Swen Jullien

Lab. of physical oceanography and remote sensing
ZI Pointe du diable, CS 10070
29280 Plouzane - France
Tel : +33 2 98 22 41 29

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
  • FUTURISKS (Past-to-FUTUre Coastal RISKS in Tropical French Overseas Island Territories: from impacts to solutions)
    • Understand the processes that control coastal erosion and flooding
    • Analyze cascading impacts and amplification phenomena at play in combined events of meteo-marine origin
    • Improving policies for risk reduction and adaptation to climate change in French overseas island territories
  • LAGOON (waves in barrier reef environments: from the deep ocean to the lagoon)
    • Characterize wave incident conditions around South Pacific islands and atolls
    • Evaluate the potential of radar (SARs, altimeters) and optical satellite missions for wave measurements offshore and in wide reef lagoons
  • SCINOBS (Science, Innovations and Underwater Observatories) https://www.onedeepocean.org/
    • Create and deploy innovative multidisciplinary observation systems 
    • Study the structuring of the ecosystems of the seamounts of southern New Caledonia
  • 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
  • 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
    • Assessing the climate of the 21st century in the island territories of the South Pacific
    • Study the local impacts of climate change and its uncertainties in terms of temperature, precipitation and extreme events
    • Bring together scientific experts to better understand the impact of climate change on the Pacific Ocean, the Pacific economy and societies
    • Bring stakeholders together to establish what research, data and indicators can support and ensure ocean sustainability
  • VENUS (wave-atmosphere-ocean over western boUndary currentS)
    • Study the effect of wave feedback on the dynamics of western boundary currents
    • Evaluate the atmospheric and oceanic response to air-sea interactions at (sub)-mesoscale
  • OROWSHI (Offshore wind turbine design: including joint Wind-wave information in Standard for Hurricane-exposed sites, ANR-FEM)
    • Improve the statistical representation of cyclone parameters
    • Create more realistic parametric surface and blade-height wind models from high-resolution observations and modeling
    • Assess the effect of land relief on offshore wind farms

Resarch profile, IDs, and free-access publications





2014-now: https://annuaire.ifremer.fr/cv/22146/


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


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.


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

Field Measurements

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

2010: INDOMIX, R/V Marion Dufresne, Indonesia


2015 - present

Research Scientist at Ifremer, Plouzané, LOPS-SIAM (Lab. of Physical Oceanography and Remote Sensing, Satellite and Air-sea Interactions team)

2014 - 2015

Post-doctoral Fellowship at LOCEAN, IPSL, Univ. Pierre et Marie Curie, Paris VI

2010 - 2013

Ph.D. at LEGOS, Univ. Paul Sabatier, Toulouse


M.D. "Ocean Atmosphere and Continent", Univ. Paul Sabatier, Toulouse


Bachelor degree in Fundamental Physics, Univ. Paul Sabatier, Toulouse