K. Lamy, T. Portafaix, B. Josse, C. Brogniez, S. Godin-beekmann et al., Clear-sky ultraviolet radiation modelling using output from the Chemistry Climate Model Initiative, Atmos. Chem. Phys, vol.19, pp.10087-10110, 2019.
URL : https://hal.archives-ouvertes.fr/insu-02265790

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, Atmos. Chem. Phys, vol.18, pp.227-246, 2018.
URL : https://hal.archives-ouvertes.fr/hal-01575229

A. M. Toihir, T. Portafaix, V. Sivakumar, H. Bencherif, A. Pazmiño et al., Variability and trend in ozone over the southern tropics and subtropics, Ann. Geophys, vol.36, pp.381-404, 2018.
URL : https://hal.archives-ouvertes.fr/hal-01753340

K. Lamy, T. Portafaix, B. Josse, C. Brogniez, S. Godin-beekmann et al., Atmospheric Chemistry and Physics Discussions, European Geosciences Union, 2018.

J. M. Cadet, H. Bencherif, T. Portafaix, K. Lamy, K. Ncongwane et al., Comparison of Ground-Based and Satellite-Derived Solar UV Index Levels at Six South African Sites, International journal of environmental research and public health, vol.14, issue.11, p.1384, 2017.
URL : https://hal.archives-ouvertes.fr/hal-01646295

R. /-venkataraman-sivakumar, H. Jimmy, N. Bencherif, and . Portafaix, Use of the TREND RUN model to deduce trends in South African Weather Service (SAWS) atmospheric data: Case study over Addo (33.568°S, 25.692°E) Eastern Cape, South Africa, Journal of Neutral Atmosphere, pp.51-58, 2017.

L. Vaz-peres, H. Bencherif, N. Mbatha, A. Passaglia-schuch, A. M. Toihir et al., Measurements of the total ozone column using a Brewer spectrophotometer and TOMS and OMI satellite instruments over the Southern Space Observatory in Brazil, Ann. Geophys, vol.35, pp.25-37, 2017.
URL : https://hal.archives-ouvertes.fr/hal-01446925

V. Duflot, J. Baray, G. Payen, N. Marquestaut, F. Posny et al., Tropospheric ozone profiles by DIAL at Maïdo Observatory (Reunion Island): system description, instrumental performance and result comparison with ozone external data set, Atmos. Meas. Tech, vol.10, pp.3359-3373, 2017.

N. Bègue, D. Vignelles, G. Berthet, T. Portafaix, G. Payen et al., Long-range transport of stratospheric aerosols in the Southern Hemisphere following the 2015 Calbuco eruption, Atmos. Chem. Phys, vol.17, pp.15019-15036, 2017.

P. Tulet, A. Di-muro, A. Colomb, C. Denjean, V. Duflot et al., First results of the Piton de la Fournaise STRAP 2015 experiment: multidisciplinary tracking of a volcanic gas and aerosol plume, Atmos. Chem. Phys, vol.17, pp.5355-5378, 2017.
URL : https://hal.archives-ouvertes.fr/hal-01448880

D. Hubert, J. Lambert, T. Verhoelst, J. Granville, A. Keppens et al., Ground-based assessment of the bias and long-term stability of 14 limb and occultation ozone profile data records, Atmos. Meas. Tech, vol.9, pp.2497-2534, 2016.
URL : https://hal.archives-ouvertes.fr/insu-01175649

S. Fernandez, R. Rüfenacht, N. Kämpfer, T. Portafaix, F. Posny et al., Results from the validation campaign of the ozone radiometer GROMOS-C at the NDACC station of Réunion island, Atmos. Chem. Phys, vol.16, pp.7531-7543, 2016.

A. M. Toihir, H. Bencherif, V. Sivakumar, L. E. Amraoui, T. Portafaix et al., Comparison of total column ozone obtained by the IASI-MetOp satellite with ground-based and OMI satellite observations in the southern tropics and subtropics, Ann. Geophys, vol.33, pp.1135-1146, 2015.

