Research interests

Ocean and atmosphere dynamics at the air-sea interface

• Coupled interactions at mesoscale
• Air-sea interactions in tropical cyclones
• Storm surge

Regional coupled modeling: CROCO / WRF / WW3 / ROMS / NEMO

Ongoing projects

• CROCO (Coastal and Regional Ocean COmmunity model) : https://www.croco-ocean.org/
  
  • Research on numerical developments and methods for small-scale ocean modeling in coastal restions and related multidisplinary questions
  • Sharing research and developments in a common modeling tool built to assess realistic and complex systems
• CYCLOBS : https://cyclobs.ifremer.fr/app/
  • Develop alogithms and appropriate treatments for extreme wind evaluation in tropical cyclones from SAR and band-L radiometer measurements
  • Provide a unique catalog of satellite measurements in tropical cyclones

• CFOSAT-COAST (Assessing the potential of CFOSAT mission for coastal reserach)
  • Evaluation of CFOSAT products in the Bay of Bengal and shallow coastal areas like the GBM delta
  • Impact of wave directionality on energy transfers from short to long waves in shallow waters in the GBM delta
  • Coastal hazards from waves in steep barrier or fringing reef environments

• COWS (CFOSAT for Ocean Waves Study)
  • Consistent analysis of wind and hurricane generated waves
  • Swell evolution and estimation of swell attenuation
  • Small scales variability and wave variability
• CASSIOWPE (Characterizing the Atmosphere and Sea Surface Interactions for the deployment of Offshore Wind in the guf of lion’s Physical Environment, ANR-FEM)
  • Evaluate the meteo-ocean conditions in potential areas of offshore wind farm deployment
  • Develop a prototype of new SAR data processing for wind fields
  • Develop a coupled ocean-wave-atmosphere system to assess the specific conditions of the Guld of Lion, and integrating a new parameterization of air-sea fluxes accountin for sea spray effects

• CTroVagueS (Interactions Tropical Cyclones-Waves-Submersion)
  • Characterize wind-wave-current interactions in tropical cyclones
  • Evaluate wave setup, runup and surge due to cyclones

• MAEVA (Modification of waves amplification and erosion)
  • Processes and measures of extreme wave generation in tropical storms
  • Coastal impacts
• SILLAGE (Processes in the tropical cyclones' wake)
  • Patterns and signature of cyclonic winds and waves in SST, SSS and SSH satellite measurements
  • Restratification processes in the cyclone wake
  • Climate impacts
• PULSATION (Peta scale mULti-gridS ocean-ATmosphere coupled simulatIONs) :
  • Impact of small-scales phenomena on systematic bias in climate models
  • Quantifying small-scale processes that determine large-scale climate
  • Multi-scale coupled ocean-atmosphere simulations on petascale computer

Resarch profile, IDs, and free-access publications

https://www.researchgate.net/profile/Swen_Jullien

http://www.researcherid.com/rid/L-5610-2015

http://orcid.org/0000-0002-5389-0532

Articles

2020

Dutheil Cyril, Jullien Swen, Aucan J., Menkes C., Le Gendre Romain, Andréfouët S. The wave regimes of the Central Pacific Ocean with a focus on pearl farming atolls . Marine Pollution Bulletin IN PRESS . https://doi.org/10.1016/j.marpolbul.2020.111751

Dutheil Cyril, Andrefouet S., Jullien Swen, Le Gendre Romain, Aucan J., Menkes C. (2020). Characterization of south central Pacific Ocean wind regimes in present and future climate for pearl farming application . Marine Pollution Bulletin , 160, 111584 (14p.) . https://doi.org/10.1016/j.marpolbul.2020.111584

Hilt M., Roblou L., Nguyen C., Marchesiello P., Lemarié F., Jullien Swen, Dumas Franck, Debreu L., Capet Xavier, Bordois L., Benshila R., Auclair F. (2020). Numerical modeling of hydraulic control, solitary waves and primary instabilities in the Strait of Gibraltar . Ocean Modelling , 151, 101642 (16p.) . https://doi.org/10.1016/j.ocemod.2020.101642

