
Retrieved Band 1 (0.76 micron) surface albedo
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fullnamepath
/Retrieval/albedo_1
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attributes
-
-
long_name
Reduced Chi-Squared of L2 Fit per band
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missing_value
-999999.0000
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comment
Reduced Chi-Squared for each band (1,2,3) of L2 spectral fit
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origname
reduced_chi_squared_per_band
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fullnamepath
/Retrieval/reduced_chi_squared_per_band
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attributes
-
-
long_name
Total Column Water Vapor
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missing_value
-999999.0000
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comment
Retrieved TCWV obtained by multiplying retrieved h2o_scale factor to prior (ECMWF) TCWV
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fullnamepath
/Retrieval/tcwv
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attributes
-
-
long_name
Total Column Water Vapor Uncertainty
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missing_value
-999999.0000
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comment
Retrieved TCWV Posterior Uncertainty
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origname
tcwv_uncertainty
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fullnamepath
/Retrieval/tcwv_uncertainty
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attributes
-
-
long_name
Retrieved Band 2 albedo slope
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missing_value
-999999.0000
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-
fullnamepath
/Retrieval/albedo_slope_2
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attributes
-
-
long_name
Retrieved Offset to Prior Temperature Profile in Kelvin
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missing_value
-999999.0000
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-
fullnamepath
/Retrieval/deltaT
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attributes
-
units
GOSAT radiance units * 1e7
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long_name
Band 1 Radiance Offset
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missing_value
-999999.0000
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comment
Retrieved Band 1 (0.76 micron) radiance offset
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fullnamepath
/Retrieval/b1offset
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attributes
-
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long_name
Retrieved scale factor to Prior Water Vapor Profile
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missing_value
-999999.0000
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fullnamepath
/Retrieval/h2o_scale
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attributes
-
-
long_name
log(dust+water+salt)
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missing_value
-999999.0000
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comment
Retrieved max(log(aod_dust+aod_sulfate+aod_ss),-5), at 0.755 microns
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fullnamepath
/Retrieval/logDWS
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attributes
-
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long_name
Delta Psurf from L2
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missing_value
-999999.0000
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comment
Retrieved-Prior Pressure from the L2 Full-Physics retrieval
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-
fullnamepath
/Retrieval/dp
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attributes
-
-
long_name
Levenberg-Marquardt Parameter
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missing_value
-999999.0000
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comment
Value of Levenberg-Marquardt Parameter on final iteration
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fullnamepath
/Retrieval/lm_param
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attributes
-
-
long_name
Retrieved Surface Wind Speed
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missing_value
-999999.0000
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comment
Surface wind speed retrieved by the Level-2 retrieval
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fullnamepath
/Retrieval/windspeed
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attributes
-
-
long_name
Ice Cloud Optical Depth
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missing_value
-999999.0000
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comment
Retrieved Ice Cloud Optical Depth at 0.755 microns
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fullnamepath
/Retrieval/aod_ice
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attributes
-
-
-
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comment
No. of iterations used in retrieval
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-
fullnamepath
/Retrieval/iterations
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attributes
-
-
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missing_value
-999999.0000
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comment
Retrieved Band 1 (2.04 micron) surface albedo
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fullnamepath
/Retrieval/albedo_3
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attributes
-
-
long_name
Sulfate Aerosol Optical Depth
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missing_value
-999999.0000
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comment
Retrieved Sulfate Aerosol Optical Depth at 0.755 microns
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fullnamepath
/Retrieval/aod_sulfate
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attributes
-
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long_name
Retrieved Band 1 albedo slope
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missing_value
-999999.0000
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fullnamepath
/Retrieval/albedo_slope_1
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attributes
-
-
long_name
Strong_CO2 SNR Clipped
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missing_value
-999999.0000
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comment
Band 3 SNR clipped at 600
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fullnamepath
/Retrieval/snr_strong_clip
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attributes
-
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long_name
diverging_steps
-
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comment
No. of diverging steps taken in retrieval
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fullnamepath
/Retrieval/diverging_steps
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attributes
-
-
long_name
Retrieved CO2 vertical gradient (surface minus level 13) in ppm
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missing_value
-999999.0000
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comment
level 13 is at P/Psurf=0.631579
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fullnamepath
/Retrieval/grad_co2
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attributes
-
-
-
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comment
Surface type used in the retrieval: 0=ocean and corresponds to a Coxmunk+Lambertian surface; 1=land and corresponds to a pure Lambertian surface
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fullnamepath
/Retrieval/surface_type
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attributes