M. Pastel, J. Pommereau, F. Goutail, A. Richter, A. Pazmiño et al., Construction of merged satellite total O3 and NO2 time series in the tropics for trend studies and evaluation by comparison to NDACC SAOZ measurement, Atmos. Meas. Tech, vol.7, pp.3337-3354, 2014.

,. Baray, Y. Courcoux, P. Keckhut, T. Portafaix, P. Tulet et al., Maïdo observatory: a new high-altitude station facility at Reunion Island (21? S, 55? E) for longterm atmospheric remote sensing and in situ measurements, Atmos. Meas. Tech, vol.6, pp.2865-2877, 2013.

/. Bencherif, H. , L. E. Amraoui, N. Mzé, A. Pazmino et al., Begue -Total ozone variability and trends estimates from ground based and satellite observations in the southern subtropics, 2012.

H. Bencherif, L. E. Amraour, G. Kirgis, J. Leclair-de-bellevue, and T. Portafaix, Analysis of a rapid increase of stratospheric ozone during late austral summer 2008 over Kerguelen (49.4°S, 70.3°E), J. Atmospheric Chemestry an Physics, vol.11, pp.1-11, 2011.
URL : https://hal.archives-ouvertes.fr/hal-00505577

/. Sivakumar, V. , T. Portafaix, H. Bencherif, S. Godin-beekmann et al., Stratospheric ozone climatology and variability over a southern subtropical site: Reunion Island (21°S, 55°E), Annales Geophysicae, vol.25, pp.2321-2334, 2007.
URL : https://hal.archives-ouvertes.fr/hal-00243141

/. Bencherif, H. , R. Diab, T. Portafaix, B. Morel et al., Temperature climatology and trend estimates in the UTLS region as observed over a southern subtropical site, J. Atmos. Chem. Phys, pp.1301-1320, 2006.
URL : https://hal.archives-ouvertes.fr/hal-00328465

J. Baray, S. Leveau, J. Baldy, P. Jouzel, G. Keckhut et al., An instrumented station for the survey of ozone and climate change in the southern tropics, J. Environ. Monit, 2006.
URL : https://hal.archives-ouvertes.fr/hal-00145015

T. Portafaix, H. Bencherif, D. Faduilhe, P. Keckhut, and S. Godin-beckmann, Inter-annual variability and trend analyses in the southern tropical UT/LS: Reunion Island (20.8°S, 55.5°E), pp.102-111, 2006.

B. Morel, H. Bencherif, P. Keckhut, T. Portafaix, A. Hauchecorne et al., Fine-scale study of a thick stratospheric ozone lamina at the edge of the southern subtropical barrier.Part II: Results from the COupled Msdol Mimosa Interactive Dynamics model, J. Geophys. Res, 2005.
URL : https://hal.archives-ouvertes.fr/hal-01356763

H. Bencherif, T. Portafaix, J. L. Baray, B. Morel, S. Baldy et al., Hauchecorne and A. Keckut LIDAR observations of lower stratospheric aerosols over South Africa linked to large scale transport across the southern subtropical barrier, Journal of Atmospheric and Solar-Terrestrial Physics, vol.65, pp.707-715, 2004.

T. Portafaix, B. Morel, H. Bencherif, S. Godin-beekmann, S. Baldy et al., Fine scale study of a thick stratospheric ozone lamina at the edge of the southern subtropical barrier, J. Geophys. Res, vol.108, pp.4196-4205, 2003.
URL : https://hal.archives-ouvertes.fr/hal-01356763

T. Portafaix, Un nouveau lidar ozone DIAL à la Réunion, Bull. de liaison du réseau de surveillance de la stratosphère (NDSC), vol.8, pp.12-13, 2000.

P. Keckhut, S. Godin, F. Goutail, A. Sarkissian, A. Hauchecorne et al., Détection des changements de la stratosphère, pp.199-218, 1999.

T. Portafaix, S. Baldy, H. Bencherif, and E. S. Godin, Climatology, inter annual variability and trends of stratospheric ozone over Reunion Island, Stratospheric ozone 1999 report, pp.645-649, 1999.

