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GDP 4.0 transfer to SGP 3.0 for SCIAMACHY NO2 column processing: Verification with SDOAS / GDOAS prototype algorithms and delta-validation with NDACC / UV-visible network data

dc.contributor.authorLambert, J.-C.
dc.contributor.authorGranville, J.
dc.contributor.authorLerot, C.
dc.contributor.authorHendrick, F.
dc.contributor.authorVan Roozendael, M.
dc.contributor.authorAndersen, S.B.
dc.contributor.authorDorokhov, V.
dc.contributor.authorGerard, P.
dc.contributor.authorGil, M.
dc.contributor.authorGoutail, F.
dc.contributor.authorGruzdev, A.N.
dc.contributor.authorHeld, G.
dc.contributor.authorIonov, D.V.
dc.contributor.authorJohnston, P.V.
dc.contributor.authorKostadinov, I.
dc.contributor.authorKreher, K.
dc.contributor.authorKyrö, E.
dc.contributor.authorLeveau, J.
dc.contributor.authorNavarro-Comas, M.
dc.contributor.authorPetritoli, A.
dc.contributor.authorPommereau, J.-P.
dc.contributor.authorRichter, A.
dc.contributor.authorRoscoe, H.K.
dc.contributor.authorSemenov, V.K.
dc.contributor.authorStebel, K.
dc.contributor.authorVaughan, G.
dc.contributor.authorWagner, T.
dc.contributor.authorWittrock, F.
dc.contributor.authorYela, M.
dc.date2007
dc.date.accessioned2016-09-27T11:09:47Z
dc.date.available2016-09-27T11:09:47Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/4423
dc.descriptionUntil mid 2006, SCIAMACHY data processors for the operational retrieval of nitrogen dioxide (NO2) column data were based on the historical version 2 of the GOME Data Processor (GDP). On top of known problems inherent to GDP 2, ground-based validations of SCIAMACHY NO2 data revealed issues specific to SCIAMACHY, like a large cloud-dependent offset occurring at Northern latitudes. In 2006, the GDOAS prototype algorithm of the improved GDP version 4 was transferred to the off-line SCIAMACHY Ground Processor (SGP) version 3.0. In parallel, the calibration of SCIAMACHY radiometric data was upgraded. Before operational switch-on of SGP 3.0 and public release of upgraded SCIAMACHY NO2 data, we have investigated the accuracy of the algorithm transfer: (a) by checking the consistency of SGP 3.0 with prototype algorithms; and (b) by comparing SGP 3.0 NO2 data with ground-based observations reported by the WMO/GAW NDACC network of UV-visible DOAS/SAOZ spectrometers. This delta-validation study concludes that SGP 3.0 is a significant improvement with respect to the previous processor IPF 5.04. For three particular SCIAMACHY states, the study reveals unexplained features in the slant columns and air mass factors, although the quantitative impact on SGP 3.0 vertical columns is not significant.
dc.languageeng
dc.relation.ispartofseries
dc.titleGDP 4.0 transfer to SGP 3.0 for SCIAMACHY NO2 column processing: Verification with SDOAS / GDOAS prototype algorithms and delta-validation with NDACC / UV-visible network data
dc.typeConference
dc.subject.frascatiNatural sciences
dc.audienceScientific
dc.subject.freeCalibration
dc.subject.freeData processing
dc.subject.freeNitric oxide
dc.subject.freeProblem solving
dc.subject.freeRadiometry
dc.subject.freeUltraviolet spectrometers
dc.subject.freeAlgorithm transfer
dc.subject.freeGround-based validations
dc.subject.freeNorthern latitudes
dc.subject.freePrototype algorithms
dc.subject.freeWeather forecasting
dc.source.titleProceedings of the Third Workshop on the Atmospheric Chemistry Validation of Envisat (ACVE-3)
dc.source.volume642
Orfeo.peerreviewedNo
dc.identifier.scopus2-s2.0-34249894715


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