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(7) Presentation(s)
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Tue 09/17/13 13:00 Amphi 8, bât.B, Luminy JULLION Loïc (Geophysical Fluid Dynamics Institute (Florida State University)) The contribution of the Weddell Gyre to the Meridional Overturning Circulation and the carbon cycle (OPLC) ABSTRACT<BR><BR> The lower cell of the Meridional Overturning Circulation or MOC (the conversion of deep water originating from the North Atlantic) into Antarctic Bottom Water (AABW), filling the abyssal layer of the World’s ocean, is arguably the most relevant part of the global circulation to long-term (centennial to millennial time scales) climate variability due to its ability to sequester CO2 over long periods. We have now evidence that the properties of AABW in all of the Southern Ocean are changing, maybe causing a slow-down of the lower cell, driven by the strong freshwater discharge in the West Antarctic and in the Antarctic Peninsula. The Weddell Gyre in the Atlantic sector of the Southern Ocean is traditionally believed to be the main source region of AABW. Despite its presumed important role, large uncertainties remain on the formation and export rates of AABW in the Weddell Gyre. In addition, little is known about the carbon transport (both natural and Anthropogenic). Studies suggest that despite large volume of AABW production and large Anth. carbon uptake in the Weddell Sea, the Anth. carbon storage in the deep layers is small raising questions about the coupling between AABW formation and ventilation. I will be presenting an overview of the ANtarctic Deep Rates of EXport (ANDREX) project aiming at building physical (mass, heat, freshwater) and biogeochemical budgets (nutrients, carbon...) of the Weddell Gyre. Our results challenge the traditional paradigm depicting the Weddell Gyre as the dominant AABW formation region. Here, we propose that the net production of AABW in the Weddell Sea is relatively small (5 Sv vs ∼ 8 Sv in previous studies). Instead of a net producer, the Weddell Sea is a region where AABW formed outside of the gyre, in the Indian Sector of the Southern Ocean is ventilated and transformed in denser AABW. The locally- and remotely-formed AABW are then transported northward (8 Sv) towards lower latitude, making the Weddell Sea a very efficient export pathway. The carbon budget of the Weddell Sea reveals that despite a large upwelling or carbon- rich Circumpolar Deep Water in the surface layer of Weddell Gyre, little carbon is lost to the atmosphere due to sea ice cover and biological activity. Instead, the carbon is exported northward in the Scotia Sea (2.8 PgC/year) where it can be released in the atmosphere leading to outgassing in the Scotia Sea. <BR><BR> SHORT CV<BR><BR> Thèse à l'University of East Anglia à Norwich avec Karen Heywood sur les transformations de masse d'eau dans la confluence Brésil-Malouines. Postdoc au National Oceanography Centre de Southampton avec Alberto Naveira Garabato sur les échanges entre la Mer de Weddell et le Courant Circumpolaire Antarctique. Maintenant au Geophysical Fluid Dynamics Institute (Florida State University) avec Kevin Speer où je continue à travailler sur divers aspect de l'Océan Austral. Pour plus d'informations, merci de contacter Doglioli A. |
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Fri 10/11/13 13:00 amphi.11, bât.B, Luminy RAINAUD Romain (CNRM (Météo-France), Toulouse) Étude des échanges air-mer en Méditerranée Occidentale avec les prévisions du modèle AROME-WMED pendant la campagne HyMeX (OPLC) Les échanges air-mer jouent un rôle important pendant les évènements météorologiques intenses en Mer Méditerranée. Les observations collectées durant la campagne HyMeX SOP1 (5 Septembre – 6 Novembre 2012) ont permis d'évaluer leur représentation dans les modèles de prévisions. Le modèle atmosphérique AROME-WMED est évalué durant toute la campagne et pendant les évènements d'échanges air-mer intenses par comparaison avec les mesures des bouées ancrées de Météo-France localisées dans le Golfe du Lion (GoL, 4,7°E – 42,1°N) et au large de