?. Conférences, congrès et colloques à communication (Conférences internationales à comité de lecture et actes

T. Portafaix and U. Network, MESO Workshop, 2019.

K. Lamy, T. Portafaix, J. B. Forestier, S. Rakotoniaina, and V. Amélie, Colloque Geosciences, 2019.

O. Delage, T. Portafaix, H. Bencherif, G. Guimbretiere, R. Tato et al., Multi-scale variability analysis of time series in geophysics by using the empirical mode decomposition, 16th SAGA international Conference, 2019.
URL : https://hal.archives-ouvertes.fr/hal-02363170

J. M. Cadet, T. Portafaix, H. Bencherif, C. Brogniez, and N. Sébastien, Inter-comparison campaign of solar UVR instruments at Réunion Island (21.0°S, 5°E): findings and recommendations. European Conference on solar UV Monitoring, vol.55, 2018.

D. Hubert, J. Lambert, T. Verhoelst, A. Keppens, J. Granville et al., AGU 2017 Fall Meeting, 2017.

S. Khaykin, S. Godin-beekmann, P. Keckhut, A. Hauchecorne, and T. Portafaix, Recent changes in stratospheric aerosol budget from ground-based and satellite observations, EGU General Assembly, pp.2017-14276, 2017.
URL : https://hal.archives-ouvertes.fr/insu-01516232

T. Portafaix, Evolution des rayonnements UV dans les tropiques de l'hémisphère sud, 2017.

K. Lamy, T. Béatrice-josse, H. Portafaix, S. Bencherif, and . Godin-beekmann, Ultraviolet Radiation evolution during the 21st century, Chemistry-Climate Model Initiative Science Workshop, 2017.
URL : https://hal.archives-ouvertes.fr/hal-01648231

T. Portafaix, H. Mohamed-toihir-abdoulwahab, S. Bencherif, V. Godin-beekmann, and . Sivakumar, Influence of the dynamical activity on the inter-annual variability of ozone in the tropics, Quadrennial Ozone Symposium, 2016.
URL : https://hal.archives-ouvertes.fr/insu-01355411

F. Posny, B. J. Johnson, J. Metzger, V. Duflot, and T. Portafaix, La Reunion Island (21 S, 55.5 E) SHADOZ/NDACC station: First re-processed ozonesonde data and comparisons with lidar measurements at the Maïdo Observatory, Quadriennal Ozone Symposium, 2016.
URL : https://hal.archives-ouvertes.fr/hal-01447020

K. Lamy, H. Thierry-portafaix, S. Bencherif, C. Godin-beekmann, and . Brogniez, Ultraviolet Radiation modeling from ground based and satellite measurements of Ozone over Réunion Island, Quadrennial Ozone Symposium, pp.2016-81, 2016.

J. P. Pommereau, A. Frihi, F. Goutail, A. Pazmino, and S. Bekki, Origin of Satellites and G-B SAOZ/NDACC total ozone measurement differences in the tropics, Quadrennial Ozone Symposium, pp.2016-221, 2016.
URL : https://hal.archives-ouvertes.fr/insu-01355651

L. Vaz-peres, A. Mohamed-toihir-abdoulwahab, N. Passaglia-schuch, N. Mbatha, and . Bègue, Variability and Trend of Total Ozone Column from Brewer Spectrophotometer and Satellite Measurements Over South of Brazil, Quadriennal Ozone Symposium, 2016.
URL : https://hal.archives-ouvertes.fr/hal-01767054

A. M. Toihir, T. Portafaix, V. Sivakumar, H. Bencherif, N. Mbatha et al., Variability and trend of ozone over the southern tropics and subtropics, pp.2016-2021, 2016.

P. G. Van-zyl, J. P. Beukes, J. Swartz, C. Galy-lacaux, C. Labuschagne et al., Long-term measurements of atmospheric inorganic gaseous species at Cape Point, p.3, 2016.

T. Portafaix, S. Godin-beekmann, G. Payen, M. De-mazière, B. Langerock et al., Ozone profiles obtained by DIAL technique at Maïdo Observatory in La Reunion Island: comparisons with ECC ozone-sondes, ground-based FTIR spectrometer and microwave radiometer measurements, ILRC, 2015.

