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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union

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https://doi.org/10.5194/amt-2017-403
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
05 Feb 2018
Review status
This discussion paper is a preprint. A revision of the manuscript is under review for the journal Atmospheric Measurement Techniques (AMT).
Monte Carlo method for determining uncertainty of total ozone derived from direct solar irradiance spectra: Application to Izaña results
Anna Vaskuri1, Petri Kärhä1, Luca Egli2, Julian Gröbner2, and Erkki Ikonen1,3 1Metrology Research Institute, Aalto University, P.O. Box 15500, 00076 Aalto, Finland
2Physikalisch-Meteorologisches Observatorium Davos, World Radiation Center, Dorfstrasse 33, 7260 Davos Dorf, Switzerland
3MIKES Metrology, VTT Technical Research Centre of Finland Ltd, P.O. Box 1000, 02044 VTT, Finland
Abstract. We demonstrate a Monte Carlo model to calculate the uncertainties of total ozone column, TOC, derived from ground-based directional solar spectral irradiance measurements. The model takes into account effects that correlations in the spectral irradiance data may have on the results. The model is tested with spectral data measured with three different spectroradiometers at an intercomparison campaign of the research project Traceability for atmospheric total column ozone at Izaña, Tenerife on 17 September 2016. The TOC values derived at noon have expanded uncertainties of 1.3 % for a high-end scanning spectroradiometer, 1.3 % for a high-end array spectroradiometer, and 3.3 % for a roughly adopted instrument based on commercially available components and an array spectroradiometer. The level of TOC measured with reference Brewer spectrophotometer #183 is of the order of 282 DU during the analysed day and in agreement with the results of the two former instruments.
Citation: Vaskuri, A., Kärhä, P., Egli, L., Gröbner, J., and Ikonen, E.: Monte Carlo method for determining uncertainty of total ozone derived from direct solar irradiance spectra: Application to Izaña results, Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2017-403, in review, 2018.
Anna Vaskuri et al.
Anna Vaskuri et al.
Anna Vaskuri et al.

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