la côte d'Azur (Azur, 7,8°E – 43,4°N), des marisondes lancées durant la campagne et avec les mesures faites par le navire Marfret-Niolon qui rejoint régulièrement Marseille à Alger. Une bonne corrélation pour la température à 2 m et la pression au niveau de la mer a été trouvée, alors que le vent à 10 m et l'humidité relative à 2 m sont globalement surestimés. Pendant les forts échanges air-mer, les prévisions montrent des erreurs plus importantes par rapport aux bouées. Deux sources d'erreurs ont été examinées : la SST constante durant la prévision ne permet pas de prendre en compte les rapides variations de SST, et la surestimation du flux de chaleur sensible par la paramétrisation ECUME. Le champ de SST analysé ne prenant pas en compte les structures de méso-échelle est aussi une possible source d'erreurs. Les analyses des cartes d'échanges air-mer ont mis en valeur des zones propices aux forts échanges pouvant alimenter les systèmes fortement précipitant durant la campagne HyMeX SOP1 : la mer Baléares, le Golfe du Lion, la mer Ligure et la mer Tyrrhénienne. <BR><BR> CV<BR><BR> <BODY LANG="fr-FR" LINK="#0000ff" DIR="LTR"> <P STYLE="margin-right: 0.74cm; margin-bottom: 0cm"><FONT FACE="Times New Roman, serif"><FONT SIZE=3><B>Romain RAINAUD</B></FONT></FONT><FONT FACE="Times New Roman, serif"><FONT SIZE=2>, né le 19 Juin 1989 à Marseille (13), nationalité française</FONT></FONT></P> <P STYLE="margin-left: 1.75cm; margin-bottom: 0cm; line-height: 0.18cm"> <FONT FACE="Times New Roman, serif"><FONT SIZE=2>06.67.48.43.96 / @ : </FONT></FONT><FONT COLOR="#0000ff"><SPAN LANG="fr-FR"><A CLASS="western" HREF="mailto:romain_rainaud@yahoo.com"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN STYLE="text-decoration: none">romain_rainaud@yahoo.com</SPAN></FONT></FONT></A></SPAN></FONT></P> <P ALIGN=CENTER STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm"> <BR> </P> <P ALIGN=CENTER STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm"> <FONT FACE="Times New Roman, serif"><FONT SIZE=4 STYLE="font-size: 16pt"><B>Doctorant en modélisation couplée océan-atmosphère</B></FONT></FONT></P> <P ALIGN=CENTER STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm"> <BR> </P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #dbe5f1"> <FONT COLOR="#1f497d"><FONT FACE="Times New Roman, serif"><FONT SIZE=3 STYLE="font-size: 13pt"><B>Formation</B></FONT></FONT></FONT></P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <FONT FACE="Times New Roman, serif"><FONT SIZE=2>2012 – 2015 </FONT></FONT><FONT FACE="Times New Roman, serif"><FONT SIZE=2 STYLE="font-size: 11pt"><B>Doctorat en modélisation couplée océan-atmosphère</B></FONT></FONT><FONT FACE="Times New Roman, serif"><FONT SIZE=3> </FONT></FONT><FONT FACE="Times New Roman, serif"><FONT SIZE=2>au CNRM (Météo-France), Toulouse, France. Co-financement DGA</FONT></FONT></P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <FONT FACE="Times New Roman, serif"><FONT SIZE=2>2010 – 2012 </FONT></FONT><FONT FACE="Times New Roman, serif"><B>Master d’Océanographie Physique Chimique et Biologique</B></FONT><FONT FACE="Times New Roman, serif"><FONT SIZE=3> </FONT></FONT><FONT FACE="Times New Roman, serif"><FONT SIZE=2>au MIO, Marseille, France</FONT></FONT><FONT FACE="Times New Roman, serif"> </FONT> </P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <FONT FACE="Times New Roman, serif"><FONT SIZE=2>2007 – 2010 </FONT></FONT><FONT FACE="Times New Roman, serif"><B>Licence de Physique</B></FONT><FONT FACE="Times New Roman, serif"><FONT SIZE=3><B>, </B></FONT></FONT><FONT FACE="Times New Roman, serif"><FONT SIZE=2>université Paul-Cézanne, Marseille, France</FONT></FONT><FONT FACE="Times New Roman, serif"> </FONT> </P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <BR> </P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #dbe5f1"> <FONT COLOR="#1f497d"><FONT FACE="Times New Roman, serif"><FONT SIZE=3 STYLE="font-size: 13pt"><B>Expériences professionnelles</B></FONT></FONT></FONT></P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN STYLE="background: #ffffff">Sept. 2012–Mar. 2013 </SPAN></FONT></FONT><FONT FACE="Times New Roman, serif"><FONT SIZE=2 STYLE="font-size: 11pt"><B><SPAN STYLE="background: #ffffff">Campagne de mesures HyMeX SOP1 et SOP2 :</SPAN></B></FONT></FONT><FONT FACE="Times New Roman, serif"><B><SPAN STYLE="background: #ffffff"> </SPAN></B></FONT><FONT FACE="Times New Roman, serif"><FONT SIZE=2 STYLE="font-size: 11pt"><SPAN STYLE="font-style: normal"><SPAN STYLE="font-weight: normal"><SPAN STYLE="background: #ffffff">Secrétaire scientifique.