ESA Greenhouse Gases Climate Change Initiative (GHG_cci): Column-averaged CO2 from SCIAMACHY generated with the WFMD algorithm (CO2_SCI_WFMD), v4.0

The CO2_SCI_WFMD dataset comprises level 2, column-averaged dry-air mole fractions (mixing ratios) of carbon dioxide (XCO2) from the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) on board the European Space Agency's environmental research satellite ENVISAT. It has been produced using the Weighting Function Modified DOAS (WFM-DOAS) algorithm, by the ESA Greenhouse Gases Climate Change Initiative (GHG_cci) project.

The WFM-DOAS algorithm is a least-squares method based on scaling pre-selected atmospheric vertical profiles. Note that this has been designated as an 'alternative' algorithm for the GHG_cci and another XCO2 product has also been generated from the SCIAMACHY data using the baseline algorithm (the Bremen Optimal Estimation DOAS (BESD) algorithm). It is advised that users who aren't sure whether to use the baseline or alternative product use the product generated with the BESD baseline algorithm. For more information regarding the differences between baseline and alternative algorithms please see the GHG-CCI data products webpage.

The data product is stored per day in seperate NetCDF-files (NetCDF-4 classic model). The product files contain the key products, i.e. the retrieved column-averaged dry air mole fractions for XCO2, several other useful parameters and additional information relevant to using the data e.g. the averaging kernels. For further information on the product, including details of the WFMD algorithm, the SCIAMACHY instrument and issues associated with the data please see the associated product user guide (PUG) or the Algorithm Theoretical Basis Documents in the documentation section.

Date (Publication): 2018-03-19T20:57:44

Date (Creation): 2018-03-19T20:57:44

Citation identifier: https://catalogue.ceda.ac.uk/uuid/e493802d83c846c8b76f817866fb74cc

Citation identifier: Centre for Environmental Data Analysis (CEDA) / e493802d83c846c8b76f817866fb74cc

Citation identifier: alternative.identifier / esacci.GHG.satellite-orbit-frequency.L2.CO2.SCIAMACHY.Envisat.WFMD.v4-0.r1.v20180702

Point of contact

Organisation name	Individual name	Electronic mail address	Role
ESA CCI GHG project team		unknown	Author
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Custodian
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Distributor
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	pointofContact
Unavailable	Schneising, O.	Unavailable	pointofContact
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Publisher

Maintenance and update frequency: Not planned

Update scope: Dataset

Keywords

GEMET - INSPIRE themes, version 1.0

orthoimagery

Access constraints: Other restrictions

Other constraints: Public data: access to these data is available to both registered and non-registered users.

Use constraints: Other restrictions

Other constraints: Under the following licence https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_ghg_terms_and_conditions.pdf, appropriate use of these data may fall under any use. This message is intended as guidance, always read the full licence. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.

Spatial representation type: Grid

Language: English

Topic category

Imagery base maps earth cover

Begin date: 2002-10-01T00:00:00

End date: 2012-04-08T23:59:59

Unique resource identifier: WGS 84

Distribution format

Name	Version
Data are in NetCDF format

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
	https://catalogue.ceda.ac.uk/uuid/e493802d83c846c8b76f817866fb74cc	CEDA Data Catalogue Page

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/neodc/esacci/ghg/data/crdp_4/SCIAMACHY/CO2_SCI_WFMD/v4.0/	DOWNLOAD

OnLine resource

Protocol	Linkage	Name
	http://www.esa-ghg-cci.org/index.php?q=webfm_send/335	Product User Guide

OnLine resource

Protocol	Linkage	Name
	http://www.iup.uni-bremen.de/sciamachy/NIR_NADIR_WFM_DOAS/products/	Bremen WFMD website

OnLine resource

Protocol	Linkage	Name
	http://www.esa-ghg-cci.org/sites/default/files/documents/public/documents/GHG-CCI_DATA.html	GHG-CCI Data Products webpage

OnLine resource

Protocol	Linkage	Name
	http://www.atmos-chem-phys.org/11/2863/2011/acp-11-2863-2011.html	Schneising et al, 2011,'Long-term analysis of carbon dioxide and methane column-averaged mole fractions retrieved from SCIAMACHY'

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/neodc/esacci/ghg/metadata/sample_images/ESACCI-GHG-L2-CO2-SCIAMACHY-WFMD-20100401-fv1.png	Sample Image

OnLine resource

Protocol	Linkage	Name
	http://www.esa-ghg-cci.org/index.php?q=webfm_send/347	Comprehensive Error Characterisation Report (CECR) - SCIAMACHY WFM-DOAS (WFMD) XCO2 and XCH4

OnLine resource

Protocol	Linkage	Name
	http://www.esa-ghg-cci.org/index.php?q=webfm_send/334	Algorithm Theoretical Basis Document (ATBD) - SCIAMACHY WFM-DOAS (WFMD) XCO2 and XCH4

OnLine resource

Protocol	Linkage	Name
	http://www.esa-ghg-cci.org/index.php?q=webfm_send/336	System Verification Report (SVR) CRDP#4 - SCIAMACHY WFM-DOAS (WFMD) XCO2 and XCH4

OnLine resource

Protocol	Linkage	Name
	http://www.esa-ghg-cci.org/?q=webfm_send/352	Product Validation and Intercomparison Report (PVIRv5)

OnLine resource

Protocol	Linkage	Name
	https://climate.esa.int/projects/ghgs/	ESA CCI Greenhouse Gases project website

Hierarchy level: Dataset

Conformance result

Title: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

Date (Publication): 2010-12-08

Statement: Data were processed by the ESA CCI GHG project team and supplied to CEDA as part of the ESA CCI Open Data Portal Project

Metadata

File identifier: e493802d83c846c8b76f817866fb74cc XML

Metadata language: English

Character set: UTF8

Parent identifier: ESA Greenhouse Gases Climate Change Initiative (GHG_cci) dataset collection
0508f3dd991144aa80346007a415fb07

Hierarchy level: Dataset

Date stamp: 2026-03-11T03:17:30

Metadata standard name: UK GEMINI

Metadata standard version: 2.3

Metadata author

Organisation name	Individual name	Electronic mail address	Role
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Point of contact

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