1. Working Group-Ultraviolet Julian Gröbner and Mario Blumthaler

2. Overview of Activities 2010/2011 UV Session at IUGG, Melbourne European Metrology Research Programme: – Project ENV03-SolarUV approved for the period 2011-2014 Future UV Sessions planned for IRS 2012, Berlin DACA 13, Davos

3. UV Session M01, IUGG Highlighted presentations: Forgan, ‘Applications of array spectrometers for solar UV measurements’

4. UV Session M01, IUGG Highlighted presentations: B. Forgan, ‘Applications of array spectrometers for solar UV measurements’ P. Kiedron, et al., ‘Can ozone-cross sections be verified from ground based spectral solar ultraviolet irradiance measurements?’ Presentation in line with the WMO/IGACO-O3 activity on Absorption Cross Sections of Ozone (ACSO)

5. UV Session M01, IUGG Highlighted presentations: B. Forgan, ‘Applications of array spectrometers for solar UV measurements’ P. Kiedron, et al., ‘Can ozone-cross sections be verified from ground based spectral solar ultraviolet irradiance measurements?’ Blumthaler et al., ‘Case study about 3D-albedo effects on solar irradiance’

6. UV Session M01, IUGG Highlighted presentations: B. Forgan, ‘Applications of array spectrometers for solar UV measurements’ P. Kiedron, et al., ‘Can ozone-cross sections be verified from ground based spectral solar ultraviolet irradiance measurements?’ Blumthaler et al., ‘Case study about 3D-albedo effects on solar irradiance’ Watanabe et al.,‘Global Simulations of Surface UV in a Changing Climate‘

7. UV Session M01, IUGG Highlighted presentations: B. Forgan, ‘Applications of array spectrometers for solar UV measurements’ P. Kiedron, et al., ‘Can ozone-cross sections be verified from ground based spectral solar ultraviolet irradiance measurements?’ Blumthaler et al., ‘Case study about 3D-albedo effects on solar irradiance’ Watanabe et al.,‘Global Simulations of Surface UV in a Changing Climate‘ Additional Presentations on Health Effects of solar UV radiation: Webb et al., ‘Translating controlled UV Exposure Experiments into real life Experiences’ Deschamps, ‚Impact of UV and Climate Change on Skin Cancer incidence in Australia‘

8. EMRP-ENV03: Traceability of solar UV radiation Time frame: August 2011 to July 2014 Project aims are to improve solar UV spectroradiometry by: -New reference standards -Improved instruments -Well characterised array spectradiometers Activity is embedded in the European Metrology Research Programme (EMRP) of EURAMET and the EU (Call 2010)

9. EMRP-ENV03: Traceability of solar UV radiation Time frame: August 2011 to July 2014 -11 Partners, Budget 3.9 M€ -Involvement of the (European) UV Community, with participation by international Institutes

10. Future Activities IRS 2012 –UV Session with a special session on EMRP-ENV03 DACA 13 ‘Davos Atmosphere and Cryosphere Assembly’ –Workshop „Thematic UV Network“ - UVNet Outreach Activities of EMRP-ENV03 involving UV Scientists: –Technical Workshops, 2012, 2013, 2014 –UV Measurement Campaign Davos, May/June 2014