F. Jégou, G. Berthet, T. Lurton, D. Vignelles, N. Bègue et al., Quantifying the impact of moderate volcanic eruptions on the stratosphere, 2015.

G. Godin-beekmann, A. Pazmiño, S. Khaykin, I. Petropavloskikh, D. Hubert et al., , vol.IUGG, 2015.

J. P. Cammas, C. Barthe, ·. E. Blanc, ·. Brogniez, ·. Colomb et al.,

·. J. Ramonet, ·. Sciare, ·. Sellegri, ·. Tulet, ·. Vimeux et al., A Climate Observatory in South West Indian Ocean: The Maïdo Observatory in La Réunion. Current achievements and Future Prospects, 2015.

A. M. Toihir, V. Sivakumar, H. Bencherif, and T. Portafaix, Ozone climatology obtained by a combination of MLS/AURA and SHADOZ osonesondes profiles over the souther tropic and subtropic, Proc. 2015 EUMETSAT Meteorological Satellite Conference, 2015.

T. Portafaix, H. Bencherif, S. Godin-beekmann, N. Bègue, S. Beaupère et al., Portafaix and H. Bencherif : Study on variability and trend of Total Column Ozone (TCO) obtained from combined satellite (TOMS and OMI) measurements over the southern subtropic, Proc. SASAS, 2014.

H. Bencherif, L. E. Amraoui, N. Mzé, A. Pazmino, T. Portafaix et al., Total ozone variability and trend estimates from groundbased and satellite observations in the southern subtropics, QOS, pp.27-31, 2012.
URL : https://hal.archives-ouvertes.fr/hal-00732609

I. Ionov, F. Goutail, A. Pazmino, J. P. Pommereau, E. Kyro et al., Comparison of satellite total ozone and NO2 data with ground-based SAOZ network, 2008.

G. Kirgis, T. Portafaix, H. Bencherif, S. Baldy, S. Godin-beekmann et al., Discrimination of air masses by Multivariate Analysis Applied to Barrier detection, J of SCOUT O3, 2007.

G. Kirgis, T. Portafaix, H. Bencherif, S. Baldy, S. Godin-beekmann et al., Evaluation of Transport across Dynamical Barriers by Multivariate Analysis, Proceedings of RiiS-2007, 2007.

D. Ionov, F. Goutail, J. P. Pommereau, T. Portafaix, and G. Held, Total NO2 in the tropics from satellites and ground-based SAOZ measurements, Reunion Island International Symposium, 2007.

M. Pastel, F. Goutail, A. Pazmiño, J. P. Pommereau, G. Held et al.,

, Long-term evolution of stratospheric NO2 in the tropics, Reunion Island International Symposium, 2007.

G. Kirgis, T. Portafaix, H. Bencherif, S. Baldy, and S. Godin-beekmann, A statistical approach to study isentropic transport events in the lower stratosphere nearby the southern subtropical barrier, 2006.

T. Portafaix, G. Kirgis, S. Godin, H. Bencherif, S. Baldy et al., A state of the southern subtropical barrier during the 2003 austral winter, deduced from Ertel potential vorticity and chemical tracer measurements, Proc. of SPARC General Assembly, pp.125-152, 2004.

T. Portafaix, H. Bencherif, and J. Leveau, Study of interannual variability and trends of tropospheric and stratospheric temperature fields obtained from 20 years of soundings over South Africa, EMS, vol.1, p.358, 2004.

T. Portafaix, S. Baldy, H. Bencherif, J. L. Baray, S. Godin et al., Modelling of impact of planetary-scale waves on meridional mxing at the edges of the tropical stratospheric reservoir, European Geophysical Society/American Geophysical Union joint assembly, 2003.

J. L. Baray, T. Portafaix, V. Sivakumar, and S. Baldy, Detection of tropopause as a dynamical barrier during large scale subtropical tropopause fold, Proc. Sixth European Symposium on Ozone, 1999.

T. Portafaix, S. Baldy, H. Bencherif, S. Godin, and B. Morel, Variability of the southern stratospheric subtropical barrier in, European Geophysical Society general assembly, 1999.

