Dataset
ESA Greenhouse Gases Climate Change Initiative (GHG_cci): GOSAT CO2 Level 2 Data Product (CO2_GOS_SRFP) version 2.3.6, generated with the SRFP (RemoTeC) algorithm
Abstract
Part of the European Space Agency's (ESA) Greenhouse Gases (GHG) Climate Change Initiative (CCI) project and Climate Research Data Package Number 2 (CRDP#2), the XCO2 GOSAT product comprises a level 2, column-averaged dry-air mole fraction (mixing ratio) for carbon dioxide (CO2). The product has been produced using data acquired from the Thermal and Near Infrared Sensor for Carbon Observations (TANSO-FTS) NIR and SWIR spectra, onboard the Japanese Greenhouse gases Observing Satellite (GOSAT). In this case, the RemoTeC Full Physics (SRFP) algorithm, jointly developed at SRON and KIT, has been applied to the TANSO-FTS data. A second product has also been generated from the data using the OCFP (University of Leicester Full Physics) algorithm, and the link to this product's record page can be found in the documentation section.
The data product is stored per day in a single NetCDF file. Retrieval results are provided for the individual GOSAT spatial footprints, no averaging having been applied. The product file contains the key standard products, i.e. the retrieved column averaged dry air mixing ratio XCO2 with bias correction, averaging kernels and quality flags, as well as secondary products specific for the RemoTeC algorithm. For further information, including details of the SRFP algorithm and the TANSO-FTS instrument, please see the associated product user guide (PUG) or the Algorithm Theoretical Basis Document in the documentation section.
Details
| Previous Info: |
No news update for this record
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| Previously used record identifiers: |
No related previous identifiers.
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| Access rules: |
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence(s): https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_ghg_terms_and_conditions.pdf When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. |
| Data lineage: |
Data were processed by the ESA CCI GHG project team and supplied to CEDA as part of the ESA CCI Open Data Portal Project |
| File Format: |
The data are stored in Netcdf format which can be read with standard tools in the common
programming languages (IDL, Matlab, Python etc).
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Related Documents
Process overview
- units: 1e-6
- long_name: 1-sigma uncertainty of the retrieved column-average dry-air mole fraction of atmospheric carbon dioxide
- var_id: xco2_uncertainty
- names: 1-sigma uncertainty of the retrieved column-average dry-air mole fraction of atmospheric carbon dioxide
- units: 1
- long_name: Aerosol optical thickness per retrieval window
- standard_name: optical_thickness_of_atmosphere_layer_due_to_ambient_aerosol
- var_id: optical_thickness_of_atmosphere_layer_due_to_ambient_aerosol
- names: optical_thickness_of_atmosphere_layer_due_to_ambient_aerosol, Aerosol optical thickness per retrieval window
- units: K
- standard_name: air_temperature
- var_id: air_temperature
- long_name: Air temperature at each level
- names: air_temperature, Air temperature at each level
- units: m
- standard_name: altitude
- var_id: altitude
- long_name: Altitude
- names: altitude, Altitude
- units: 1
- long_name: Chi-squared
- var_id: chi2
- names: Chi-squared
- units: m-2
- long_name: Dry airmass per layer
- var_id: dry_airmass_layer
- names: Dry airmass per layer
- units: m-2
- long_name: H2O total column
- var_id: h2o_column
- names: H2O total column
- units: W cm-2
- long_name: Intensity offset in the O2A-band
- var_id: intensity_offset_o2a
- names: Intensity offset in the O2A-band
- units: 1
- long_name: Level 1B name
- var_id: l1b_name
- names: Level 1B name
- units: 1e-6
- var_id: xco2_no_bias_correction
- long_name: Not bias-corrected XCO2 column
- names: Not bias-corrected XCO2 column
- units: m
- long_name: Retrieved aerosol peak height
- var_id: aerosol_central_height
- names: Retrieved aerosol peak height
- units: m-2
- long_name: Retrieved aerosol total column
- var_id: aerosol_total_column
- names: Retrieved aerosol total column
- units: 1
- long_name: Retrieved size parameter of the aerosol distribution
- var_id: aerosol_size
- names: Retrieved size parameter of the aerosol distribution
- units: degrees
- long_name: Sensor zenith angle
- standard_name: sensor_zenith_angle
- var_id: sensor_zenith_angle
- names: Sensor zenith angle, sensor_zenith_angle
- units: degrees
- long_name: Solar zenith angle
- var_id: solar_zenith_angle
- standard_name: solar_zenith_angle
- names: Solar zenith angle, solar_zenith_angle
- units: m
- long_name: Standard deviation of the surface elevation
- var_id: height_stdev
- names: Standard deviation of the surface elevation
- units: 1e-6
- long_name: Statistical uncertainty on the XCO2 total column
- var_id: xco2_statistical_uncertainty
- names: Statistical uncertainty on the XCO2 total column
- units: 1
- long_name: Surface albedo at 1593 nm
- var_id: surface_albedo_1593
- names: Surface albedo at 1593 nm
- units: 1
- long_name: Surface albedo at 1629 nm
- var_id: surface_albedo_1629
- names: Surface albedo at 1629 nm
- units: 1
- long_name: Surface albedo at 2042 nm
- var_id: surface_albedo_2042
- names: Surface albedo at 2042 nm
- units: 1
- long_name: Surface albedo at 758 nm
- var_id: surface_albedo_758
- names: Surface albedo at 758 nm
- units: 1e-6
- long_name: a priori dry-air mole fraction profile of atmospheric carbon dioxide
- var_id: co2_profile_apriori
- names: a priori dry-air mole fraction profile of atmospheric carbon dioxide
- units: 1e-6
- long_name: column-average dry-air mole fraction of atmospheric carbon dioxide
- var_id: xco2
- names: column-average dry-air mole fraction of atmospheric carbon dioxide
- units: 1
- long_name: exposure id
- var_id: idexpo
- names: exposure id
- units: 1
- long_name: flag for land / ocean soundings
- var_id: flag_landtype
- names: flag for land / ocean soundings
- units: 1
- long_name: flag for normal / sunglint soundings
- var_id: flag_sunglint
- names: flag for normal / sunglint soundings
- units: 1
- long_name: gain
- var_id: gain
- names: gain
- units: m s-1
- standard_name: x_wind
- var_id: x_wind
- long_name: grid_eastward_wind
- names: x_wind, grid_eastward_wind
- units: m s-1
- standard_name: y_wind
- var_id: y_wind
- long_name: grid_northward_wind
- names: y_wind, grid_northward_wind
- units: 1
- long_name: normalized column averaging kernel
- var_id: xco2_averaging_kernel
- names: normalized column averaging kernel
- units: hPa
- long_name: pressure levels
- var_id: pressure_levels
- names: pressure levels
- units: 1
- long_name: pressure weights
- var_id: pressure_weights
- names: pressure weights
- units: 1
- long_name: signal to noise ratio
- var_id: signal_to_noise_window
- names: signal to noise ratio
- units: 1
- long_name: xch4_quality flag
- var_id: xco2_quality_flag
- names: xch4_quality flag
Co-ordinate Variables
- units: degrees_north
- standard_name: latitude
- var_id: latitude
- long_name: latitude
- names: latitude
- units: degrees_east
- standard_name: longitude
- var_id: longitude
- long_name: longitude
- names: longitude
- long_name: time
- standard_name: time
- var_id: time
- names: time
Temporal Range
2009-05-31T23:00:00
2013-12-30T00:00:00
Geographic Extent
90.0000° |
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-180.0000° |
180.0000° |
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-90.0000° |