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|Title:||Travelling Reference Spectroradiometer for Routine Quality Assurance of Spectral Solar Untraviolet Irradiance Measurements.|
|Authors:||GROEBNER Julian; SCHREDER Josef; KAZADZIS Stelios; BAIS Alkiviadis F.; BLUMTHALER Mario; GORTS Peter; TAX Rick; KOSKELA Tapani; SECKMEYER Gunther; WEBB Ann R.; REMBGES DIANA|
|Citation:||APPLIED OPTICS vol. 44 no. 25 p. 5321-5331|
|Publisher:||OPTICAL SOC AMER|
|Type:||Articles in Journals|
|Abstract:||A transportable reference spectroradiometer for measuring spectral solar ultraviolet irradiance has been developed and validated. The expanded uncertainty of solar irradiance measurements with this reference spectroradiometer, based on the described, is 8.8% to 4.6%, depending on the wavelength and the solar zenith angle. The accuracy of the spectroradiometer was validated by repeated sute visits to two European UV monitoring sites as weel as by regular comparisons with the reference spectroradiometer of the European Reference Centre for UV radiation measurements in Ispra, Italy. The spectral solar irradiance measurements of the Quality Assurance of Spectral Ultraviolet Measurements in Europe through the Development of a Transportable Unit (QASUME) spectroradiometer and these three spectroradiometers have agreed to better than 6% during the ten intercomparison campaigns held from 2002 to 2004. If the differences in irradiance scales of as much as 2% are taken into account, the agreement is of the order of 4% over the wavelength of 300-400 mm.|
|JRC Institute:||Institute for Health and Consumer Protection|
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