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Dataset

 

ESA Greenhouse Gases Climate Change Initiative (GHG_cci): Column-averaged CO2 from SCIAMACHY generated with the BESD algorithm (CO2_SCI_BESD), v02.01.02

Update Frequency: Not Planned
Latest Data Update: 2017-07-20
Status: Completed
Online Status: ONLINE
Publication State: Published
Publication Date: 2018-03-19
Download Stats: last 12 months
Dataset Size: 3.11K Files | 767MB
Abstract

The CO2_SCI_BESD dataset comprises level 2, column-averaged dry-air mole fractions (mixing ratios) of carbon dioxide (CO2) from the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) instrument on board the European Space Agency's (ESA's) environmental research satellite ENVISAT. It has been produced using the Bremen Optimal Estimation DOAS (BESD) algorithm, by the ESA Greenhouse Gases Climate Change Initiative (GHG_cci) project.

The Bremen Optimal Estimation DOAS (BESD) algorithm is a full physics algorithm which uses measurements in the O2-A absorption band to retrieve scattering information about clouds and aerosols. This is the Greenhouse Gases CCI baseline algorithm for deriving SCIAMACHY XCO2 data. A product has also been generated from the SCIAMACHY data using an alternative algorithm: the WFMD algorithm. It is advised that users who aren't sure whether to use the baseline or alternative product use this BESD product. For more information regarding the differences between baseline and alternative algorithms please see the Greenhouse Gases CCI data products webpage.

For further information on the product, including details of the BESD algorithm and the SCIAMACHY instrument, please see the associated product user guide (PUG) or the Algorithm Theoretical Basis Documents.

Citable as:  ESA CCI GHG project team (2018): ESA Greenhouse Gases Climate Change Initiative (GHG_cci): Column-averaged CO2 from SCIAMACHY generated with the BESD algorithm (CO2_SCI_BESD), v02.01.02. Centre for Environmental Data Analysis, date of citation. https://catalogue.ceda.ac.uk/uuid/294b4075ddbc4464bb06742816813bdc
Abbreviation: Not defined
Keywords: ESA, GHG, CCI, CO2, BESD

Details

Previous Info:
No news update for this record
Previously used record identifiers:
No related previous identifiers.
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
File Format:
Data are in NetCDF format

Related Documents

 Algorithm Theoretical Basis Document Version 5 (ATBDv5) - The Bremen Optimal Estimation DOAS (BESD) algorithm for the retrieval of XCO2
 Product Validation and Intercomparison Report (PVIRv5)
 System Verification Report (SVR) for BESD v02.01.02
 Reuter et al, 2011, 'Retrieval of atmospheric CO2 with enhanced accuracy and precision from SCIAMACHY: Validation with FTS measurements and comparison with model results'
 GHG-CCI Data Products webpage
 Bremen BESD website
 Product User Guide
 ESA CCI Greenhouse Gases project website
 Comprehensive Error Characterisation Report: BESD full-physics retrieval algorithm for XCO2

Process overview

This dataset was generated by instruments deployed on platforms as listed below.

Instrument/Platform pairings

Envisat - SCIAMACHY Deployed on: Envisat

Mobile platform operations

Mobile Platform Operation 1 Mobile Platform Operation for: Envisat
Output Description

None
  • 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: degree
  • long_name: Sensor zenith angle
  • standard_name: sensor_zenith_angle
  • var_id: sensor_zenith_angle
  • names: Sensor zenith angle, sensor_zenith_angle
  • 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
  • var_id: xco2
  • standard_name: dry_atmosphere_mole_fraction_of_carbon_dioxide
  • long_name: column-average dry-air mole fraction of atmospheric carbon dioxide in dry air
  • names: dry_atmosphere_mole_fraction_of_carbon_dioxide, column-average dry-air mole fraction of atmospheric carbon dioxide in dry air
  • 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 weight
  • var_id: pressure_weight
  • names: pressure weight
  • long_name: quality flag
  • var_id: xco2_quality_flag
  • names: quality flag
  • units: degree
  • long_name: solar zenith angle
  • var_id: solar_zenith_angle
  • standard_name: solar_zenith_angle
  • names: solar zenith angle, solar_zenith_angle

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
Coverage
Temporal Range
Start time:
2003-01-08T00:00:00
End time:
2012-03-24T23:59:59
Geographic Extent

 
90.0000°
  
-180.0000°
  
180.0000°
 
-90.0000°
  
Related parties
Authors (1)
Publishers (1)