ESA Greenhouse Gases Climate Change Initiative (GHG_cci): Column-averaged CH4 from SCIAMACHY generated with the IMAP-DOAS algorithm (CH4_SCI_IMAP), v7.2

The CH4_SCI_IMAP dataset is comprised of level 2, column-averaged dry-air mole fractions (mixing ratios) of methane (CH4). It has been produced using data acquired from the SWIR spectra (channel 6) of the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) on board the European Space Agency's (ESA's) environmental research satellite ENVISAT using the IMAP-DOAS algorithm. It has been generated as part of ESA Greenhouse Gases Climate Change Initiative (GHG_cci) project. This version of the dataset is v7.2 and forms part of the Climate Research Data Package 4.

The IMAP-DOAS algorithm has been developed at the University of Heidelberg and SRON, and has been applied here to the SCIAMACHY data. This procedure and the algorithms validity are thoroughly described in Frankenberg et al (2011). A second product is also available which has been generated using the Weighting Function Modified DOAS (WFM-DOAS) algorithm.

The data product is stored per orbit in a single NetCDF4 file. Retrieval results are provided for the individual SCIAMACHY spatial footprints, no averaging having been applied. The product file contains the key products and information relevant to using the data, such as the vertical layering and averaging kernels. For further details on the product, including the IMAP algorithm and the SCIAMACHY instrument, please see the associated product user guide (PUG) or the Algorithm Theoretical Basis Document.

Date (Publication): 2018-03-19T21:16:29

Date (Creation): 2018-03-19T21:16:29

Citation identifier: https://catalogue.ceda.ac.uk/uuid/8f5623a85d2e4b9b8ab5313f65a7c994

Citation identifier: Centre for Environmental Data Analysis (CEDA) / 8f5623a85d2e4b9b8ab5313f65a7c994

Citation identifier: alternative.identifier / esacci.GHG.satellite-orbit-frequency.L2.CH4.SCIAMACHY.Envisat.IMAP.v7-2.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	Frankenberg, C.	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: 2003-01-08T00:00:00

End date: 2012-04-08T22:59:59

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/8f5623a85d2e4b9b8ab5313f65a7c994	CEDA Data Catalogue Page

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/neodc/esacci/ghg/data/crdp_4/SCIAMACHY/CH4_SCI_IMAP/v7.2/	DOWNLOAD

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/neodc/esacci/ghg/metadata/sample_images/ESACCI-GHG-L2-CH4-SCIAMACHY-IMAP-20100401-fv1.png	Sample Image

OnLine resource

Protocol	Linkage	Name
	http://www.esa-ghg-cci.org/?q=webfm_send/375	Product User Guide

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://onlinelibrary.wiley.com/doi/10.1029/2010JD014849/abstract	Frankenberg et al. 2011, 'Global column-averaged methane mixing ratios from 2003 to 2009 as derived from SCIAMACHY: Trends and variability'

OnLine resource

Protocol	Linkage	Name
	http://www.esa-ghg-cci.org/index.php?q=webfm_send/160	Product Specification Document Version 3 (PSDv3)

OnLine resource

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

OnLine resource

Protocol	Linkage	Name
	http://www.esa-ghg-cci.org/?q=webfm_send/376	System Verification Report (SVR) GHG-CCI Phase 2 CRDP#4 for sub-system CH4_SCI_IMAP

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
	http://www.esa-ghg-cci.org/?q=webfm_send/377	Algorithm Theoretical Basis Document Version 4 (ATBDv4) - The SRON IMAP-DOAS algorithm for the retrieval of XCH4, v7.2

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: 8f5623a85d2e4b9b8ab5313f65a7c994 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: 2026-03-11T03:17:31

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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