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ESA Greenhouse Gases Climate Change Initiative (GHG_cci): Column-averaged CH4 from SCIAMACHY generated with the WFMD algorithm (CH4_SCI_WFMD), version 4.0

The CH4_SCI_WFMD dataset comprises level 2, column-averaged dry-air mole fractions (mixing ratios) of methane (XCH4). It has been produced using data acquired from the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) on board the European Space Agency's (ESA's) environmental research satellite ENVISAT, as part of the ESA's Greenhouse Gases Climate Change Initiative (GHG_cci) project. This version of the data is version 4.0, and forms part of the Climate Research Data Package 4.

The Weighting Function Modified DOAS (WFMD) algorithm is 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.

Simple

Date (Publication)
2018-03-19T21:10:04
Date (Creation)
2018-03-19T21:10:04
Identifier
https://catalogue.ceda.ac.uk/uuid/aa09603e91b44f3cb1573c9dd415e8a8
Identifier
Centre for Environmental Data Analysis (CEDA) / aa09603e91b44f3cb1573c9dd415e8a8
Identifier
alternative.identifier / esacci.GHG.satellite-orbit-frequency.L2.CH4.SCIAMACHY.Envisat.WFMD.v4-0.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 - Schneising, O. ( 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
  • greenhouse gases
  • SCIAMACHY
  • column-averaged dry air mole fraction of CH4
  • SCIAMACHY
  • SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY
  • column-averaged dry air mole fraction of CH4
  • greenhouse gases
  • satellite orbit frequency
  • University of Bremen
  • Envisat
  • Environmental Satellite
  • Level 2
  • WFMD
  • SCIAMACHY
  • ESA
  • GHG
  • CCI
  • CH4
  • WFMD
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
2002-10-01T00:00:00
End date
2011-12-31T23:59:59
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
System Verification Report (SVR) CRDP#4 - SCIAMACHY WFM-DOAS (WFMD) XCO2 and XCH4

No further details.

OnLine resource
U Bremen, WFMD web page

No further details.

OnLine resource
GHG-CCI Data Products webpage

No further details.

OnLine resource
Schneising et al, 2011,'Long-term analysis of carbon dioxide and methane column-averaged mole fractions retrieved from SCIAMACHY'

No further details.

OnLine resource
Product Specification Document Version 3 (PSDv3)

No further details.

OnLine resource
Sample Image

No further details.

OnLine resource
Comprehensive Error Characterisation Report (CECR) - SCIAMACHY WFM-DOAS (WFMD) XCO2 and XCH4

No further details.

OnLine resource
Product Validation and Intercomparison Report (PVIRv4)

No further details.

OnLine resource
Algorithm Theoretical Basis Document (ATBD) - SCIAMACHY WFM-DOAS (WFMD) XCO2 and XCH4

No further details.

OnLine resource
Product User Guide

No further details.

OnLine resource
ESA CCI Greenhouse Gases project website

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
aa09603e91b44f3cb1573c9dd415e8a8 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
2025-11-15T03:15:46
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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Keywords

GEMET - INSPIRE themes, version 1.0
orthoimagery

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