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Proceedings Paper

Quality assurance of spectral ultraviolet measurements in Europe through the development of a transportable unit (QASUME)
Author(s): Alkiviadis F. Bais; Mario Blumthaler; Julian Gröbner; Gunther Seckmeyer; Ann Ruth Webb; Peter Gorts; Tapani Koskela; Diana Rembges; Stelios Kazadzis; Josef Schreder; Peter Cotton; Peter Kelly; Natalia Kouremeti; Kimo Rikkonen; H. Studemund; Rick Tax; Sigrid Wuttke
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Paper Abstract

QASUME is a European Commission funded project that aims to develop and test a transportable unit for providing quality assurance to UV spectroradiometric measurements conducted in Europe. The comparisons will be performed at the home sites of the instruments, thus avoiding the risk of transporting instruments to participate in intercomparison campaigns. Spectral measurements obtained at each of the stations will be compared, following detailed and objective comparison protocols, against collocated measurements performed by a thoroughly tested and validated travelling unit. The transportable unit comprises a spectroradiometer, its calibrator with a set of calibration lamps traceable to the sources of different Standards Laboratories, and devices for determining the slit function and the angular response of the local spectroradiometers. The unit will be transported by road to about 25 UV stations over a period of about two years. The spectroradiometer of the transportable unit is compared in an intercomparison campaign with six instruments to establish a relation, which would then be used as a reference for its calibration over the period of its regular operation at the European stations. Different weather patterns (from clear skies to heavy rain) were present during the campaign, allowing the performance of the spectroradiometers to be evaluated under unfavourable conditions (as may be experienced at home sites) as well as the more desirable dry conditions. Measurements in the laboratory revealed that the calibration standards of the spectroradiometers differ by up to 10%. The evaluation is completed through comparisons with the same six instruments at their homes sites.

Paper Details

Date Published: 1 July 2003
PDF: 7 pages
Proc. SPIE 4896, Ultraviolet Ground- and Space-based Measurements, Models, and Effects II, (1 July 2003); doi: 10.1117/12.468641
Show Author Affiliations
Alkiviadis F. Bais, Aristotle Univ. of Thessaloniki (Greece)
Mario Blumthaler, Univ. Innsbruck (Austria)
Julian Gröbner, Institute for Health and Consumer Protection (Italy)
Gunther Seckmeyer, Univ. Hannover (Germany)
Ann Ruth Webb, Univ. of Manchester Institute of Science and Technology (United Kingdom)
Peter Gorts, National Institute of Public Health and the Environment (Netherlands)
Tapani Koskela, Finnish Meteorological Institute (Finland)
Diana Rembges, Institute for Health and Consumer Protection (Italy)
Stelios Kazadzis, Aristotle Univ. of Thessaloniki (Greece)
Josef Schreder, Univ. Innsbruck (Austria)
Peter Cotton, Univ. of Manchester Institute of Science and Technology (United Kingdom)
Peter Kelly, Univ. of Manchester Institute of Science and Technology (United Kingdom)
Natalia Kouremeti, Aristotle Univ. of Thessaloniki (Greece)
Kimo Rikkonen, Finnish Meterological Institute (Finland)
H. Studemund, Univ. Hannover (Germany)
Rick Tax, National Institute of Public Health and the Environment (Netherlands)
Sigrid Wuttke, Univ. Hannover (Germany)


Published in SPIE Proceedings Vol. 4896:
Ultraviolet Ground- and Space-based Measurements, Models, and Effects II
Wei Gao; Jay R. Herman; Guangyu Shi; Kazuo Shibasaki; James R. Slusser, Editor(s)

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