33cd85fdc2454d2796c64c673b9427c9 English 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 0508f3dd991144aa80346007a415fb07 dataset Centre for Environmental Data Analysis (CEDA) 01235446432 Rutherford Appleton Laboratory Harwell Oxon OX11 0QX United Kingdom support@ceda.ac.uk pointOfContact 2026-05-06T02:07:14 UK GEMINI 2.3 WGS 84 ESA Greenhouse Gases Climate Change Initiative (GHG CCI): SCIAMACHY CH4 Level 2 Data Product (CH4_SCI_IMAP), version 7.1, generated with the IMAP-DOAS algorithm 2016-04-11T08:23:02 publication 2016-04-11T08:23:02 creation https://catalogue.ceda.ac.uk/uuid/33cd85fdc2454d2796c64c673b9427c9 33cd85fdc2454d2796c64c673b9427c9 Centre for Environmental Data Analysis (CEDA) Part of the European Space Agency's (ESA) Greenhouse Gases (GHG) Climate Change Initiative (CCI) project and the Climate Research Data Package Number 3 (CRDP#3), the XCH4 SCI product comprises a level 2, column-averaged dry-air mole fraction (mixing ratio) for methane (CH4). The product 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 environmental research satellite ENVISAT. This product has been derived by applying the IMAP-DOAS algorithm developed at the University of Heidelberg and SRON 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 in the documentation section. The GHG-CCI team encourage all users of their products to register with them to receive information on any updates or issues regarding the data products and to receive notification of new product releases. To register, please use the following link: http://www.iup.uni-bremen.de/sciamachy/NIR_NADIR_WFM_DOAS/CRDP_REG/ ESA CCI GHG project team author unknown author Centre for Environmental Data Analysis (CEDA) custodian 01235446432 Rutherford Appleton Laboratory Harwell Oxon OX11 0QX United Kingdom support@ceda.ac.uk custodian Centre for Environmental Data Analysis (CEDA) distributor 01235446432 Rutherford Appleton Laboratory Harwell Oxon OX11 0QX United Kingdom support@ceda.ac.uk distributor Centre for Environmental Data Analysis (CEDA) point_of_contact 01235446432 Rutherford Appleton Laboratory Harwell Oxon OX11 0QX United Kingdom support@ceda.ac.uk pointofContact Centre for Environmental Data Analysis (CEDA) publisher 01235446432 Rutherford Appleton Laboratory Harwell Oxon OX11 0QX United Kingdom support@ceda.ac.uk publisher unknown dataset Netherlands Institute for Space Research greenhouse gases Level 2 Envisat SCIAMACHY column-averaged dry air mole fraction of CH4 SCIAMACHY Environmental Satellite satellite orbit frequency ESA GHG CCI CH4 IMAP Greenhouse Gas orthoimagery theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication otherRestrictions Public data: access to these data is available to both registered and non-registered users. otherRestrictions 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. grid English imageryBaseMapsEarthCover -180.0 180.0 -90.0 90.0 2003-01-01T00:00:00 2012-04-08T22:59:59 Data are in NetCDF format Centre for Environmental Data Analysis (CEDA) Data Center Contact 01235446432 Rutherford Appleton Laboratory Harwell Oxon OX11 0QX United Kingdom support@ceda.ac.uk distributor https://catalogue.ceda.ac.uk/uuid/33cd85fdc2454d2796c64c673b9427c9 CEDA Data Catalogue Page Detail and access information for the resource information http://data.ceda.ac.uk/neodc/esacci/ghg/data/crdp_3/SCIAMACHY/IMAP_CH4/v71_cci/ DOWNLOAD Download Data download http://www.esa-ghg-cci.org/?q=webfm_send/300 Product Validation and Intercomparison Report (PVIRv4) No further details. information http://www.esa-ghg-cci.org/sites/default/files/documents/public/documents/GHG-CCI_DATA.html GHG-CCI Data Products webpage No further details. information 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' No further details. information http://www.esa-ghg-cci.org/?q=webfm_send/289 Product User Guide No further details. information http://www.esa-ghg-cci.org/?q=webfm_send/295 System Verification Report (SVR) GHG-CCI Phase 2 CRDP#3 for sub-system CH4_SCI_IMAP No further details. information http://www.esa-ghg-cci.org/?q=webfm_send/310 Comprehensive Error Characterisation Report: SRON IMAP-DOAS retrievals of XCH4 No further details. information http://www.esa-ghg-cci.org/index.php?q=webfm_send/160 Product Specification Document Version 3 (PSDv3) No further details. information http://www.esa-ghg-cci.org/?q=webfm_send/187 Algorithm Theoretical Basis Document Version 3 (ATBDv3) - The SRON IMAP-DOAS algorithm for the retrieval of XCH4, v7.0 No further details. information http://data.ceda.ac.uk/neodc/esacci/ghg/metadata/sample_images/ESACCI-GHG-L2-CH4-SCIAMACHY-IMAP-20100401-fv1.png Sample Image No further details. information https://climate.esa.int/projects/ghgs/ ESA CCI Greenhouse Gases project website No further details. information dataset 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 2010-12-08 Data were processed by the ESA CCI GHG project team and supplied to CEDA as part of the ESA CCI Open Data Portal Project