Dataset
ESA Greenhouse Gases Climate Change Initiative (GHG_cci): Column-averaged methane from Sentinel-5P, generated with the WFM-DOAS algorithm, version 1.2
Latest Data Update: 2020-02-27
Status: Superseded
Online Status: ONLINE
Publication State: Citable
Publication Date: 2020-03-31
DOI Publication Date: 2020-04-01
Download Stats: last 12 months
Dataset Size: 375 Files | 16GB
This dataset has been superseded. See Latest Version here
Abstract
This product is the column-average dry-air mole fraction of atmospheric methane, denoted XCH4. It has been retrieved from radiance measurements from the TROPOspheric Monitoring Instrument (TROPOMI) on the Sentinel-5 Precursor satellite in the 2.3 µm spectral range of the solar spectral range, using the Weighting Function Modified Differential Optical Absorption Spectroscopy (WFM-DOAS or WFMD) retrieval algorithm. This dataset is also referred to as CH4_S5P_WFMD.
The WFMD algorithm is based on iteratively fitting a simulated radiance spectrum to the measured spectrum using a least-squares method. The algorithm is very fast as it is based on a radiative transfer model based look-up table scheme. The product is limited to cloud-free scenes on the Earth's day side.
This data was produced as part of the European Space Agency's (ESA) Greenhouse Gases (GHG) Climate Change Initiative (CCI) project.
Citable as: Schneising, O.; Buchwitz, M.; Reuter, M.; Bovensmann, H.; Burrows, J.P. (2020): ESA Greenhouse Gases Climate Change Initiative (GHG_cci): Column-averaged methane from Sentinel-5P, generated with the WFM-DOAS algorithm, version 1.2. Centre for Environmental Data Analysis, 01 April 2020. doi:10.5285/3534bbf43fa14e40bc61944eaf664511. https://dx.doi.org/10.5285/3534bbf43fa14e40bc61944eaf664511
Abbreviation: Not defined
Keywords: ESA, CCI, satellite, Sentinel-5 Precursor, TROPOMI, atmosphere, methane, carbon monoxide
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: 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. |
| Data Quality: |
Data are as given by the data provider, no quality control has been performed by the Centre for Environmental Data Analysis (CEDA)
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| File Format: |
Data are netCDF formatted.
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Process overview
- units: 1e-9
- long_name: 1-sigma uncertainty of the retrieved column-averaged dry air mole fraction of atmospheric carbon monoxide
- var_id: xco_uncertainty
- names: 1-sigma uncertainty of the retrieved column-averaged dry air mole fraction of atmospheric carbon monoxide
- units: 1e-9
- var_id: xch4_uncertainty
- long_name: 1-sigma uncertainty of the retrieved column-averaged dry air mole fraction of atmospheric methane
- names: 1-sigma uncertainty of the retrieved column-averaged dry air mole fraction of atmospheric methane
- units: g cm-2
- long_name: 1-sigma uncertainty of the retrieved vertical column of atmospheric water vapour
- var_id: h2o_column_uncertainty
- names: 1-sigma uncertainty of the retrieved vertical column of atmospheric water vapour
- units: 1e-9
- long_name: a priori dry air mole fraction profile of atmospheric carbon monoxide
- var_id: co_profile_apriori
- names: a priori dry air mole fraction profile of atmospheric carbon monoxide
- units: 1e-9
- var_id: ch4_profile_apriori
- long_name: a priori dry air mole fraction profile of atmospheric methane
- names: a priori dry air mole fraction profile of atmospheric methane
- units: 1
- long_name: across track dimension index
- var_id: ground_pixel
- names: across track dimension index
- units: 1
- long_name: along track dimension index
- var_id: scanline
- names: along track dimension index
- units: m
- standard_name: altitude
- var_id: altitude
- long_name: altitude
- names: altitude
- units: 1
- long_name: apparent surface albedo
- var_id: apparent_albedo
- names: apparent surface albedo
- units: degree
- long_name: azimuth difference
- var_id: azimuth_difference
- names: azimuth difference
- units: 1
- long_name: cloud parameter from strong water vapour absorption
- var_id: cloud_parameter
- names: cloud parameter from strong water vapour absorption
- units: 1e-9
- long_name: column-averaged dry air mole fraction of atmospheric carbon monoxide
- var_id: xco
- names: column-averaged dry air mole fraction of atmospheric carbon monoxide
- units: 1e-9
- var_id: xch4
- long_name: column-averaged dry air mole fraction of atmospheric methane
- standard_name: dry_atmosphere_mole_fraction_of_methane
- names: column-averaged dry air mole fraction of atmospheric methane, dry_atmosphere_mole_fraction_of_methane
- units: 1e-2
- long_name: land fraction
- var_id: land_fraction
- names: land fraction
- units: degree_north
- var_id: latitude_corners
- long_name: latitude_corners
- names: latitude_corners
- units: degree_east
- var_id: longitude_corners
- long_name: longitude_corners
- names: longitude_corners
- units: 1
- long_name: orbit number
- var_id: orbit_number
- names: orbit number
- units: hPa
- long_name: pressure levels
- var_id: pressure_levels
- names: pressure levels
- units: 1
- long_name: pressure weight
- var_id: pressure_weight
- names: pressure weight
- long_name: quality flag
- var_id: quality_flag
- names: quality flag
- units: degree
- standard_name: sensor_zenith_angle
- var_id: sensor_zenith_angle
- long_name: sensor_zenith_angle
- names: sensor_zenith_angle, sensor zenith angle
- units: degree
- var_id: solar_zenith_angle
- standard_name: solar_zenith_angle
- long_name: solar_zenith_angle
- names: solar zenith angle, solar_zenith_angle
- var_id: h2o_column
- units: g cm-2
- long_name: vertical column of water vapour
- names: vertical column of water vapour
- units: 1
- var_id: xch4_averaging_kernel
- long_name: xch4 averaging kernel
- names: xch4 averaging kernel
- units: 1
- long_name: xco averaging kernel
- var_id: xco_averaging_kernel
- names: xco averaging kernel
Co-ordinate Variables
- units: degree_north
- standard_name: latitude
- var_id: latitude
- long_name: latitude
- names: latitude
- units: degree_east
- standard_name: longitude
- var_id: longitude
- long_name: longitude
- names: longitude
- long_name: time
- standard_name: time
- var_id: time
- names: time
Coverage
Temporal Range
Start time:
2017-11-10T00:00:00
End time:
2018-12-31T23:59:59
Geographic Extent
90.0000° |
||
-180.0000° |
180.0000° |
|
-90.0000° |
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