Jullien Swen, Masson Sébastien, Oerder Véra, Samson Guillaume, Colas François, Renault Lionel (2020). Impact of ocean-atmosphere current feedback on the ocean mesoscale activity: regional variations, and sensitivity to model resolution . Journal Of Climate , 33(7), 2585-2602 . Publisher's official version : https://doi.org/10.1175/JCLI-D-19-0484.1 , Open Access version : https://archimer.ifremer.fr/doc/00601/71329/

Dutheil C., Lengaigne Matthieu, Bador M., Vialard J., Lefèvre J., Jourdain N. C., Jullien Swen, Peltier A., Sultan B., Menkès C. (2020). Impact of projected sea surface temperature biases on tropical cyclones projections in the South Pacific . Scientific Reports , 10(1), 4838 (12p.) . Publisher's official version : https://doi.org/10.1038/s41598-020-61570-6 , Open Access version : https://archimer.ifremer.fr/doc/00614/72648/

Jullien Swen, Aucan Jérôme, Lefèvre Jérôme, Peltier Alexandre, Menkes Christophe E. (2020). Tropical Cyclone Induced Wave Setup around New Caledonia during Cyclone COOK (2017) . Journal Of Coastal Research , 95(sp1), 1454-1459 . https://doi.org/10.2112/SI95-281.1

2019
Dutheil Cyril, Bador M., Lengaigne M., Lefèvre J., Jourdain N. C., Vialard J., Jullien Swen, Peltier A., Menkes C. (2019). Impact of surface temperature biases on climate change projections of the South Pacific Convergence Zone . Climate Dynamics , 53(5-6), 3197-3219 . https://doi.org/10.1007/s00382-019-04692-6

Renault L., Masson S., Oerder V., Jullien Swen, Colas François (2019). Disentangling the Mesoscale Ocean-Atmosphere Interactions . Journal Of Geophysical Research-oceans , 124(3), 2164-2178 . Publisher's official version : https://doi.org/10.1029/2018JC014628 , Open Access version : https://archimer.ifremer.fr/doc/00485/59653/

Lengaigne Matthieu, Neetu S., Samson Guillaume, Vialard Jérôme, Krishnamohan K. S., Masson Sébastien, Jullien Swen, Suresh I., Menkes Christophe E. (2019). Influence of air–sea coupling on Indian Ocean tropical cyclones . Climate Dynamics , 52(1-2), 577-598 . https://doi.org/10.1007/s00382-018-4152-0

2018
Pianezze J., Barthe C., Bielli S., Tulet P., Jullien Swen, Cambon Gildas, Bousquet O., Claeys M., Cordier E. (2018). A New Coupled Ocean-Waves-Atmosphere Model Designed for Tropical Storm Studies: Example of Tropical Cyclone Bejisa (2013-2014) in the South-West Indian Ocean . Journal Of Advances In Modeling Earth Systems , 10(3), 801-825 . Publisher's official version : https://doi.org/10.1002/2017MS001177 , Open Access version : https://archimer.ifremer.fr/doc/00428/53983/

2017
Samson Guillaume, Masson Sebastien, Durand Fabien, Terray Pascal, Berthet Sarah, Jullien Swen (2017). Roles of land surface albedo and horizontal resolution on the Indian summer monsoon biases in a coupled ocean–atmosphere tropical-channel model . Climate Dynamics , 48(5-6), 1571-1594 . Publisher's official version : https://doi.org/10.1007/s00382-016-3161-0 , Open Access version : https://archimer.ifremer.fr/doc/00334/44481/

2016
Oerder Vera, Colas François, Echevin Vincent, Masson Sebastien, Hourdin Christophe, Jullien Swen, Madec Gurvan, Lemarie Florian (2016). Mesoscale SST–wind stress coupling in the Peru–Chile current system: Which mechanisms drive its seasonal variability? Climate Dynamics , 47(7-8), 2309-2330 . Publisher's official version : https://doi.org/10.1007/s00382-015-2965-7 , Open Access version : https://archimer.ifremer.fr/doc/00334/44480/

Menkes Christophe E., Lengaigne Matthieu, Levy Marina, Ethe Christian, Bopp Laurent, Aumont Olivier, Vincent Emmanuel, Vialard Jerome, Jullien Swen (2016). Global impact of tropical cyclones on primary production . Global Biogeochemical Cycles , 30(5), 767-786 . Publisher's official version : https://doi.org/10.1002/2015GB005214 , Open Access version : https://archimer.ifremer.fr/doc/00333/44449/