-
-
long_name
Signal_band3/Signal_band1
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missing_value
-999999.0000
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comment
Ratio of Band 3 to Band 1 signal level
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-
fullnamepath
/Retrieval/s31
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attributes
-
-
long_name
Retrieved Surface Pressure
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missing_value
-999999.0000
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comment
Surface pressure retrieved by the Level-2 retrieval
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fullnamepath
/Retrieval/psurf
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attributes
-
-
long_name
Total Cloud+Aerosol Optical Depth
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missing_value
-999999.0000
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comment
Retrieved Total Cloud+Aerosol Optical Depth at 0.755 microns
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fullnamepath
/Retrieval/aod_total
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attributes
-
-
long_name
Organic Carbon Optical Depth
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missing_value
-999999.0000
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comment
Retrieved Organic Carbon Optical Depth at 0.755 microns
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fullnamepath
/Retrieval/aod_oc
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attributes
-
-
long_name
Raw value of Retrieved XCO2
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missing_value
-999999.0000
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fullnamepath
/Retrieval/xco2_raw
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attributes
-
-
long_name
sounding_glint_angle
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missing_value
-999999.0000
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comment
Angular distance from viewing along the perfect glint direction
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fullnamepath
/Sounding/glint_angle
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attributes
-
units
degrees East of North
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long_name
sounding_azimuth
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missing_value
-999999.0000
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comment
azimuth angle of the satellite at the time of the measurement
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origname
sensor_azimuth_angle
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fullnamepath
/Sounding/sensor_azimuth_angle
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attributes
-
-
-
missing_value
-999999.0000
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comment
O2A-Band Continuum Signal-to-Noise Ratio
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-
fullnamepath
/Sounding/snr_o2
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attributes
-
-
long_name
relative_airmass
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missing_value
-999999.0000
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comment
Airmass, computed as 1/cos(solar_zenith_angle) + 1/cos(sensor_zenith_angle)
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fullnamepath
/Sounding/airmass
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attributes
-
units
degrees East of North
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long_name
sounding_solar_azimuth
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missing_value
-999999.0000
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comment
solar azimuth angle at the time of the measurement
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origname
solar_azimuth_angle
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fullnamepath
/Sounding/solar_azimuth_angle
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attributes
-
-
long_name
GOSAT orbit path number
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comment
GOSAT fixed orbit path number ranging from 1-45
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-
fullnamepath
/Sounding/path
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attributes
-
-
long_name
snr_weak_CO2_L1b
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missing_value
-999999.0000
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comment
Weak CO2-Band Continuum Signal-to-Noise Ratio
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-
fullnamepath
/Sounding/snr_weak_co2
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attributes
-
-
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missing_value
-999999.0000
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comment
Surface Altitude in meters above sea level
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-
fullnamepath
/Sounding/altitude
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attributes
-
-
long_name
JAXA L1B Processing Version
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-
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fullnamepath
/Sounding/l1b_type
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attributes
-
-
long_name
snr_strong_CO2_L1b
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missing_value
-999999.0000
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comment
Strong CO2-Band Continuum Signal-to-Noise Ratio
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-
fullnamepath
/Sounding/snr_strong_co2
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attributes
-
-
-
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comment
Fraction of the footprint that contains land in percent
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-
fullnamepath
/Sounding/land_fraction
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attributes
-
-
-
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comment
TANSO-FTS gain mode: H is the high-gain mode (used over most of the planet); M is the medium gain mode (used over very bright surfaces)
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-
fullnamepath
/Sounding/gain
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attributes
-
-
long_name
XCO2_Posterior_Error
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missing_value
-999999.0000
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origname
xco2_uncertainty
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fullnamepath
/xco2_uncertainty
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attributes
-
-
-
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comment
Data Quality Indicator.0=Most likely good; 19=least likely good
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-
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attributes
-
-
long_name
CO2 Apriori Profile
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missing_value
-999999.0000
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comment
Prior CO2 Prior assumed by L2 code; Defined on layer boundaries. These are oriented space-to-surface, so the first element defines the TOA, the last element defines the surface.
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origname
co2_profile_apriori
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fullnamepath
/co2_profile_apriori
bands
[bands=0..2]
(Type is Int16)
no attributes
levels
[levels=0..19]
(Type is Int16)
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attributes
-
-
-
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comment
Source L2 File Names for these soundings
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-
fullnamepath
/source_files
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