CATTIAUX Julien

Research scientist at CNRS

Centre National de Recherches Météorologiques (CNRM).
> Group: Climate and Large-Scale Modelling (GMGEC).
>> Team: Atmosphere Modelling & Analysis, Climate Sensitivity (AMACS).

Email: julien.cattiaux@meteo.fr
Phone: +33 (0)5 61 07 90 29
Office: Navier 140
Address: CNRM - 42, Av. Gaspard Coriolis - 31057 Toulouse, FRANCE

ORCid: 0000-0001-8630-5574
idHAL: julien-cattiaux
Twitter: @julienc4ttiaux

Cette page est également disponible en français.



 News


- Oct 12, 2019 - New paper - AMOC and summer sea ice as key drivers of the spread in Mid-Holocene winter temperature patterns over Europe in PMIP3 models, Global and Planetary Change.
- Jul 31, 2019 - New paper - The polar stratosphere as an arbiter of the projected tropical versus polar tug-of-war, Geophysical Research Letters.
- Jun 24-28, 2019 - Co-organizing the 14th International Meeting of Statistical Climatology, Toulouse, France (website).
- Jun 1, 2019 - New paper - Evaluation of CMIP6 DECK experiments with CNRM‐CM6‐1, Journal of Advances in Modeling Earth Systems.
- May 21, 2019 - New paper - Fast forward to perturbed equilibrium state, Geophysical Research Letters.
- Mar 19-23, 2019 - Attending the Riederalp 2019 Extremes Workshop, Riederalp, Switzerland. My talk: Defining single extreme weather events in a climate perspective.
- Dec 14, 2018 - Seminar at Laboratoire de l’Atmosphère et des Cyclones (LACy), Saint-Denis, La Réunion. My talk: Tropical cyclones in a warming world: a climate model perspective.



  Degrees & Experiment


- since 2014 — CNRS research scientist at CNRM (Toulouse, France).
- 2011/13 — Post-doc at CNRM (Toulouse, France), with H. Douville.
- 2010 — Ph.D. at LSCE (Gif-sur-Yvette, France), with R. Vautard & P. Yiou.
- 2007 — Master Degree in Physics of Ocean & Atmosphere, Univ. P&M. Curie (Paris, France).
- 2007 — Engineering Diploma, ENSTA-Paritech (Paris, France).
- 2002 — Scientific « Baccalauréat » (Limours, France).
- 1985 — Birth.



  Research


SCIENTIFIC INTERESTS

- Detection & attribution of changes in climate variability, statistical methods, flow-analogue analysis, record theory, attribution of extreme events.
- European temperature extremes, underlying mechanisms, atmospheric dynamics, amplifying feedbacks (clouds, soil moisture, snow cover), responses to climate change.
- Mid-latitude atmospheric dynamics, modes of variability, weather regimes, blockings, teleconnections, influence of the Arctic Amplification.
- Tropical cyclones, tracking algorithms, cyclogenesis indices.
- Evaluation of climate models, origins of present-day biases & future uncertainties, sensitivity to atmospheric resolution, contribution of cloud feedbacks to climate sensitivity.

TOOLS

R, CDO, NCL.
https://github.com/cattiaux

SUPERVISION

Post-docs
- 2018/19 - T. Oudar, Mid-latitude dynamics in a warming world. With H. Douville, APPLICATE.
- 2018/19 - Y. Robin, Attribution of single weather events. With A. Ribes, COSC/EUPHEME.
- 2015/16 - S. Thao, Methods for attribution of single weather events. With A. Ribes, EXTREMOSCOPE.
- 2014/15 - R. Schoetter, Response of European heat waves to climate change. With H. Douville, E3P.

M2 students
- 2015 - N. Trou-Kechout, Trends and variability of the Northern hemisphere jet stream.
- 2013 - A. Albert-Aguilar, Detection of changes in climate extreme events using entropy. With A. Ribes & P. Naveau.
- 2011 - C. Plante, Intraseasonal variability of European temperatures under climate change. With H. Douville & F. Chauvin, EUCLIPSE.

Other students
- 2016 - A. Horvath (L3), Record-breaking temperatures in a warming world.
- 2013 - Y. Léauté (ENM), Statistical reconstruction of the 20C global temperature. With A. Ribes.

