The ozone layer protects humans from the adverse effects of ultraviolet radiation. EMRP project Traceability for atmospheric total column ozone (ENV59 atmoz) will characterise and calibrate two instruments used to make ground-based measurements of atmospheric ozone, disseminate improved ozone measurements with known uncertainties and eventually assist in the development of a replacement for the ageing instrument.
A final workshop will be organised to present and disseminate work from the project to the European Community for total column ozone monitoring (RBCC-E : Regional Brewer Calibration Center - Europe). In parallel there will be an intercomparison of spectroradiometers for measuring total column ozone, of which several were calibrated in the project and which resulted in defined and lower uncertainties than previously achieved.