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International intercomparison of multiband filter radiometers in Oslo 2005

dc.contributor.authorJohnsen, B.
dc.contributor.authorKjeldstad, B.
dc.contributor.authorAalerud, T.N.
dc.contributor.authorNilsen, L.T.
dc.contributor.authorSchreder, J.
dc.contributor.authorBlumthaler, M.
dc.contributor.authorBernhard, G.
dc.contributor.authorBagheri, A.
dc.contributor.authorBhattarai, B.
dc.contributor.authorTopaloglou, C.
dc.contributor.authorZablocki, G.
dc.contributor.authorMeinander, O.
dc.contributor.authorHøiskar, B.A.
dc.contributor.authorHaugen, R.
dc.contributor.authorDurham, W.S.
dc.contributor.authorJanson, G.
dc.contributor.authorMarrero, A.R.
dc.contributor.authorDahlback, A.
dc.contributor.authorBolsée, D.
dc.contributor.authorSlusser, J.R.
dc.contributor.authorStamnes, J.
dc.contributor.authorTorres, C.
dc.contributor.authorSmedley, A.R.D.
dc.contributor.authorPaulsson, L.-E.
dc.contributor.authorLakkala, K.
dc.contributor.authorWebb, A.R.
dc.contributor.authorØrbæk, J.B.
dc.contributor.authorGrimenes, A.A.
dc.contributor.authorRingstad, T.
dc.contributor.authorLange, T.
dc.contributor.authorJosefsson, W.
dc.date2006
dc.date.accessioned2016-11-22T12:47:49Z
dc.date.available2016-11-22T12:47:49Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/4512
dc.descriptionMultiband filter radiometers (MBFRs) are extensively used in national networks for UV climate monitoring and information to the public about the potential risk of solar UV exposure. In order to provide an international, uniform expression of the Global UV index measurements, a harmonized calibration scale is needed. In this paper we present the results of the first international intercomparison of MBFRs held in Oslo in 2005. The purposes are to evaluate the UV-index scale of different radiometers and to provide a harmonized UV-index scale based on the radiometers individual directional and absolute spectral response functions. In total 43 MBFR radiometers and 4 high resolution spectroradiometers were assembled, representing UV-monitoring networks operated by institutions in US, Spain, Greece, Poland, Belgium, UK, Austria, Norway, Sweden and Finland. The radiometers are operating worldwide, with stations in the Antarctica and Arctic, North- and South-America, Africa, Europe, Middle-East and Nepal. All sky conditions were realized during the campaign period. The agreement between the users' own processed UVI and the reference is generally very good; within ±5% for 22 out of 26 data sets (75%) and ±10% for 23 out of 26 (88%). Solar zenith dependent discrepancies and drift in the users' UVI scales is seen, but the performance of most radiometers is generally very good. All the objectives planned for the intercomparison were fulfilled and the campaign considered a success.
dc.languageeng
dc.titleInternational intercomparison of multiband filter radiometers in Oslo 2005
dc.typeConference
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceScientific
dc.subject.freeBandpass filters
dc.subject.freeClimate change
dc.subject.freeInformation retrieval
dc.subject.freeNeural networks
dc.subject.freeSolar energy
dc.subject.freeUltraviolet radiation
dc.subject.freeGlobal UV index
dc.subject.freeGUV
dc.subject.freeHarmonized UV index scale
dc.subject.freeMultiband filter radiometers
dc.subject.freeNILU-UV
dc.subject.freeUV monitoring
dc.subject.freeUVMFR-7
dc.subject.freeRadiometers
dc.source.titleProceedings of SPIE, Remote Sensing of Clouds and the Atmosphere XI
dc.source.volume6362
dc.source.page63620W
Orfeo.peerreviewedNo
dc.identifier.doi10.1117/12.688918
dc.identifier.scopus2-s2.0-33846642657


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