SCIENTIFIC RESPONSABILITIES

- 2019 - Co-organizer of the 14th International Meeting on Statistical Climatology, June 24-28, 2019, Toulouse, France.
- 2016-2018 - Co-organizer of the working group on climate extremes at CNRM.
- 2015-2016 - Co-organizer of the session Identifying links between the large-scale atmospheric circulation and climate extremes at the annual AGU Meeting.
- 2014-2016 - Co-organizer of the weekly climate seminars at CNRM.

SCIENTIFIC VISITS

- Apr-Dec 2018 - Laboratoire de l’Atmosphère et des Cyclones (LACy), Saint-Denis, La Réunion.
- Nov-Dec 2015 - Earth System Sciences Department, University of California Irvine, CA, US.



  Teaching


COURSES

- since 2016 - Climate change (Course, M1 14h), ENM, Toulouse.
- since 2016 - Climate system and variability (Course, L3 6h), ENM, Toulouse.
- since 2016 - Physics of the climate system (Course, M2 10h), M2 SOAC, UPS, Toulouse.
- 2015-2017 - Statistics in climate sciences (R, CDO, NetCDF) (Tutorial, M1 3h), ENM, Toulouse.
- 2014-2017 - Statistics in climate sciences (Course, M2 6h), ENSAI, Rennes.
- 2013-2017 - Introduction to climate change (Course, M2 6h), ENPC, Champs sur Marne.
- 2009/10 - Glacial-interglacial cycles (Tutorial, M2 3h), M2 ICE, UVSQ, Paris.
- 2007/08 - Introduction to R and spectral analysis (Tutorial, M2 3h), M2 ICE, UVSQ, Saclay.


(slides available in French).



 Publications


Last update: October, 12, 2019 (changes in blue). E-mail me for electronic copies.

-  Submitted / in revision
* Cattiaux, J., F. Chauvin, O. Bousquet, S. Malardel and C.-L. Tsai, Projected changes in the Southern Indian Ocean cyclone activity assessed from high-resolution experiments and CMIP5 models, Journal of Climate, in revision.
* Oudar, T., J. Cattiaux, H. Douville, O. Geoffroy, D. Saint-Martin and R. Roehrig, Robustness and drivers of the Northern Hemisphere extratropical atmospheric circulation response to a CO2-induced warming in CNRM-CM6-1, submitted to Climate Dynamics.
* Ribes, A., S. Thao and J. Cattiaux, Describing the relationship between a weather event and climate change: a new statistical approach, Journal of Climate, in revision.
* Yiou, P., J. Cattiaux, D. Faranda, N. Kadygrov, A. Jezequel, P. Naveau, A. Ribes, Y. Robin, S. Thao, G. J. van Oldenborgh and M. Vrac,
Analyses of the European summer heatwave of 2018, « Explaining Extreme Events of 2018 from a Climate Perspective », Bulletin of the American Meteorological Society, in revision.

- 2019
34. Gainusa-Bogdan, A., D. Swingedouw, P. Yiou, J. Cattiaux, F. Codron and S. Michel (2019), AMOC and summer sea ice as key drivers of the spread in Mid-Holocene winter temperature patterns over Europe in PMIP3 models, Global and Planetary Change, in press. doi:10.1016/j.gloplacha.2019.103055
33. Peings, Y., J. Cattiaux and G. Magnusdottir (2019), The polar stratosphere as an arbiter of the projected tropical versus polar tug-of-war, Geophysical Research Letters, 46 (15), 9261—9270. doi:10.1029/2019GL082463
32. Saint-Martin, D., O. Geoffroy, L. Watson, H. Douville, G. Bellon, A. Voldoire, J. Cattiaux, B. Decharme and A. Ribes (2019), Fast forward to perturbed equilibrium climate, Geophysical Research Letters, 46 (15), 8969—8975. doi:10.1029/2019GL083031
31. Voldoire, A. et al. (2019), Evaluation of CMIP6 DECK experiments with CNRM-CM6-1, Journal of Advances in Modeling Earth Systems, 11 (7), 2177—2213. doi:10.1029/2019MS001683

- 2018
30. Peings, Y., J. Cattiaux, S. Vavrus and G. Magnusdottir (2018), Projected squeezing of the wintertime North-Atlantic jet, Environmental Research Letters, 13(7), 074016. doi:10.1088/1748-9326/aacc79
29. Jézéquel, A., J. Cattiaux, P. Naveau, S. Radanovics, A. Ribes, R. Vautard, M. Vrac and P. Yiou (2018), Trends of atmospheric circulation during singular hot days in Europe, Environmental Research Letters, 13(5), 054007. doi:10.1088/1748-9326/aab5da
28. Cattiaux, J. and A. Ribes (2018), Defining single extreme weather events in a climate perspective, Bulletin of the American Meteorological Society, 99, 1557—1568. doi:10.1175/BAMS-D-17-0281.1
27. Yiou, P., J. Cattiaux, A. Ribes, R. Vautard and M. Vrac (2018), Recent trends in the recurrence of North-Atlantic atmospheric circulation patterns, Complexity, vol2018, id3140915. doi:10.1155/2018/3140915