2014
Jullien Swen, Marchesiello Patrick, Menkes Christophe E., Lefevre Jerome, Jourdain Nicolas C., Samson Guillaume, Lengaigne Matthieu (2014). Ocean feedback to tropical cyclones: climatology and processes . Climate Dynamics , 43(9-10), 2831-2854 . https://doi.org/10.1007/s00382-014-2096-6

Samson G., Masson S., Lengaigne M., Keerthi M. G., Vialard J., Pous Stephane, Madec G., Jourdain N. C., Jullien Swen, Menkes C., Marchesiello P. (2014). The NOW regional coupled model: Application to the tropical Indian Ocean climate and tropical cyclone activity . Journal Of Advances In Modeling Earth Systems , 6(3), 700-722 . https://doi.org/10.1002/2014MS000324

2013

Jourdain N.C., M. Lengaigne, J. Vialard, G. Madec, C.E. Menkes, E.M. Vincent, S. Jullien, B. Barnier, Observation based estimates of surface cooling inhibition by heavy rainfall under tropical cyclones, Journal of Physical Oceanography, vol. 43, 1, pp. 205-221. https://doi.org/10.1175/JPO-D-12-085.1

2012

Jullien S., C. E. Menkes, P. Marchesiello, N. C. Jourdain, M. Lengaigne, A. Koch-Larrouy, J. Lefèvre, E. M. Vincent, V. Faure, Impact of tropical cyclones on the heat budget of the South Pacific ocean, Journal of Physical Oceanography, vol.42, 11, pp. 1882-1906. https://doi.org/10.1175/JPO-D-11-0133.1

Vincent E. M., M. Lengaigne, G. Madec, J. Vialard, G. Samson, C. E. Menkes, S. Jullien, N. Jourdain, Processes setting the characteristics of sea surface cooling induced by tropical cyclones, Journal of Geophysical Research, vol. 117.

https://doi.org/10.1029/2011JC007396

PhD Thesis

2010-2013 : PhD at LEGOS, University of Toulouse, France, Advisors: P. Marchesiello and C. Menkes (LOCEAN, IRD Nouméa) : Ocean feedback and response to tropical cyclones in the South Pacific: processes and climatology

Conferences

2019

Jullien S., L. Maillard,, C. Menkes, M. Lengaigne, S. Neetu, A. Mouche, Tropical cyclone induced waves: a statistical characterization, 2nd International Workshop on Waves, Storm Surges, and Coastal Hazards, Melbourne, Australia, 2019

2018

Jullien S., L. Vinour, J. Lefèvre, C. Menkes, M. Lengaigne, S. Neetu, A. Moturu, P. Marchesiello, A. Mouche, C. Combot, Interactions cyclones tropicaux - vagues - surcotes: analyse conjointe modélisation/observation, LEFE, Clermont-Ferrand, 2018

2017

Jullien S., S. Masson, F. Colas V. Oerder, L. Renault, Air-sea interactions at mesoscale : the impact of resolution and current feedback, Ateliers de Modélisation de l'Atmosphère, 2017
Jullien S., P. Marchesiello, C. Menkes, J. Lefèvre, N. Journdain, G. Samson, M. Lengaigne, Ocean feedback to tropical cyclone intensity, Ateliers de Modélisation de l'Atmosphère, 2017
Pianezze et al., Ocean-waves-atmosphere interactions in the South West Indian Ocean around the tropical cyclone Bejisa (La Réunion, 2014), EGU 2017

2016

Debreu L., F. Dumas, P.Marchesiello, F. Auclair, S. Jullien, Multiresolution in CROCO (Coastal and Regional Ocean Community model), EGU 2016

Masson S., S. Berthet, G. Samson, J. Crétat, F. Colas, V. Echevin, S. Jullien, C. Hourdin Sensitivity of ocean-atmosphere multiscale coupled model to oceanic parameterizations, Ocean Sciences, 2016

