Global spectral irradiance array spectroradiometer validation according to WMO

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dc.identifier.uri Zuber, Ralf Ribnitzky, Mario Tobar, Mario Lange, Kezia Kutscher, Dimitrij Schrempf, Michael Niedzwiedz, Angelika Seckmeyer, Gunther 2018-11-01T09:00:44Z 2018-11-01T09:00:44Z 2018
dc.identifier.citation Zuber, R.; Ribnitzky, M.; Tobar, M.; Lange, K.; Kutscher, D. et al.: Global spectral irradiance array spectroradiometer validation according to WMO. In: Measurement Science and Technology 29 (2018), Nr. 10, 105801. DOI:
dc.description.abstract Solar spectral irradiance measured by two recently developed array spectroradiometers (called UV-BTS and VIS-BTS) are compared to the results of a scanning double monochromator system which is certified as a travelling reference instrument by the Network for the detection of atmospheric composition change (NDACC) and fulfils the specifications of S-2 UV instruments of the world meteorological organization (WMO). The comparison took place between 15 and 18 May 2017 at the Institute of Meteorology and Climatology of the University of Hanover (IMuK) between 4:00 and 17:00UTC. The UV-BTS array spectroradiometer is equipped with special hardware to significantly reduce internal stray light which has been the limiting factor of many array spectroradiometers in the past. It covers a wavelength range of 200 nm-430 nm. The VIS-BTS covers a wider spectral range from 280 nm up to 1050 nm, and stray light reduction is achieved by mathematical methods. For the evaluation, wavelength integrated quantities and spectral global irradiance are compared. The deviation for UV index measured by the UV-BTS, is within ±1% for solar zenith angles (SZA) below 70° and increased to a maximum of ±3% for SZA between 70° and 85° when synchronisation between measurements was possible. The deviation of global spectral irradiance is smaller ±2.5% in the spectral range from 300 nm to 420 nm (evaluated for SZA < 70°). The VIS-BTS achieved the same deviation for blue light hazard as the UV-BTS for the UV index. The evaluations of global spectral irradiance data of the VIS-BTS show a deviation smaller than ±2% in the spectral range from 365 nm to 900 nm (evaluated for SZA < 70°). Below 365 nm, the deviation rises up to ±7% at 305 nm due to remaining stray light. The agreement within the limited time of the intercomparison is considered to be satisfactory for a number of applications and provides a good basis for further investigations. © 2018 IOP Publishing Ltd. eng
dc.language.iso eng
dc.publisher Bristol : Institute of Physics Publishing
dc.relation.ispartofseries Measurement Science and Technology 29 (2018), Nr. 10
dc.rights CC BY 3.0 Unported
dc.subject blue light hazard eng
dc.subject NDACC intercomparison eng
dc.subject spectroradiometer eng
dc.subject stray light eng
dc.subject UV index eng
dc.subject WMO S-2 UV instrument eng
dc.subject Atmospheric composition eng
dc.subject Hazards eng
dc.subject Meteorology eng
dc.subject Radiometers eng
dc.subject Spectrometers eng
dc.subject Ultraviolet instruments eng
dc.subject Blue light eng
dc.subject Intercomparisons eng
dc.subject Reference instruments eng
dc.subject Solar spectral irradiance eng
dc.subject Spectro-radiometers eng
dc.subject University of Hanover eng
dc.subject UV index eng
dc.subject World meteorological organizations eng
dc.subject Stray light eng
dc.subject.ddc 600 | Technik ger
dc.subject.ddc 620 | Ingenieurwissenschaften und Maschinenbau ger
dc.title Global spectral irradiance array spectroradiometer validation according to WMO
dc.type Article
dc.type Text
dc.relation.issn 0957-0233
dc.bibliographicCitation.issue 10
dc.bibliographicCitation.volume 29
dc.bibliographicCitation.firstPage 105801
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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