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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-2017-459
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
31 Jan 2018
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Atmospheric Measurement Techniques (AMT).
Wavelength calibration of Brewer spectrophotometer using a tuneable pulsed laser and implications to the Brewer ozone retrieval
Alberto Redondas1,2, Saulius Nevas3, Alberto Berjón4,2, Meelis-Mait Sildoja3, Sergio Fabian León-Luis1,2, Virgilio Carreño1,2, and Daniel Santana4,2 1Agencia Estatal de Meteorología, Izaña Atmospheric Research Center, Spain
2Regional Brewer Calibration Center for Europe, Izaña Atmospheric Research Center, Tenerife, Spain
3Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany
4University of La Laguna, Department of Industrial Engineering, S.C. de Tenerife, Spain
Abstract. In this contribution we present the wavelength calibration of the traveling reference Brewer spectrometer of the Regional Brewer Calibration Center for Europe (RBCC-E) at PTB in Braunschweig, Germany. The wavelength calibration is needed for the calculation of the ozone absorption coefficients used by the Brewer ozone algorithm. In order to validate the standard procedure for determining Brewer’s wavelength scale, a calibration has been performed by using a tuneable laser source at PTB in the framework of the EMRP project ENV59 ATMOZ Traceability for the total column ozone. Here we compare these results to those of the standard procedure for the wavelength calibration of the Brewer instrument. Such a comparison allows validating the standard methodology used for measuring the ozone absorption coefficient with respect to several assumptions. The results of the laser-based calibrations reproduces those obtained by the standard operational methodology and shows that there is a underestimation of 0.8 % due the use of the parametrized slit functions.
Citation: Redondas, A., Nevas, S., Berjón, A., Sildoja, M.-M., León-Luis, S. F., Carreño, V., and Santana, D.: Wavelength calibration of Brewer spectrophotometer using a tuneable pulsed laser and implications to the Brewer ozone retrieval, Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2017-459, in review, 2018.
Alberto Redondas et al.
Alberto Redondas et al.
Alberto Redondas et al.

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Short summary
We present the wavelength calibration of the traveling reference Brewer spectrometer of the Regional Brewer Calibration Center for Europe at PTB in Braunschweig. We compare these results to those of the standard procedure for the wavelength calibration of the Brewer. The results of the laser-based calibrations reproduces those obtained by the standard operational methodology and shows that there is a underestimation of 0.8 % due the use of the parametrized slit functions.
We present the wavelength calibration of the traveling reference Brewer spectrometer of the...
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