COZUV Third annual report. Coordinated Ozone and UV project. Reporting period: 01.01.1999-15.12.2001.

This report summarises the results from the first three years of the Norwegian Coordinated Ozone and UV project (COZUV). Results are reported on the following topics: 1. 3-dimensional atmospheric chemistry modelling 2. Dynamical modelling and ozone mini-hole climatology 3. Ozonesonde observations 4. DOAS observations of ozone and other stratospheric gases 5. Ozone lidar measurements 6. Analysis of ozone loss 7. Instrument development and measurements of UV radiation 8. Development of an instrument for measurements of actinic flux in the troposphere and stratosphere 9. UV modelling