A. Réchou, J. Baray, S. Baldy, and T. Portafaix, Influence of deep convection on the injection of ozone into the troposphere (stratosphere-troposphere exchange), 21st ILRC -Quebec city, Canada, 2002.

T. Portafaix, S. Baldy, S. Godin, A. Hauchecorne, and H. Bencherif, A case study of isentropic exchange through the southern dynamical barrier limiting the tropical stratosphere, Proc. 2rd SPARC General Assembly, 2000.

H. Bencherif, T. Portafaix, B. Morel, J. L. Baray, S. Baldy et al., A case study of sporadic transport across the southern boundary of the tropical stratospheric reservoir, Proc. 2rd SPARC General Assembly, 2000.

F. Posny, T. Portafaix, J. L. Baray, S. Baldy, and J. Leveau, Measurement of vertical ozone distributions by radiosoundings at Reunion Island (southern tropics), Proc. Spring Meeting AGU, 2000.

L. Denis, T. Portafaix, J. P. Pommereau, F. Goutail, A. Sarkissian et al., SAOZ total O3 and NO2 at the southern tropics and equator, Proc. 3rd Europ. Symposium on Polar Ozone, pp.458-462, 1996.

F. Goutail, J. P. Pommereau, L. Denis, and T. Portafaix, Total ozone and NO2 at the southern Tropics and Equator, Proc. 1st SPARC General Assembly, 1996.

L. Texte,

A. F. Bais, K. Tourpali, A. Kazantzidis, H. Akiyoshi, S. Bekki et al., Projections of UV radiation changes in the 21st century: impact of ozone recovery and cloud effects, Atmospheric Chemistry and Physics, vol.11, pp.7533-7545, 2011.
URL : https://hal.archives-ouvertes.fr/hal-00583951

A. F. Bais, R. L. Mckenzie, G. Bernhard, P. J. Aucamp, M. Ilyas et al., Ozone depletion and climate change : Impacts on UV radiation, Photochem. Photobiol. Sci, vol.14, pp.19-52, 2015.

A. F. Bais, R. L. Mckenzie, G. Bernhard, P. J. Aucamp, M. Ilyas et al., Ozone depletion and climate change : impacts on UV radiation, Photochem. Photobiol. Sci, vol.14, pp.19-52, 2015.

M. P. Baldwin and T. J. Dunkerton, Propagation of the Arctic Oscillation from the stratosphere to the troposphere, J. Geophys. Res, vol.104, 1999.

F. Borchi and A. Marenco, Discrimination of air masses near the extratropical tropopause by multivariate analyses from MOZAIC data, Atmos. Environ, vol.36, pp.576-579, 2002.

C. Brogniez, F. Auriol, C. Deroo, A. Arola, J. Kujanpää et al., Validation of satellite-based noontime UVI with NDACC ground-based instruments : influence of topography, environment and satellite overpass time, Atmospheric Chemistry and Physics, vol.16, p.74, 2016.

A. H. Butler, J. S. Daniel, R. W. Portmann, A. R. Ravishankara, P. J. Young et al., Diverse policy implications for future ozone and surface UV in a changing climate, Environmental Research Letters, vol.11, pp.157-184, 2014.

M. Chipperfield, S. Dhomse, and W. Feng, Quantifying the ozone and ultraviolet benefits already achieved by the Montreal Protocol, Nat Commun, vol.6, p.7233, 2015.

W. J. Collins, J. Lamarque, M. Schulz, O. Boucher, V. Eyring et al., AerChemMIP : quantifying the effects of chemistry and aerosols in CMIP6, Geoscientific Model Development, vol.10, pp.585-607, 2017.

M. Chirkov, G. P. Stiller, A. Laeng, S. Kellmann, T. Von-clarmann et al., Global HCFC-22 measurements with MIPAS: retrieval, validation, global distribution and its evolution over, Atmos. Chem. Phys, vol.16, pp.3345-3368, 2005.

M. D. Corrêa, 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, Photochem. Photobiol. Sci, vol.12, pp.1053-1064, 2013.

M. Dobber, R. Voors, R. Dirksen, Q. Kleipool, and P. Levelt, The high-resolution solar reference spectrum between 250 and 550 nm and its application to measurements with the Ozone Monitoring Instrument, Solar Physics, vol.249, pp.281-291, 2008.

