Participation in the Brewer Ozone Spectrophotometer/Metrology Open Workshop






IPMA, Ponta Delgada, Sao Miguel, Azores, Portugal 17th to 20th May 2016


The RBCC-E (Regional Brewer Calibration Center for Europe), managed by the CIAI (Izaña Atmospheric Research Center) of the State Meteorological Agency of Spain (AEMET) and the “Intelligent Sensor” Research Group of the University of La Laguna (ULL), has participated in the “Brewer Ozone Spectrophotometer/Metrology open workshop” organized by EUBREWNET (COST Action ES1207),  ATMOZ (Traceability for atmospheric total column ozone, European Metrology Research Programme ENV59) y WMO-GAW (World Meteorological Organization – Global Atmosphere Watch), which was held in Ponta Delgada (Portugal) from 17th to 20th May 2016. More than 50 researchers from 13 countries of the European Union, the United States and Canada, participated in this meeting.

The Brewer Ozone Spectrophotometer is widely used throughout the world for ground based total ozone column (TOC) measurements and can also provide solar spectral UV, Aerosol Optical Depth (AOD), NO2 and SO2 data, plus ozone vertical profiles from Umkehr measurements. The EUBREWNET COST action is an european project which aims to establish a coherent network of Brewer Spectrophotometer monitoring stations throughout Europe and to collaborate with other regional networks in order to harmonise operations and develop approaches, practices and protocols to achieve consistency in quality control, quality assurance and coordinated operations.

The main objective of the European Metrology Research Programme (EMRP) funded project ATMOZ is to provide traceable total column ozone measurements from Dobson, Brewer and DOAS type spectroradiometers, including a comprehensive uncertainty budget.

The workshop focused on the operational, scientific and technical issues of the Brewer instrument and its role in the global ozone, aerosol and UV monitoring networks, as well as the development of new instruments and characterisation methods. The workshop also provided an opportunity for formal and informal exchange of information by those involved in the use of Brewer UV and Ozone spectrophotometers, as well as others who have a general interest in atmospheric spectroscopy in the visible and ultraviolet.

AEMET and ULL have an outstanding participation in both EUBREWNET network, managing the project database and ozone calibration center, as in the ATMOZ project. This work is shown in the contributions of the group to the Workshop:


●      “Wavelength characterisation of Brewer determined in the laboratory” Alberto Redondas1

●      “Temperature characterisation of Brewer determined in the laboratory” Alberto Berjón2

●      “Ozone retrieval and the corresponding uncertainties with the Pandora instrument” Alberto Redondas1

●      “Brewer direct irradiance measurements: polarization effects and model simulation” Virgilio Carreño1

●      “Ozone calibration during the 10th intercomparison RBCC-E” Alberto Redondas1

●      “RBCC-E triad” Sergio Fabián León Luis1

●      “Dead time effect on the Brewer measurements” Ilias Fountoulakis4 & Alberto Redondas1

●      “IASI Validation” Niobe Peinando3 & Omaira García1

●      “OMI O3 Validation” Javier Lopez Solano2

●      “Eubrewnet product comparison” Alberto Redondas1

●      “Eubrewnet AOD calculation” Javier Lopez Solano2

●      “Eubrewnet Web” Bentorey Hernandez2

●      “Eubrewnet Configuration Interface” Bentorey Hernandez2

●      “Python Processing library update” Alberto Berjón2 & Manuel Rodríguez Valido2

●      “Eubrewnet QA/QC” Bentorey Hernandez2

●      “Eubrewnet UV configuration” Sergio Fabián León Luis1

●      “Eubrewnet AOD configuration” Javier Lopez Solano2

●      “Hands on satellite validation using MATLAB/Octave” Javier Lopez Solano2

●      “Hands on QA/QC” Bentorey Hernández2

●      “Hands on Brewer temperature dependence : Eubrewnet Using R / Python” Alberto Berjón2

●      “Hands on UV processing” Sergio Fabián León Luis1




1. Izaña Atmospheric Research Centre, State Meteorological Agency of Spain.

2. Department of Industrial Engineering, University of La Laguna, Spain.

3. Earth Physics and Thermodynamics Dept, Climatology from Satellites Group, University of Valencia, Spain.

4. School of Physics, Aristotle University of Thessaloniki, Greece.



Participants at the ATMOZ meeting follow the explanations of Diamantino Henriques at the Observatorio Alfonso Chaves, IPMA (Instituto Portugués del Mar y la Atmósfera).





The workshop was covered by the local media.


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