NERC Data Catalogue Service
ESA Greenhouse Gases Climate Change Initiative (GHG CCI): SCIAMACHY CH4 Level 2 Data Product (CH4_SCI_WFMD), version 3.9, generated with the WFMD algorithm
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 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 Weighting Function Modified DOAS (WFMD) algorithm to the SCIAMACHY data, a least-squares method based on scaling pre-selected atmospheric vertical profiles. A second product is also available, which has been generated from the SCIAMACHY data using the IMAP algorithm.
The data product is stored per day in separate NetCDF-files (NetCDF-4 classic model). The product files contain the key products and other information relevant for the use of the data e.g. the averaging kernels. Note that the results since November 2005 are considered to be of reduced quality in comparison to the earlier results because the extended-wavelength part (1590-1770 nm) of SCIAMACHY's channel 6, covering the methane 2v3 absorption band used for the methane retrieval, is subject to irreversible displacement damage induced by high energy solar protons, which occurs from time to time at individual detector pixels. Therefore several affected detector pixels had to be excluded for the time period since November 2005.
For further information on the product, including details of the WFMD algorithm and the SCIAMACHY instrument, please see the associated product user guide (PUG) or the Algorithm Theoretical Basis Documents 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/
Simple
- Date (Publication)
- 2016-04-11T08:17:05
- Date (Creation)
- 2016-04-11T08:17:05
- Identifier
- Centre for Environmental Data Analysis (CEDA) / 89a49c8e8dbb4a1bb8799589ffd39dc7
- Maintenance and update frequency
- unknown Unknown
- Update scope
- dataset Dataset
- Keywords
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- University of Bremen
- greenhouse gases
- Level 2
- Envisat
- SCIAMACHY
- column-averaged dry air mole fraction of CH4
- SCIAMACHY
- Environmental Satellite
- satellite orbit frequency
- ESA
- GHG
- CCI
- CH4
- WFMD
- Greenhouse Gas
- GEMET - INSPIRE themes, version 1.0
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- 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
- Spatial representation type
- grid Grid
- Metadata language
- EnglishEnglish
- Topic category
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- Imagery base maps earth cover
))
- Begin date
- 2002-10-01T00:00:00
- End date
- 2011-12-31T23:59:59
- Unique resource identifier
- WGS 84
- Distribution format
-
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Data are in NetCDF format
()
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Data are in NetCDF format
()
- OnLine resource
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CEDA Data Catalogue Page
Detail and access information for the resource
- OnLine resource
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DOWNLOAD
Download Data
- OnLine resource
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ESA CCI Greenhouse Gases project website
No further details.
- OnLine resource
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U Bremen, WFMD web page
No further details.
- OnLine resource
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GHG-CCI Data Products webpage
No further details.
- OnLine resource
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Schneising et al, 2011,'Long-term analysis of carbon dioxide and methane column-averaged mole fractions retrieved from SCIAMACHY'
No further details.
- OnLine resource
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System Verification Report (SVR) CRDP#3 - SCIAMACHY WFM-DOAS (WFMD) XCO2 and XCH4
No further details.
- OnLine resource
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Comprehensive Error Characterisation Report (CECR) - SCIAMACHY WFM-DOAS (WFMD) XCO2 and XCH4
No further details.
- OnLine resource
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Product Validation and Intercomparison Report (PVIRv4)
No further details.
- OnLine resource
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Product Specification Document Version 3 (PSDv3)
No further details.
- OnLine resource
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Algorithm Theoretical Basis Document (ATBD) - SCIAMACHY WFM-DOAS (WFMD) XCO2 and XCH4
No further details.
- OnLine resource
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Product User Guide
No further details.
- OnLine resource
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Sample Image
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
- 89a49c8e8dbb4a1bb8799589ffd39dc7 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
- 2025-05-09T02:29:55
- Metadata standard name
- UK GEMINI
- Metadata standard version
- 2.3
Overviews
Spatial extent
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