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Carbon monoxide, methane and carbon dioxide retrieved from sciamachy near-infrared nadir observations using WFM-DOAS

dc.contributor.authorBuchwitz, M.
dc.contributor.authorDe Beek, R.
dc.contributor.authorBurrows, J.P.
dc.contributor.authorBovensmann, H.
dc.contributor.authorDils, B.
dc.contributor.authorDe Mazière, M.
dc.date2006
dc.date.accessioned2016-11-22T15:02:19Z
dc.date.available2016-11-22T15:02:19Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/4529
dc.descriptionThe three "carbon gases" carbon monoxide (CO), methane (CH 4) and carbon dioxide (CO 2) are important atmospheric constituents affecting air quality and climate. The near-infrared nadir spectra of reflected solar radiation measured by SCIAMACHY on-board ENVISAT contain information on the vertical columns of these gases which we retrieve using the scientific algorithm WFM-DOAS. For CH 4 and CO 2 our main data products are dry air column averaged mixing ratios (XCH 4 in ppmv and XCO 2 in ppmv) determined by simultaneous measurements of the dry air mass obtained from oxygen (O 2) for CO 2 and CO 2 for methane. Our CO data product is the CO vertical column in molecules/cm 2. The SCIAMACHY data set is unique because of the high sensitivity of the near-infrared measurements with respect to concentration changes in the atmospheric boundary layer. This sensitivity is a pre-requisite to get information on regional surface sources and sinks which are currently only poorly constrained globally by atmospheric measurements. We present a short overview about the latest versions of the retrieval algorithm (WFM-DOAS version 0.5 for CO and CH 4 and version 0.4 for CO 2) and processed data (year 2003 data set based on Level 1 version 4 spectra) including comparisons with global and local reference data (MOPITT, ground based FTS, and global models).
dc.languageeng
dc.relation.ispartofseriesESA SP
dc.titleCarbon monoxide, methane and carbon dioxide retrieved from sciamachy near-infrared nadir observations using WFM-DOAS
dc.typeConference
dc.subject.frascatiPhysical sciences
dc.audienceScientific
dc.subject.freeAir quality
dc.subject.freeAlgorithms
dc.subject.freeAtmospheric radiation
dc.subject.freeCarbon dioxide
dc.subject.freeCarbon monoxide
dc.subject.freeClimate change
dc.subject.freeData acquisition
dc.subject.freeMethane
dc.subject.freeReflection
dc.subject.freeSolar radiation
dc.subject.freeAtmospheric boundary layers
dc.subject.freeInfrared nadir spectra
dc.subject.freeMixing ratios
dc.subject.freeWFM-DOAS
dc.subject.freeAtmospheric chemistry
dc.source.titleProceedings of the First Atmospheric Science Conference
dc.source.issue628
Orfeo.peerreviewedNo
dc.identifier.scopus2-s2.0-33749174610


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