- 2017
26. Oudar, T., E. Sanchez-Gomez, F. Chauvin, J. Cattiaux, C. Cassou and L. Terray (2017), Respective effects of Arctic sea ice loss and GHGs increase on the Northern Hemisphere atmospheric circulation, Climate Dynamics, 49, 3693. doi:10.1007/s00382-017-3541-0
25. Peings, Y., J. Cattiaux, S. Vavrus and G. Magnusdottir (2017), Changes in the mid-latitude atmospheric circulation in the CESM Large Ensemble, Journal of Climate, 30, 5943—5960. doi:10.1175/JCLI-D-16-0340.1
24. Vavrus, S., F. Wang, J. Martin, J. Francis, Y. Peings and J. Cattiaux (2017), Changes in North American Atmospheric Circulation and Extreme Weather, Journal of Climate, 30, 4317—4333. doi:10.1175/JCLI-D-16-0762.1

- 2016
23. Cattiaux, J., Y. Peings, D. Saint-Martin, N. Trou-Kechout and S.J. Vavrus (2016), Sinuosity of mid-latitude atmospheric flow in a warming world, Geophysical Research Letters, 43, 8259—8268. doi:10.1002/2016GL070309
22. Bessac, J., P. Ailliot, J. Cattiaux and V. Monbet (2016), Comparison of hidden and observed regime-switching autoregressive models for (u,v)-components of wind fields in the Northeast Atlantic, Advances in Statistical Climatology, Meteorology and Oceanography, 2, 1—16. doi:10.5194/ascmo-2-1-2016
21. Cassou, C. and J. Cattiaux (2016), Disruption of the European climate seasonal clock in a warming world, Nature Climate Change, 6, 589—594. doi:10.1038/nclimate2969
20. Lucas-Picher, P., J. Cattiaux, A. Bougie and R. Laprise (2016), How does large‑scale nudging in a regional climate model contribute to improving the simulation of weather regimes and seasonal extremes over North America?, Climate Dynamics, 46(3), 929—948. doi:10.1007/s00382-015-2623-0

- 2015
19. Douville, H., J. Colin, E. Krug, J. Cattiaux and S. Thao (2015), Mid-latitude daily summer temperatures reshaped by soil moisture under climate change, Geophysical Research Letters, 43(2), 812—818. doi:10.1002/2015GL066222
18. Cattiaux, J., H. Douville, R. Schoetter, S. Parey and P. Yiou (2015), Projected increase in diurnal and inter-diurnal variations of European summer temperatures, Geophysical Research Letters, 42(3), 899—907. doi:10.1002/2014GL062531
17. Schoetter, R., J. Cattiaux and H. Douville (2015), Changes of western European heat wave characteristics projected by the CMIP5 ensemble, Climate Dynamics, 45(5), 1601—1616. doi:10.1007/s00382-014-2434-8

- 2014
16. Yiou, P. and J. Cattiaux (2014), Contribution of atmospheric circulation to the wet South European winter of 2013, in « Explaining Extreme Events of 2013 from a Climate Perspective », Bulletin of the American Meteorological Society, 95 (9), S66—69. doi:10.1175/1520-0477-95.9.s1.1

