Measurement campaign at SBO - BOKU calibrates Brewer

The Brewer spectrophotometer is a sophisticated optical instrument. It allows near-simultaneous observations of total ozone column (TOC) and sulfur dioxide (SO2) between the instrument and the sun. It can also make high-resolution spectral measurements of ultraviolet (UV) radiation in the direct solar beam or across the entire sky.
More than 25 years ago, the University of Natural Resources and Applied Life Sciences Vienna (BOKU - Met) installed a Brewer at the Sonnblick Observatory. Since then, UV radiation has been measured. This time series is one of the longest in the world and meets the high quality requirements of the "Network for the Detectionof Atmospheric Composition Change (NDACC)". In order to meet these requirements, the brewer must be regularly checked and calibrated with the help of another tested brewer. For this purpose, a calibration measurement campaign will take place at the SBO starting 05.09.2021. During this time, two Brewers will be at the Sonnblick Observatory.

Calibration of the Brewer at the Sonnblick Observatory