A. Engel, T. Möbius, H. Bönisch, U. Schmidt, R. Heinz et al., Age of stratospheric air unchanged within uncertainties over the past 30 years, Nat. Geosci, vol.2, pp.28-31, 2009.

E. Eckert, T. Von-clarmann, M. Kiefer, G. P. Stiller, S. Lossow et al., Drift-corrected trends and periodic variations in MIPAS IMK/IAA ozone measurements, Atmos. Chem. Phys, vol.14, pp.2571-2589, 2014.
URL : https://hal.archives-ouvertes.fr/hal-00843691

V. Eyring, M. P. Chipperfield, M. A. Giorgetta, D. E. Kinnison, E. Manzini et al., Overview of the new CCMVal reference and sensitivity simulations in support of upcoming ozone and climate assessments and the planned SPARC CCMVal report, SPARC Newsl, vol.30, pp.20-26, 2008.

V. Eyring, J. M. Arblaster, I. Cionni, J. Sedlacek, J. Perlwitz et al., Long-term changes in tropospheric and stratospheric ozone and associated climate impacts in CMIP5 simulations, J. Geophys. Res, vol.118, pp.5029-5060, 2013.

H. Garny, T. Birner, H. Bönisch, and F. Bunzel, The effects of mixing on age of air, J. Geophys. Res.-Atmos, vol.119, pp.7015-7034, 2014.

S. Godin, G. Mégie, and J. Pelon, Systematic Lidar measurements of the stratospheric ozone vertical distribution, Geophys. Res. Letters, vol.16, pp.547-550, 1989.
URL : https://hal.archives-ouvertes.fr/insu-01263583

A. Hauchecorne, S. Godin, M. Marchand, B. Heese, and C. Souprayen, Estimation of the Transport of Chemical Constituents from the Polar Vortex to Middle Latitudes in the Lower Stratosphere using the High-Resolution Advection Model MIMOSA and Effective Diffusivity, J. Geophys. Res, vol.107, issue.D20, p.8289, 2002.

N. E. Huang, Z. Shen, S. R. Long, M. C. Wu, H. H. Shih et al.,

. Liu, The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis, Proc. of the Royal Society of London A: Math., Physical and Engineering Sciences, vol.454, p.903995, 1971.

N. Glatthor, M. Höpfner, A. Leyser, G. P. Stiller, T. Von-clarmann et al., Global carbonyl sulfide (OCS) measured by MIPAS/Envisat during 2002-2012, Atmos. Chem. Phys, vol.17, pp.2631-2652, 2017.
URL : https://hal.archives-ouvertes.fr/insu-01557680

D. Hader, H. D. Kumar, R. C. Smith, and R. C. Worrest, Effects of solar UV radiation on aquatic ecosystems and interactions with climate change, Photochem. Photobiol. Sci, vol.6, pp.267-285, 2007.

P. Haynes and E. Shuckburgh, Effective diffusivity as a diagnostic of atmospheric transport, 2. Troposphere and lower stratosphere, J. Geophys. Res, vol.105, pp.795-817, 2000.

A. Hauchecorne, S. Godin, M. Marchand, B. Heese, and C. Souprayen, Estimation of transport of chemical constituents from the polar vortex to mid-latitude in the lower stratosphere using the high resolution advection model MIMOSA and effective diffusivity, J. Geophys. Res, 2002.

A. Hauchecorne, M. L. Chanin, and P. Keckhut, Climatology and trends of the middle atmospheric temperature (33-37 km) as seen by Rayleigh lidar over the south of France, J. Geophys. Res, vol.96, pp.297-312, 1991.

M. I. Hegglin and T. G. Shepherd, Large climate-induced changes in ultraviolet index and stratosphere-to-troposphere ozone flux, Nature Geoscience, vol.2, pp.687-691, 2009.

J. R. Holton, P. H. Haynes, M. E. Mcintyre, A. R. Douglass, R. B. Rood et al., Stratospheretroposphere exchange, Rev. Geophys, vol.33, pp.403-439, 1995.

