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Brewer users & groups

The Brewer is the standard instrument used in the World Meteorological Organization ozone monitoring network. There are over 228 Brewers, in more than 40 countries around the World, from the tropics to the Arctic and Antarctic. Ozone and UV measurement data is normally submitted to the database at the World Ozone & Ultraviolet Data Centre (WOUDC) in Toronto, Canada, but this role is also being taken up by the Regional Brewer Calibration Center–Europe (RBCC-E), at Agencia Estatal de Meteorología, Izaña Atmospheric Research Center, Tenerife, Spain.

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Brewer user group meetings were typicaly held every two years, and organised by Environment Canada on behalf of the World Meteorological Organisation (WMO). The 2009 meeting was held in Aosta, Italy, and the 2011 meeting took place in Beijing, China.

EUBREWNET

A new network to bring together Brewer operators, expertise, and data processing, was started in 2012. This is the ESSEM COST Action ES1207: A European Brewer Network (EUBREWNET), see:

http://www.cost.eu/domains_actions/essem/Actions/ES1207
http://www.eubrewnet.org/cost1207/

EUBREWNET will coordinate Brewer Spectrophotometer measurements of ozone, spectral UV and aerosol optical depth (AOD) in the UV within Europe, and unite the ozone, UV and AOD communities, through a formally managed European Brewer Network capable of delivering a consistent, spatially homogeneous European data resource, significant for the World Meteorological Organisation (WMO), the World Ozone and UV Data Centre (WOUDC), the International Ozone Commission (IO3C), the Intergovernmental Panel on Climate Change (IPCC), Global Monitoring for Environment and Security (GMES) and the ozone trend assessment panels. Around 50 Brewer Spectrophotometers are deployed in Europe, independently funded by national agencies, each duplicating effort to achieve separately best practice and accuracy. This COST Action is an ideal mechanism to remove this disparity, establish knowledge exchange and training, and open up a route to links with international agencies and other networks globally.

Participant group photo taken on the excursion to RBCC-E, Izaña Atmospheric Research Center, AEMET- Meteorological State Agency, Spain, as part of the COST Action ES1207 EUBREWNET Open Congress / 14th WMO-GAW Brewers Users Group Meeting, 27 March 2014.

Participant group photo taken on the excursion to RBCC-E, Izaña Atmospheric Research Center, AEMET- Meteorological State Agency, Spain, as part of the COST Action ES1207 EUBREWNET Open Congress / 14th WMO-GAW Brewers Users Group Meeting, 27 March 2014.

An open congress and Brewers operators course (14th WMO-GAW Brewers Users Group Meeting) was held in March 1014 in Tenerife, to bring users together and provide training for new operators.

Topics included:

  • Scientific presentations and technical issues of the Brewer
  • Instrument and data quality
  • The global Ozone monitoring network
  • Data processing advances and website developments
  • Exchange of information by those involved in the use of Brewers for UV and Ozone monitoring
  • Workshops covering practical setup of the Brewer, maintenance, and processing software use

The presentations are available at (as links on the timetable):

https://docs.google.com/document/d/1xaxWOkntotk7rB6PeRp0ZEYVJlWFPSnbJTrYQ_6DfrQ/edit

The videos of the presentations are available on this website (to be uploaded soon).

Held every four years is the Quadrennial Ozone Symposium. This last occurred in June 2008 at Tromsø, Norway, where also a Brewer tutorial combined with the conference was organised by Environment Canada.

There are also regular regional Brewer inter-comparisons, such as those organised at Huelva, and  Arosa in alternate years by the Regional Brewer Calibration Centre for Europe (RBCC-E). RBCC-E was established within the WMO Global Atmosphere watch (GAW) programme in 2003 at the Izaña Atmospheric Research Center. This is located in the Canary Islands and managed by the Agencia Estatal de Meteorología (AEMET) of Spain. RBCC-E maintains a triad of reference Brewer MkIII instruments, including the Regional Primary Reference Spectrometer (B156) and the Regional Travelling Reference Spectrophotometer (B185).

Brewer intercomparisons are held annually, alternating between Arosa in Switzerland and the El Arenosillo Sounding Station of the Instituto Nacional de Técnica Aeroespacial (INTA) at Huelva in the south of Spain. The aim is for a number of Brewers from invited organisations to collect simultaneous ozone data so that their calibration constants can be fine-tuned to give the same data values, when processed, as the reference instruments. This ensures high quality data across the Brewer network.