Articles | Volume 17, issue 2
https://doi.org/10.5194/amt-17-827-2024
https://doi.org/10.5194/amt-17-827-2024
Research article
 | 
31 Jan 2024
Research article |  | 31 Jan 2024

Novel use of an adapted ultraviolet double monochromator for measurements of global and direct irradiance, ozone, and aerosol

Alexander Geddes, Ben Liley, Richard McKenzie, Michael Kotkamp, and Richard Querel

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Cited articles

Alexandrov, M. D., Marshak, A., Cairns, B., Lacis, A. A., and Carlson, B. E.: Automated cloud screening algorithm for MFRSR data, Geophys. Res. Lett., 31, L04118, https://doi.org/10.1029/2003GL019105, 2004. 
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Bernhard, G., Evans, R., Labow, G., and Oltmans, S.: Bias in Dobson total ozone measurements at high latitudes due to approximations in calculations of ozone absorption coefficients and air mass, J. Geophys. Res.-Atmos., 110, D10305, https://doi.org/10.1029/2004JD005559, 2005. 
Bernhard, G., McKenzie, R. L., Kotkamp, M., Wood, S., Booth, C. R., Ehramjian, J. C., Johnston, P., and Nichol, S. E.: Comparison of ultraviolet spectroradiometers in Antarctica, J. Geophys. Res., 113, D14310, https://doi.org/10.1029/2007JD009489, 2008. 
Brinksma, E., Bergwerff, J., Bodeker, G., Boersma, K., Boyd, I., Connor, B., De Haan, J., Hogervorst, W., Hovenier, J., and Parrish, A.: Validation of 3 years of ozone measurements over Network for the Detection of Stratospheric Change station Lauder, New Zealand, J. Geophys. Res.-Atmos., 105, 17291–17306, 2000. 
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Short summary
In this paper we describe a unique spectrometer that has been developed and tested over 10 years at Lauder, New Zealand. The spectrometer in question, UV2, makes alternating measurements of global UV and direct sun UV irradiance. After an assessment of the instrument performance, we compare the ozone and aerosol optical depth derived from UV2 to other independent measurements, finding excellent agreement suggesting that UV2 could supersede these measurements, particularly for ozone.