- 2013
15. Yiou, P. and J. Cattiaux (2013), Contribution of atmospheric circulation to the wet North European summer of 2012, in « Explaining Extreme Events of 2012 from a Climate Perspective », Bulletin of the American Meteorological Society, 94 (9), S39—41. doi:10.1175/bams-d-13-00085.1
14. Cattiaux, J., and P. Yiou (2013), The U.S. heatwaves of spring-summer 2012 from the flow-analogue perspective, in « Explaining Extreme Events of 2012 from a Climate Perspective », Bulletin of the American Meteorological Society, 94 (9), S10—13. doi:10.1175/bams-d-13-00085.1
13. Cattiaux, J., and C. Cassou (2013), Opposite CMIP3/5 trends in the Northern Annular Mode explained by combined local sea-ice and remote tropical influences, Geophysical Research Letters, 40 (14), 3682—3687. doi:10.1002/grl.50643
12. Cattiaux, J., H. Douville, and Y. Peings (2013), European temperatures in CMIP5: origins of present-day biases and future uncertainties, Climate Dynamics, 41 (11-12), 2889—2907. doi:10.1007/s00382-013-1731-y
11. Peings, Y., J. Cattiaux and H. Douville (2013), Evaluation and response of cold spells over Western Europe in CMIP5 models, Climate Dynamics, 41 (11-12), 3025—3037. doi:10.1007/s00382-012-1565-z
10. Vautard, R., T. Noel, L. Li, M. Vrac, E. Martin, P. Dandin, J. Cattiaux and S. Joussaume (2013), Climate variability and trends in downscaled high-resolution simulations and projections over Metropolitan France, Climate Dynamics, 41 (5-6), 1419—1437. doi:10.1007/s00382-012-1621-8
9. Cattiaux, J., B. Quesada, A. Arakélian, F. Codron, R. Vautard, and P. Yiou (2013), North-Atlantic dynamics and European temperature extremes in the IPSL model: sensitivity to atmospheric resolution, Climate Dynamics, 40 (9-10), 2293—2310. doi:10.1007/s00382-012-1529-3
8. Cattiaux, J., H. Douville, A. Ribes, F. Chauvin, and C. Plante (2013), Towards a better understanding of changes in wintertime cold extremes over Europe: A pilot study with CNRM-CM5 and IPSL-CM5 atmospheric models, Climate Dynamics, 40 (9-10), 2433—2445. doi:10.1007/s00382-012-1436-7

- 2012
7. Cattiaux, J., P. Yiou, and R. Vautard (2012), Dynamics of future seasonal temperature trends and extremes in Europe: a multi-model analysis from CMIP3, Climate Dynamics, 38 (9—10), 1949—1964. doi:10.1007/s00382-011-1211-1
6. Cattiaux, J., and P. Yiou (2012), Contribution of atmospheric circulation to remarkable European temperatures of 2011, in « Explaining Extreme Events of 2011 from a Climate Perspective », Bulletin of the American Meteorological Society, 93, 1041—1067. doi:10.1175/BAMSD-12-00021.1

- 2011
5. Ouzeau, G., J. Cattiaux, H. Douville, A. Ribes, and D. Saint-Martin (2011), European cold winter 2009-2010: How unusual in the instrumental record and how reproducible in the Arpege-Climat model?, Geophysical Research Letters, 38, L11706. doi:10.1029/2011GL047667
4. Cattiaux, J., R. Vautard, and P. Yiou (2011), North-Atlantic SST amplified recent wintertime European land temperature extremes and trends, Climate Dynamics, 36 (11—12), 2113—2128. doi:10.1007/s00382-010-0869-0

- 2010
3. Cattiaux, J., R. Vautard, C. Cassou, P. Yiou, V. Masson-Delmotte, and F. Codron (2010), Winter 2010 in Europe: A cold extreme in a warming climate, Geophysical Research Letters, 37, L20704. doi:10.1029/2010GL044613
2. Vautard, R., J. Cattiaux, P. Yiou, J.N. Thépaut, and P. Ciais (2010), Northern Hemisphere atmospheric stilling partly attributed to an increase in surface roughness, Nature Geoscience, 3, 756—761. doi:10.1038/NGEO979

- 2009
1. Cattiaux, J., R. Vautard, and P. Yiou (2009), Origins of the extremely warm European fall of 2006, Geophysical Research Letters, 36 (6), L06713. doi:10.1029/2009GL037339

-  Other
5. Cattiaux, J., F. Chauvin, H. Douville and A. Ribes (2018), Événements météorologiques extrêmes et changement climatique, Encyclopédie de l’Environnement.
4. Cattiaux, J., F. Chauvin, H. Douville and A. Ribes (2016), Des bulletins météo extrêmes à prévoir, La Recherche , 517.
3. Boucher, O., et al. (2015), Projection des changements climatiques futurs, La Météorologie, 88, 56—68. doi:10.4267/2042/56362
2. Planton, S., et al. (2015), Evolution du climat depuis 1850, La Météorologie, 88, 48—55. doi:10.4267/2042/56361
1. Charbit, S., J.L. Dufresne, G. Ramstein, J. Cattiaux and L. Bopp (2013), Des climats du passé aux climats du futur, Chapter 10 in Paléoclimatologie 2 : Enquête sur les climats anciens, by J.-C. Duplessy and G. Ramstein, EDP Sciences, 450pp, ISBN : 978-2-7598-0741-3.

