Articles | Volume 17, issue 2
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

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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.