V. G. Kakani, K. R. Reddy, D. Zhao, and K. Sailaja, Field crop responses to ultraviolet-B radiation: A review, Agric. For. Meteorol, vol.120, pp.191-218, 2003.

P. Keckhut, A. Hauchecorne, and M. L. Chanin, Midlatitude long-term variability of the middle atmosphere: Trends and cyclic and episodic changes, J. Geophys. Res, vol.100, pp.887-905, 1995.

G. Kirgis, Thèse de doctorat 'Evaluation du transport isentropique à travers la barrière dynamique stratosphérique subtropicale de l'hémisphère sud, 2008.

P. Lin and Q. Fu, Changes in various branches of the Brewer-Dobson circulation from an ensemble of chemistry climate models, Journal of Geophysical Research : Atmospheres, vol.118, pp.73-84, 2013.

E. Mahieu, R. Zander, G. C. Toon, M. K. Vollmer, S. Reimann et al., Spectrometric monitoring of atmospheric carbon tetrafluoride (CF4) above the Jungfraujoch station since 1989: evidence of continued increase but at a slowing rate, Atmos. Meas. Tech, vol.7, pp.333-344, 2014.

S. Madronich, The Atmosphere and UV-B Radiation at Ground Level, pp.1-39, 1993.

K. E. Mccusker, J. C. Fyfe, and M. Sigmond, Twenty-five winters of unexpected Eurasian cooling unlikely due to Arctic sea-ice loss, Nat. Geosci, vol.9, pp.838-842, 2016.

J. B. Mcqueen, Some methods for classification and analysis of multivariate observations, Proceedings of the 5th Berkeley Symposium on Mathematical Statistics and Probability, vol.I, pp.281-297, 1967.

N. Nakamura, Two-dimensional mixing, edge formation, and permeability diagnosed in an area coordinate, J. Atmos. Sci, vol.53, pp.1524-1537, 1996.

J. L. Neu, L. C. Sparling, and R. A. Plumb, Variability of the subtropical edges in the stratosphere, Journal of Geophysical Research, vol.108, issue.D15, 2003.

J. Pelon, Distribution verticale de l'ozone dans la troposphère et la stratosphère: étude expérimentale par télédetection laser et application aux échanges troposphère-stratosphère, 1985.

F. Ploeger, M. Abalos, T. Birner, P. Konopka, B. Legras et al., Quantifying the effects of mixing and residual circulation on trends of stratospheric mean age of air, Geophys. Res. Lett, vol.42, pp.2047-2054, 2015.

:. Sparc-ccmval, J. Neu, S. Strahan, V. Eyring, T. G. Shepherd et al., Chapter 5. Transport, in: SPARC Report on the Evaluation of Chemistry-Climate Models, 2010.

W. J. Randel and A. M. Thompson, Interannual variability and trends in tropical ozone derived from SAGE II satellite data and SHADOZ ozonesondes, J. Geophys. Res, vol.116, p.7303, 2011.

J. Sabburg and J. Wong, The effect of clouds on enhancing UVB irradiance at the earth's surface: a one year study, Geophys. Res. Lett, vol.27, issue.20, pp.3337-3340, 2000.

J. Sabburg and J. Wong, Evaluation of a sky/cloud formula for estimating UV-B irradiance under cloudy skies, J. Geophy. Res, vol.105, issue.D24, pp.685-714, 2000.

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, vol.6, 2014.

G. P. Stiller, F. Fierli, F. Ploeger, C. Cagnazzo, B. Funke et al., Shift of subtropical transport barriers explains observed hemispheric asymmetry of decadal trends of age of air, Atmos. Chem. Phys, vol.17, pp.11177-11192, 2017.

A. Tanskanen, A. Lindfors, A. Määttä, N. Krotkov, J. Herman et al., Validation of daily erythemal doses from Ozone Monitoring Instrument with ground-based UV measurement data, Journal of Geophysical Research, vol.112, 2007.

D. P. Van-vuuren, J. Edmonds, M. Kainuma, K. Riahi, A. Thomson et al., The representative concentration pathways : an overview, vol.109, 2011.

