Home About the Brewer

About the Brewer

The Brewer Spectrophotometer is a unique instrument designed for the automated measurement of Ozone as part of the Global Atmosphere Watch (GAW) programme of the World Meteorological Organisation (WMO).

The Brewer was designed by Environment Canada specifically for operating automatically with high accuracy over long periods of time, in all climates and environments from the tropics to Antarctica. Later versions of the Brewer can also make spectral scans of the ultraviolet (UV) region of solar radiation from the sun and sky.

There have been several versions of the Brewer over the years, but the only model now in production is the MkIII ‘double’ Brewer because of its superior UV measurement capability for UVA, UVB, UVE (Erythemal) and UVI (Index).

There is a network of instruments around the world, from deserts to the Antarctic, providing information to the World Ozone and Ultraviolet Radiation Data Centre (WOUDC), which is operated by Environment Canada and located in Toronto.

The Kipp & Zonen Brewer MkIII Spectrophotometer is the only instrument in current production sanctioned by the World Meteorological Organisation (WMO) for making Total Ozone Column (TOC) measurements.

More information about the Brewer can be found in the pages of this website by clicking though the menu.

One of the Brewers participating in the intercomparison in Arosa, July 2014

Photo taken at Lichtklimatisches Observatorium LKO (Arosa, Switzerland) 2014