Articles | Volume 14, issue 5
Atmos. Meas. Tech., 14, 3573–3582, 2021
Atmos. Meas. Tech., 14, 3573–3582, 2021
Research article
19 May 2021
Research article | 19 May 2021

The design and development of a tuneable and portable radiation source for in situ spectrometer characterisation

Marek Šmíd et al.

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Cited articles

Balling, P., Masika, P., Kren, P., and Dolezal, M.: Length and refractive index measurement by Fourier transform interferometry, Meas. Sci. Technol., 23, 1–13,, 2012. 
Bass, A. M. and Paur, R. J.: The ultraviolet cross-sections of ozone. I. The measurements, II – Results and temperature dependence, Atmospheric ozone, Proceedings of the Quadrennial, 1, 606–616, 1985. 
Dobson, G. M. B.: Forty Years: Research on Atmospheric Ozone at Oxford: a History, Appl. Optics, 7, 387–405, 1968. 
Gröbner, J., Schill, H., Egli, L., and Stübi, R.: Consistency of total column ozone measurements between the Brewer and Dobson spectroradiometers of the LKO Arosa and PMOD/WRC Davos, Atmos. Meas. Tech. Discuss. [preprint],, in review, 2021. 
JCGM 100:2008(E): Evaluation of measurement data – Guide to the expression of uncertainty in measurement, BIPM, JCGM, available at: (last access: 18 May 2021), 2008. 
Short summary
We designed and developed a tuneable and portable radiation source (TuPS) to provide a reference wavelength scale, with a bandwidth of emitted radiation of 0.13 nm and uncertainty in wavelength of 0.02 nm. TuPS was successfully used for the in-field characterization of 14 Dobson spectrophotometers in campaigns in Europe. The line spread functions of Dobsons measured by TuPS in conjunction with the cross-sections from IUP improves the consistency between the Dobson and Brewer from 3 % to 1 %.