-  My Ph.D. Thesis
Cattiaux, J. (2010), Extrêmes de température en Europe: mécanismes et réponses au changement climatique, edited by Univ. P&M. Curie, published on TEL (mostly in French).



  Public communications


- 2019
[Mar] - Defining single extreme weather events in a climate perspective, Extreme climate events workshop, Riederalp, Switzerland.

- 2018
[Dec] - Tropical cyclones in a warming world: a climate model perspective, LACy seminar, Saint Denis, La Réunion, France.

- 2017
[Mar] - European climate variability in a warming world, ETHZ colloquium, Zurich, Switzerland.

- 2016
[Jun] - Disruption of the European climate seasonal clock in a warming world, 13IMSC meeting, Canmore, Alberta, Canada.
[Mar] - Sinuosity of mid-latitude atmospheric flow in a warming world, CNRM seminar, Toulouse, France.

- 2015
[Nov] - Northern mid-latitude atmospheric dynamics in a warming world, ESS seminar, University of California Irvine, CA, US.
[Mar] - Projected changes in the variability and extremes of European summer temperatures, Extreme climate events workshop, Riederalp, Switzerland.
[Jan] - North-atlantic atmospheric dynamics and climate change, AMA/IMAGO workshop, Toulouse, France.

- 2014
[Dec] - Projected increase in diurnal and inter-diurnal variations of European summer temperatures, AGU meeting, San Francisco, CA, US.
[Dec] - Opposite CMIP3/5 trends in the NAM explained by [...], Polar-lower latitudes linkages workshop, Barcelona, Spain.

- 2013
[Dec] - Contribution of atmospheric dynamics to changes in European temperatures, PEPER workshop, Aussois, France.
[Jun] - European temperatures in CMIP5: present-day biases and future uncertainties, 12IMSC meeting, Jeju, South Korea.

- 2012
[Nov] - European temperatures and North-Atlantic circulation in CMIP5, LSCE seminar, Gif-sur-Yvette, France.
[Sep] - Contribution of large-scale dynamics to recent European temperature extremes, Attribution of climate extremes workshop, Oxford, UK.
[May] - European temperature extremes in CMIP5: present-day biases and future uncertainties, CFMIP/EUCLIPSE meeting, Paris, France.

- 2011
[Jun] - Towards the understanding of future changes in European temperature extremes [...], CFMIP/GKSS/EUCLIPSE meeting, MetOffice, Exeter, UK.
[Mar] - Using RCMs for case studies of European temperature extremes, CNRM seminar, Toulouse, France.

- 2010
[Dec] - European temperature extremes: mechanisms and responses to climate change, Ph.D. defense, Paris, France.
[May] - North-Atlantic SST amplified recent wintertime European land temperature extremes and trends, EGU meeting, Vienna, Austria.

- 2009
[Sep] - The global land surface atmospheric stilling, LSCE seminar, Gif-sur-Yvette, France.
[Apr] - Origins of the extremely warm European fall of 2006, EGU meeting, Vienna, Austria.

- 2008
[Sep] - Recent warm extremes in Europe: a taste of future climate? (poster), EMS/ECAC meeting, Amsterdam, Netherlands.

-  Other
[Mar 2018] - Attribuer un événement météorologique extrême au changement climatique : le problème de la définition, INRA/MIAT, Auzeville-Tolosane.
[Nov 2017] - Changement climatique : la planète se réchauffe-t-elle vraiment ?, Lycée Pierre-Paul Riquet, St-Orens.
[Jun 2017] - Quel temps fera-t-il dans 59 ans ?, IMT, Toulouse (en l’honneur des 59e anniversaires de C. Léonard et P. Cattiaux).
[Nov 2015] - Evénements météorologiques extrêmes et changement climatique, Journées Formaterre, IFE/ENS, Lyon.
[Mar 2015] - Climat et Changement Climatique : la planète se réchauffe-t-elle (vraiment) ?, Lycée Jules Fil, Carcassonne.
[Dec 2013] - Quel sens donner aux événements extrêmes dans le contexte du changement climatique?, Journée Scientifique Météo & Climat, Paris.
[May 2013] - Le climat change-t-il (vraiment)? (avec A. Ribes), Café de la Statistique, Toulouse.
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