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

Identifier: https://catalogue.ceda.ac.uk/uuid/8f5623a85d2e4b9b8ab5313f65a7c994

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

Identifier: alternative.identifier / esacci.GHG.satellite-orbit-frequency.L2.CH4.SCIAMACHY.Envisat.IMAP.v7-2.r1.v20180702

Author

ESA CCI GHG project team - author

Custodian

Centre for Environmental Data Analysis (CEDA) - custodian

Rutherford Appleton Laboratory , Harwell , Oxon , OX11 0QX , United Kingdom

01235446432

Distributor

Centre for Environmental Data Analysis (CEDA) - distributor

Rutherford Appleton Laboratory , Harwell , Oxon , OX11 0QX , United Kingdom

01235446432

pointofContact

Centre for Environmental Data Analysis (CEDA) - point_of_contact

Rutherford Appleton Laboratory , Harwell , Oxon , OX11 0QX , United Kingdom

01235446432

pointofContact

Unavailable - Frankenberg, C. ( point_of_contact )

Publisher

Centre for Environmental Data Analysis (CEDA) - publisher

Rutherford Appleton Laboratory , Harwell , Oxon , OX11 0QX , United Kingdom

01235446432

Maintenance and update frequency: notPlanned Not planned

Update scope: dataset Dataset

Keywords

GEMET - INSPIRE themes, version 1.0

orthoimagery

Access constraints: otherRestrictions Other restrictions

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

Use constraints: otherRestrictions 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 Grid

Metadata language: EnglishEnglish

Topic category

Imagery base maps earth cover

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Begin date: 2003-01-08T00:00:00

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

Unique resource identifier: WGS 84

Distribution format

Data are in NetCDF format ()

Distributor

Centre for Environmental Data Analysis (CEDA) - Data Center Contact

Rutherford Appleton Laboratory , Harwell , Oxon , OX11 0QX , United Kingdom

01235446432

OnLine resource: CEDA Data Catalogue Page
Detail and access information for the resource

OnLine resource: DOWNLOAD
Download Data

OnLine resource: Sample Image
No further details.

OnLine resource: Product User Guide
No further details.

OnLine resource: GHG-CCI Data Products webpage
No further details.

OnLine resource: Frankenberg et al. 2011, 'Global column-averaged methane mixing ratios from 2003 to 2009 as derived from SCIAMACHY: Trends and variability'
No further details.

OnLine resource: Product Specification Document Version 3 (PSDv3)
No further details.

OnLine resource: ESA CCI Greenhouse Gases project website
No further details.

OnLine resource: System Verification Report (SVR) GHG-CCI Phase 2 CRDP#4 for sub-system CH4_SCI_IMAP
No further details.

OnLine resource: Product Validation and Intercomparison Report (PVIRv5)
No further details.

OnLine resource: Algorithm Theoretical Basis Document Version 4 (ATBDv4) - The SRON IMAP-DOAS algorithm for the retrieval of XCH4, v7.2
No further details.

Hierarchy level: dataset Dataset

Conformance result

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

File identifier: 8f5623a85d2e4b9b8ab5313f65a7c994 XML

Metadata language: EnglishEnglish

Character set: 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 UTF8

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

Hierarchy level: dataset Dataset

Date stamp: 2025-11-16T03:15:55

Metadata standard name: UK GEMINI

Metadata standard version: 2.3

Point of contact

Centre for Environmental Data Analysis (CEDA)

Rutherford Appleton Laboratory , Harwell , Oxon , OX11 0QX , United Kingdom

01235446432

Overviews

Spatial extent

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W

Provided by

Access to the portal

Read here the full details and access to the data.

Associated resources

Not available