Z. Wu and N. E. Huang, Ensemble empirical mode decomposition: A noise-assisted data analysis method, Adv. Adapt. Data Anal, vol.1, issue.1, p.141, 2009.

Y. Wu and L. M. Polvani, Recent Trends in Extreme Precipitation and Temperature over Southeastern South America: The Dominant Role of Stratospheric Ozone Depletion in the CESM Large Ensemble, Journal of Climate, vol.30, 2017.

C. Y. Wright, C. Brogniez, P. Katlego, V. Ncongwane, G. Sivakumar et al., Sunburn Risk Among Children and Outdoor Workers in South Africa and Reunion Island Coastal Sites, Photochemistry and Photobiology, vol.89, pp.1226-1233, 2013.

G. Wmo, Ozone Research and Monitoring Project, Scientific Assessment of Ozone Depletion, 2018.

. De-chimie, Climat participant à l'exercice d'inter-comparaison CCMI (Chemistry Climate Model Initiative), couplées aux modèle TUV

. L'exercice-ccmi-consiste-À-projeter-le-climat and . La-chimie-terrestre-jusqu-;-meinshausen, 2011) est effectuée. La fin du travail consiste à étudier l'impact des ODS, GHG et aérosols sur l'évolution du rayonnement UV au cours du 21ème siècle, avec un focus particulier sur les tropiques de l'hémisphère sud. MOTS-CLE Rayonnement ultraviolet ; ozone ; tropiques ; climat ; aérosols ; projection climatique ; modélisation

J. Cadet, , 2016.

, Région Réunion Les causes potentielles de l'augmentation des cancers de la peau sont nombreuses. Parmi cellesci on peut citer les changements comportementaux ou les modifications de l'intensité des rayonnements ultraviolets (UV) à la surface, en réponse aux perturbations de paramètres environnementaux (ozone stratosphérique, nébulosité, aérosols, réflectivité) dues au changement climatique ou aux activités anthropiques, « Impact des rayonnements UV sur la santé en zone tropicale sud

, Ces régions et leurs populations sont très exposées, du fait de plusieurs facteurs dont la démographie, les habitudes d'activités en extérieur et du fait qu'elles reçoivent un rayonnement UV très intense, le plus intense comparativement aux autres régions du globe. En effet, l'indice UV mesuré aux latitudes tropicales en été est 2, Compte tenu de leur position géographique, les régions tropicales reçoivent le maximum de rayonnements solaire incident et donc d'UV

. Innovation, . Valorisation, and . Le-numerique, Un réseau Sud-Africain de 6 instruments de type UV-Biometer a été comparé au satellite OMI. Bien que la mesure UV par satellite soit connue pour surévaluer (~10%) le rayonnement UV de surface, une calibration et un suivi régulier des instruments sont nécessaire ANNEXE, La mesure précise de l'intensité du rayonnement ultraviolet est donc primordiale, vol.4

, / Innovation pédagogique : Réalisation d'une visite virtuelle et pédagogique de l'observatoire atmosphérique du Maido

, coordination scientifique) de plus de 12 films documentaires scientifiques, dont 6 films de valorisation de la recherche au LACy, en partenariat avec le Service Audiovisuel et Multimédia de l'UR. Parmi les plus récents et films en cours ? 'Plumes of Piton de la Fournaise' présentation officielle à EGU 2017, film sur aux aléas liés aux panaches volcaniques à la Réunion et les recherches menées dans le programme ANR STRAP, 2017.

, Observatoire du Maido, sentinelle du climat', sélection festival film scientifique de la Réunion, vol.13, 2017.

. ?-'piton-de-la-fournaise--etna, Ce film suit une équipe internationale et pluridisciplinaire de scientifiques, engagées dans un projet de grande envergure (STRAP : Transdisciplinary Synergy to Respond to Aleas related to Volcanic Plumes) destiné à étudier les panaches de moindre intensité, Plumes de volcan, 2019.

. ?-en-cours, Le risque cyclonique à la Réunion' (52' autour du projet RenovRisk en partenariat avec l'équipe cyclones du LACy et Météo France), financement FEDER interreg5, vol.2020, 2017.