, are publicly available (see http://www.ndacc.org)

, We acknowledge the modeling groups for making their simulations available for this analysis, the joint IGBP-IGAC/WCRP-SPARC Chemistry-Climate Model Initiative (CCMI) for organizing and coordinating the model data analysis activity, and the British Atmospheric Data Center (BADC) for collecting and archiving the CCMI model output

, References

H. Akiyoshi, T. Nakamura, T. Miyasaka, M. Shiotani, and M. Suzuki, A nudged chemistry-climate model simulation of chemical constituent distribution at northern high-latitude stratosphere observed by SMILES and MLS during the 2009/2010 stratospheric sudden warming, stratospheric sudden warming, pp.1361-1380, 2009.
DOI : 10.1029/94GL01082

D. G. Andrews, J. R. Holton, and C. B. Leovy, Middle atmosphere dynamics Academic press, Physics, vol.40, issue.11, pp.7533-7545, 1987.

E. M. Bednarz, A. C. Maycock, N. L. Abraham, P. Braesicke, O. Dessens et al., Future Arctic ozone recovery: the importance of chemistry and dynamics, Atmospheric Chemistry and Physics, vol.16, pp.12-159, 2016.

A. W. Brewer, Evidence for a world circulation provided by the measurements of helium and water vapour distribution in the stratosphere, Quarterly Journal of the Royal Meteorological Society, vol.2, issue.326, pp.351-363, 2017.
DOI : 10.1098/rspa.1929.0034

M. D. Correa, S. Godin-beekmann, M. Haeffelin, S. Bekki, P. Saiag et al., Projected changes in clear-sky erythemal and vitamin D effective UV doses for Europe over the period 2006 to 2100, Photochemical & Photobiological Sciences, vol.116, issue.6, pp.1053-1064, 2006.
DOI : 10.1029/2011JD016074

URL : https://hal.archives-ouvertes.fr/hal-00838530

M. De-mazière, A. M. Thompson, M. J. Kurylo, J. D. Wild, G. Bernhard et al., Atmos. Chem. Phys. Discuss, vol.5194, issue.10, pp.2018-525

, c Author(s) 2018. CC BY 4.0 License. Network for the Detection of Atmospheric Composition Change (NDACC): history, status and perspectives, Atmospheric Chemistry and Physics, Manuscript under review for journal Atmos, pp.4935-4964, 2018.

M. Deushi and K. Shibata, Development of a Meteorological Research Institute Chemistry-Climate Model version 2 for the Study of Tropospheric and Stratospheric Chemistry, Papers in Meteorology and Geophysics, pp.1-46, 2011.
DOI : 10.2467/mripapers.62.1

S. Dhomse, D. Kinnison, M. P. Chipperfield, I. Cionni, M. Hegglin et al., Climate change projections using the IPSL-CM5 Earth System Model: from CMIP3 to CMIP5, Climate Dynamics, pp.2123-2165, 2013.

I. Erickson, D. J. Sulzberger, B. Zepp, R. G. , A. et al., Effects of stratospheric ozone depletion, solar UV radiation, and climate change on biogeochemical cycling: interactions and feedbacks, Photochemical & Photobiological Sciences, vol.35, issue.84, pp.127-148, 2015.
DOI : 10.1146/annurev.earth.35.031306.140057

V. Eyring, J. Lamarque, P. Hess, F. Arfeuille, K. Bowman et al., , pp.443-450, 1989.

R. R. Garcia, A. K. Smith, D. E. Kinnison, Á. Cámara, M. et al., Modification of the Gravity Wave Parameterization in the Whole Atmosphere Community Climate Model: Motivation and Results, Journal of the Atmospheric Sciences, vol.74, issue.1, pp.275-291, 2017.
DOI : 10.1175/JAS-D-16-0104.1

V. Gorshelev, A. Serdyuchenko, M. Weber, W. Chehade, and J. P. Burrows, High spectral resolution ozone absorption cross-sections, Atmos. Chem. Phys. Discuss

, c Author(s), Manuscript under review for journal Atmos. Chem. Phys. Discussion, issue.11, 2018.

L. J. Gray, J. Beer, M. Geller, J. D. Haigh, M. Lockwood et al., Reviews of Geophysics, vol.48, 2010.

J. Guth, B. Josse, V. Marécal, M. Joly, and P. Hamer, First implementation of secondary inorganic aerosols in the MOCAGE version R2. 15.0 chemistry transport model, Geoscientific Model Development, p.137, 2016.

