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The GODFIT algorithm: A direct fitting approach to improve the accuracy of total ozone measurements from GOME

dc.contributor.authorLerot, C.
dc.contributor.authorVan Roozendael, M.
dc.contributor.authorLambert, J.-C.
dc.contributor.authorGranville, J.
dc.contributor.authorVan Gent, J.
dc.contributor.authorLoyola, D.
dc.contributor.authorSpurr, R.
dc.date2010
dc.date.accessioned2016-03-30T12:01:17Z
dc.date.available2016-03-30T12:01:17Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/3184
dc.descriptionWe present the total ozone retrieval algorithm GODFIT (GOME Direct-FITting). Applied to nadir backscattered measurements from the Global Ozone Monitoring Experiment (GOME), it is based on a direct-fitting approach by which spectral radiances simulated using the radiative transfer model LIDORT v3.3 (Linearized Discrete Ordinate Radiative Transfer) are adjusted to measurements in the 325-335 nm interval. Total O3 columns retrieved from GOME spectra have been compared not only to columns retrieved from Ozone Monitoring Instrument (OMI) measurements using the TOMS v8.5 algorithm, but also to correlative ground-based measurements from the GAW/NDACC networks (Global Atmosphere Watch/Network for the Detection of Atmospheric Composition Change). We show that GODFIT produces a significant reduction of the GOME ground-based differences and some of the associated dependencies, compared with the GOME Data Processor (GDP) 4.1 product. Version 5 of GDP, based on the GODFIT algorithm, will be released in spring 2010.
dc.languageeng
dc.titleThe GODFIT algorithm: A direct fitting approach to improve the accuracy of total ozone measurements from GOME
dc.typeArticle
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceScientific
dc.subject.freeBack-scattered
dc.subject.freeData processors
dc.subject.freeDiscrete ordinates
dc.subject.freeGlobal ozone monitoring experiments
dc.subject.freeGround based
dc.subject.freeGround based measurement
dc.subject.freeOzone monitoring instruments
dc.subject.freeRadiative transfer model
dc.subject.freeSpectral radiance
dc.subject.freeTotal ozone
dc.subject.freeTotal ozone measurements
dc.subject.freeAlgorithms
dc.subject.freeAtmospheric composition
dc.subject.freeOzone
dc.subject.freeRadiative transfer
dc.subject.freeUltraviolet spectrometers
dc.subject.freeMonitoring
dc.subject.freealgorithm
dc.subject.freecorrelation
dc.subject.freeGOME
dc.subject.freeground-based measurement
dc.subject.freenadir
dc.subject.freeradiative transfer
dc.subject.freesatellite data
dc.subject.freesatellite imagery
dc.subject.freetotal ozone
dc.source.titleInternational Journal of Remote Sensing
dc.source.volume31
dc.source.issue2
dc.source.page543-550
Orfeo.peerreviewedYes
dc.identifier.doi10.1080/01431160902893576
dc.identifier.scopus2-s2.0-77649165357


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