Oerder V., F. Colas, V. Echevin, S. Masson, F. Lemarié, S. Jullien, G. Madec, SST/Wind stress mesoscale coupling in the Peru-Chile region : what drives its temporal variations ?, Ocean Sciences, 2016

2015

Jullien S.,  F. Colas, S. Masson, V. Oerder, V. Echevin, G. Samson, J. Crétat, S. Berthet, C. Hourdin, Air-sea Energy Transfer at Mesoscale in a Coupled High-resolution Model: Impact of Resolution and Current Feedback, AGU Conference, San Francisco, December 2015

Masson S., S. Berthet, G. Samson, J. Crétat, F. Colas, V. Echevin, S. Jullien, C. Hourdin, Upscalling processes in an ocean-atmosphere multiscale coupled model, AGU Conference, San Francisco, December 2015

Samson G., S. Masson, F. Durand, P. Terray, S. Berthet, S. Jullien, Modeling efforts to improve the Asian Summer Monsoon representation in a coupled ocean-atmosphere tropical-channel model, AGU Conference, San Francisco, December 2015

2014

Jullien, P. Marchesiello, C.E. Menkes, J. Lefèvre, N. C. Jourdain, M. Lengaigne, G. Samson, Ocean feedback on tropical cyclone intensity in a multidecadal simulation model of the South Pacific, solicited talk, EGU meeting, Vienna, Austria, April, 2014

S. Jullien, P. Marchesiello, C.E. Menkes, J. Lefèvre, N. C. Jourdain, M. Lengaigne, G. Samson, Tropical cyclone-ocean interactions in a regional coupled model: climatology and processes, Ocean Sciences meeting, Honolulu, USA, February 23-28, 2014

P. Marchesiello, S. Jullien, Ocean coupling effect on tropical cyclone intensification: climatology and processes, Ocean Sciences meeting, Honolulu, USA, February 23-28, 2014

2013

S. Jullien, P. Marchesiello, C.E. Menkes, M. Lengaigne, G. Samson and J. Lefèvre, Tropical cyclones of the South Pacific Convergence Zone in a regional coupled model, 4th International Summit on Hurricanes and Climate Change, Kos, Greece, June 13-18, 2013

2012

S. Jullien, P. Marchesiello, C.E. Menkes, J. Lefèvre, N. Jourdain and M. Lengaigne, Tropical cyclones in a regional coupled ocean-atmoshere model of the SPCZ, AGU Conference, San Francisco, December 2012

2011

A. Koch-Larrouy , M. Lengaigne, E.M. Vincent, S. Jullien, G. Madec, C.E. Menkes, P. Marchesiello and C. de Boyer Montegut, Observed and model estimates of oceanic mixing under tropical cyclones and its climatic impact, 3rd International Summit on Hurricanes and Climate Change, Ixia, Rhodes, Greece, June 27-July 2, 2011

2010

S. Jullien, C. Menkes, P. Marchesiello, N. Jourdain, M. Lengaigne, J. Lefèvre, E.M. Vincent, V. Faure, A. Koch-Larrouy, Tropical cyclone impact on ocean heat budget in the SW Pacific ocean, AGU Conference, San Francisco, December 2010

A. Koch-Larrouy, M. Lengaigne, E. Vincent, C. de Boyer Montégut, G. Madec, S. Jullien, P. Marchesiello, Ch. Menkes: Influence du mélange induit par les cyclones sur l’Océan, Journées du GMMC, Météo-France, Novembre 2010

A. Koch-Larrouy, M. Lengaigne, E.M. Vincent, C. de Boyer de Montégut, S. Jullien, C.E. Menkes, P. Marchesiello, Vertical mixing induced by Tropical Cyclone using Argo data, Conférence « Prévisibilité du climat tropical », Météo-France, Toulouse, Juin 2010

Thomas Stieglitz, Pieter van Beek, Marc Souhaut, Sabine Cockenpot, Swen Jullien, Multi-tracer reconnaissance of Submarine Groundwater Discharge along the French Mediterranean coast, Conference on “Radon and Radium”, Jerusalem 14-19 March 2010

Field Measurements

2017: Field campaign to measure waves run up and coastline evolution at Hoian, Vietnam

2010: INDOMIX, R/V Marion Dufresne, Indonesia

Curriculum