D. Hader, H. D. Kumar, R. C. Smith, and R. C. Worrest, Effects of solar UV radiation on aquatic ecosystems and interactions with

M. I. Hegglin and T. G. Shepherd, Large climate-induced changes in ultraviolet index and stratosphere-to-troposphere ozone flux, Nature Geoscience, vol.109, issue.10, pp.687-691, 2009.
DOI : 10.5194/acp-9-1165-2009

M. F. Holick, J. Maclaughlin, M. Clark, S. Holick, J. Potts et al., Photosynthesis of previtamin D3 in human skin and the physiologic consequences, Science, vol.210, issue.4466, pp.203-205, 1980.
DOI : 10.1126/science.6251551

J. R. Holton, P. H. Haynes, M. E. Mcintyre, A. R. Douglass, R. B. Rood et al., , p.15

. Geophysics, , pp.403-439, 1995.

E. C. Hunke, W. H. Lipscomb, A. K. Turner, N. Jeffery, E. et al., CICE: the Los Alamos Sea Ice Model Documentation and Software User's Manual Version 4.1 LA-CC-06-012, T-3 Fluid Dynamics Group, 2010.

K. Imai, N. Manago, C. Mitsuda, Y. Naito, E. Nishimoto et al., Validation of ozone data from the Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES), Journal of Geophysical Research: Atmospheres, pp.5750-5769, 2013.
DOI : 10.1029/2009JA014898

, The Physical Science Basis Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, IPCC: Climate Change 2013, 2013.

F. Jégou, S. Godin-beekmann, M. Corrêa, C. Brogniez, F. Auriol et al.,

, Atmos. Chem. Phys. Discuss, vol.105194, pp.2018-525

, c Author(s), Manuscript under review for journal Atmos. Chem. Phys. Discussion, issue.11, 2018.

S. Kazadzis, N. Kouremeti, A. Bais, A. Kazantzidis, and C. Meleti, Aerosol forcing efficiency in the UVA region from spectral solar irradiance measurements at an urban environment, Annales Geophysicae, vol.27, issue.6, pp.2515-2522, 2009.
DOI : 10.5194/angeo-27-2515-2009

S. Kinne, D. O-'donnel, P. Stier, S. Kloster, K. Zhang et al., MAC-v1: A new global aerosol climatology for climate studies, Journal of Advances in Modeling Earth Systems, vol.118, issue.2, pp.704-740, 2013.
DOI : 10.5194/acp-6-613-2006

O. Kirner, R. Ruhnke, B. Sinnhuber, N. Ch4, and O. , O, and ODS, Atmosphere-Ocean, vol.53, issue.1, pp.140-152, 2015.
DOI : 10.5194/acp-5-445-2005

P. Koepke, A. Bais, D. Balis, M. Buchwitz, H. Backer et al., Comparison of Models Used for UV Index Calculations, Photochemistry and Photobiology, vol.1, issue.6, pp.657-662, 1998.
DOI : 10.1029/97JD00244

N. A. Krotkov, J. Herman, P. K. Bhartia, C. Seftor, A. Arola et al., OMI Surface UV Irradi-ance Algorithm, in OMI Algorithm Theoretical Basis Document, Volume III: Clouds, Aerosols, and Surface UV Irradiance, ATBD-OMI-03, 2002.

J. W. Krzy´scinkrzy´scin and S. Puchalski, Aerosol impact on the surface UV radiation from the ground-based measurements taken at Belsk, Poland, Journal of Geophysical Research: Atmospheres, vol.103, issue.16, pp.175-191, 1980.

K. Lamy, T. Portafaix, C. Brogniez, S. Godin-beekmann, H. Bencherif et al., Ultraviolet radiation modelling from ground-based and satellite measurements on Reunion Island, southern tropics, Atmospheric Chemistry and Physics, pp.227-246, 2018.

G. Madec, NEMO ocean engine, 2015.

S. Madronich, Analytic Formula for the Clear-sky UV Index, Photochemistry and Photobiology, vol.83, issue.6, pp.1537-1538, 2007.
DOI : 10.1562/0031-8655(2003)0780456SOBAUR2.0.CO2

S. Madronich, R. L. Mckenzie, L. O. Björn, C. , and M. M. , Changes in biologically active ultraviolet radiation reaching the Earth's CESM1 (WACCM), Journal of climate, vol.26, pp.7372-7391, 2013.

