Articles | Volume 14, issue 5
Atmos. Meas. Tech., 14, 3573–3582, 2021
https://doi.org/10.5194/amt-14-3573-2021
Atmos. Meas. Tech., 14, 3573–3582, 2021
https://doi.org/10.5194/amt-14-3573-2021
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, https://doi.org/10.1088/0957-0233/23/9/094001, 2012. 
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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], https://doi.org/10.5194/amt-2020-497, in review, 2021. 
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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 %.