T. Masui, K. Matsumoto, Y. Hijioka, T. Kinoshita, T. Nozawa et al., An emission pathway for stabilization at 6 Wm2 radiative forcing, Climatic Change, vol.109, issue.59, 2011.

Y. Matsumura and H. N. Ananthaswamy, Toxic effects of ultraviolet radiation on the skin, Toxicology and Applied Pharmacology, vol.195, issue.3, pp.2018-525
DOI : 10.1016/j.taap.2003.08.019

, c Author(s), Manuscript under review for journal Atmos. Chem. Phys. Discussion, issue.11, 2018.

B. Mayer, A. Kylling, S. Madronich, and G. Seckmeyer, Enhanced absorption of UV radiation due to multiple scattering in clouds: Experimental evidence and theoretical explanation, Journal of Geophysical Research: Atmospheres, vol.31, issue.108, pp.31-241, 1998.
DOI : 10.1175/1520-0450(1992)031<0212:SMOSUB>2.0.CO;2

M. Kinlay, A. F. Diffey, and B. L. , A reference action spectrum for ultraviolet induced erythema in human skin, CIE J, vol.6, pp.17-22, 1987.

M. Meftah, D. Bolsée, L. Damé, A. Hauchecorne, N. Pereira et al., Solar Irradiance from 165 to 400 nm in 2008 and UV Variations in Three Spectral Bands During Solar Cycle 24, Solar Physics, vol.570, issue.10, pp.3527-3547, 2016.
DOI : 10.1051/0004-6361/201423628

URL : https://hal.archives-ouvertes.fr/insu-01383582

M. Meinshausen, S. J. Smith, K. Calvin, J. S. Daniel, M. L. Kainuma et al., The RCP greenhouse gas concentrations and their extensions from 1765 to 2300, Climatic Change, vol.41, issue.7, 2011.
DOI : 10.1021/es061710t

M. Michou, D. Saint-martin, H. Teyssedre, A. Alias, F. Karcher et al., A new version of the CNRM Chemistry-Climate Model, CNRM-CCM: description and improvements from the CCMVal-2 simulations, Geoscientific Model Development, pp.873-900, 2011.

A. Molod, L. Takacs, M. Suarez, and J. Bacmeister, Development of the GEOS-5 atmospheric general circulation model: Evolution from MERRA to MERRA2, p.1339, 2015.

O. Morgenstern, P. Braesicke, M. M. Hurwitz, F. M. O-'connor, A. C. Bushell et al., The World Avoided by the Montreal Protocol, Geophysical Research Letters, vol.105, issue.D20, 2008.
DOI : 10.1029/92JD01029

O. Morgenstern, P. Braesicke, F. M. O-'connor, A. C. Bushell, C. E. Johnson et al., Evaluation of the new UKCA climate-composition model ? Part 1: The stratosphere, Geoscientific Model Development, pp.43-57, 2009.

O. Morgenstern, M. I. Hegglin, E. Rozanov, F. M. O-'connor, N. L. Abraham et al., Ozone sensitivity to varying greenhouse gases and ozone-depleting substances in CCMI-1 simulations, CCMI-1 simulations, pp.1091-1114, 1091.
DOI : 10.5194/acp-18-1091-2018-supplement

O. Connor, F. Johnson, C. Morgenstern, O. Abraham, N. Braesicke et al., Evaluation of the new UKCA climate-composition model?Part 2: The Troposphere, pp.41-91, 2014.

, Atmos. Chem. Phys. Discuss, vol.105194, pp.2018-525

, c Author(s), Manuscript under review for journal Atmos. Chem. Phys. Discussion, issue.11, 2018.

G. Pitari, V. Aquila, B. Kravitz, A. Robock, S. Watanabe et al., Stratospheric ozone response to sulfate geoengineering: Results from the Geoengineering Model Intercomparison Project (GeoMIP), Journal of Geophysical Research: Atmospheres, pp.2629-2653, 2014.
DOI : 10.5194/acp-13-2063-2013

V. Poulain, S. Bekki, M. Marchand, M. Chipperfield, M. Khodri et al., , pp.5887-5902, 2015.

L. E. Revell, G. E. Bodeker, P. E. Huck, B. E. Williamson, R. et al., The sensitivity of stratospheric ozone changes through the 21st century to N2O and CH4, Atmospheric Chemistry and Physics, vol.12, pp.11-309, 2012.

D. Rind, R. Suozzo, N. K. Balachandran, and M. J. Prather, Climate, Journal of the Atmospheric Sciences, vol.47, issue.4, pp.475-494, 1990.
DOI : 10.1175/1520-0469(1990)047<0475:CCATMA>2.0.CO;2

URL : https://hal.archives-ouvertes.fr/hal-00328500

D. Rind, J. Lerner, M. Prather, and C. Mclinden, Stratospheric Circulation and Tracer, Response to Alternative Doubled CO2 Climate Depictions, 2001.

J. Scinocca, N. Mcfarlane, M. Lazare, J. Li, and D. Plummer, The CCCma third generation AGCM and its extension into the middle atmosphere, Atmospheric Chemistry and Physics Discussions, vol.8, issue.2, pp.7055-7074, 2008.
DOI : 10.5194/acpd-8-7883-2008

URL : https://hal.archives-ouvertes.fr/hal-00304124

T. Sekiya and K. Sudo, Role of meteorological variability in global tropospheric ozone during, Journal of Geophysical Research: Atmospheres, vol.117, 1970.

A. Serdyuchenko, V. Gorshelev, M. Weber, W. Chehade, and J. Burrows, High spectral resolution ozone absorption cross-sections?Part 2: Temperature dependence, Atmospheric Measurement Techniques Discussions, 2014.

T. G. Shepherd, Dynamics, stratospheric ozone, and climate change, Atmosphere-Ocean, pp.117-138, 2008.

R. C. Smith and J. J. Cullen, Effects of UV radiation on phytoplankton, Reviews of Geophysics, vol.11, issue.2, pp.1211-1223, 1995.
DOI : 10.1021/es60127a013

S. Solomon, R. Portmann, R. Sanders, J. Daniel, W. Madsen et al., On the role of nitrogen dioxide in the absorption of solar radiation, Journal of Geophysical Research: Atmospheres, vol.102, issue.D10, pp.12-047, 1999.
DOI : 10.1029/97JD01781

S. Solomon, D. Kinnison, J. Bandoro, and R. Garcia, Simulation of polar ozone depletion: An update, Journal of Geophysical Research: Atmospheres, vol.13, issue.D6, pp.7958-7974, 2015.
DOI : 10.5194/acp-13-3909-2013

S. Solomon, D. J. Ivy, D. Kinnison, M. J. Mills, R. R. Neely et al., Emergence of healing in the Antarctic ozone layer, Science, vol.40, issue.6296, 2016.
DOI : 10.1016/j.jvolgeores.2016.02.027

, Atmos. Chem. Phys. Discuss, vol.105194, pp.2018-525

, c Author(s), Manuscript under review for journal Atmos. Chem. Phys. Discussion, issue.11, 2018.

K. A. Stone, O. Morgenstern, D. J. Karoly, A. R. Klekociuk, W. J. French et al., Evaluation of the ACCESS ??? chemistry???climate model for the Southern Hemisphere, Atmospheric Chemistry and Physics, vol.16, issue.4, pp.2401-2415, 2016.
DOI : 10.1256/qj.02.133

K. Sudo, M. Takahashi, J. Kurokawa, and H. Akimoto, CHASER: A global chemical model of the troposphere 1. Model description, Journal of Geophysical Research: Atmospheres, vol.100, issue.D17, 2002.
DOI : 10.1029/95JD00370

V. Vaida, H. G. Kjaergaard, P. E. Hintze, and D. J. Donaldson, Photolysis of Sulfuric Acid Vapor by Visible Solar Radiation, Science, vol.299, issue.5612, pp.1566-1568, 1566.
DOI : 10.1126/science.1079297

D. P. Van-vuuren, J. Edmonds, M. Kainuma, K. Riahi, A. Thomson et al., The representative concentration pathways: an overview, Climatic Change, 2011.

, Atmos. Chem. Phys. Discuss, vol.105194, pp.2018-525

, c Author(s), Manuscript under review for journal Atmos. Chem. Phys. Discussion, issue.11, 2018.