</SPAN></SPAN></SPAN></FONT></FONT></P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <BR> </P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <FONT FACE="Times New Roman, serif"><FONT SIZE=2>Oct. 2012 – Fin 2015</FONT></FONT><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN STYLE="background: #ffffff"> </SPAN></FONT></FONT><FONT FACE="Times New Roman, serif"><SPAN STYLE="background: #ffffff"> </SPAN></FONT><FONT FACE="Times New Roman, serif"><B><SPAN STYLE="background: #ffffff">Thèse au CNRM (Météo France)</SPAN></B></FONT><FONT FACE="Times New Roman, serif"><B><SPAN STYLE="background: #ffffff">. </SPAN></B></FONT><FONT FACE="Times New Roman, serif"><FONT SIZE=2 STYLE="font-size: 11pt"><SPAN STYLE="font-style: normal"><SPAN STYLE="font-weight: normal"><SPAN STYLE="background: #ffffff">Modélisation couplée océan-atmosphère pour l'étude des évènements météorologiques intenses en Méditerranée. Toulouse, France</SPAN></SPAN></SPAN></FONT></FONT></P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <FONT COLOR="#948a54"><FONT FACE="Times New Roman, serif"><FONT SIZE=2 STYLE="font-size: 9pt"><I><SPAN STYLE="background: #ffffff">Encadrement : Dr Véronique Ducrocq, Dr Hervé Giordani et Dr Cindy Lebeaupin-Brossier</SPAN></I></FONT></FONT></FONT></P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <BR> </P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <FONT FACE="Times New Roman, serif"><FONT SIZE=2>Janv. – Juin 2012</FONT></FONT><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN STYLE="background: #ffffff"> </SPAN></FONT></FONT><FONT FACE="Times New Roman, serif"><SPAN STYLE="background: #ffffff"> </SPAN></FONT><FONT FACE="Times New Roman, serif"><B><SPAN STYLE="background: #ffffff">Stage de Master au MIO. </SPAN></B></FONT><FONT FACE="Times New Roman, serif"><SPAN STYLE="background: #ffffff">Mesure de turbulence océanique dans le Golfe du Lion. Analyses et Interprétation. Marseille, France</SPAN></FONT></P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <FONT COLOR="#948a54"><FONT FACE="Times New Roman, serif"><FONT SIZE=2 STYLE="font-size: 9pt"><I><SPAN STYLE="background: #ffffff">Encadrement : Dr Anne Petrenko et Dr Andrea Doglioli</SPAN></I></FONT></FONT></FONT></P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <BR> </P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <FONT FACE="Times New Roman, serif"><FONT SIZE=2>Juin 2011</FONT></FONT><FONT FACE="Times New Roman, serif"><SPAN STYLE="background: #ffffff"> </SPAN></FONT><FONT FACE="Times New Roman, serif"><B><SPAN STYLE="background: #ffffff">Stage d’été au COM. </SPAN></B></FONT><FONT FACE="Times New Roman, serif"><SPAN STYLE="background: #ffffff">Comparaisons de mesures </SPAN></FONT><FONT FACE="Times New Roman, serif"><I><SPAN STYLE="background: #ffffff">in situ</SPAN></I></FONT><FONT FACE="Times New Roman, serif"><SPAN STYLE="background: #ffffff"> et satellite de concentration de chlorophylle </SPAN></FONT><FONT FACE="Times New Roman, serif"><I><SPAN STYLE="background: #ffffff">a</SPAN></I></FONT><FONT FACE="Times New Roman, serif"><SPAN STYLE="background: #ffffff"> dans la baie de Marseille. Marseille, France</SPAN></FONT></P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <FONT COLOR="#948a54"><FONT FACE="Times New Roman, serif"><FONT SIZE=2 STYLE="font-size: 9pt"><I><SPAN STYLE="background: #ffffff">Encadrement : Dr Christel Pinazo</SPAN></I></FONT></FONT></FONT></P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #dbe5f1"> <FONT COLOR="#1f497d"><FONT FACE="Times New Roman, serif"><FONT SIZE=3 STYLE="font-size: 13pt"><B>Communication écrite et orale</B></FONT></FONT></FONT></P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <FONT FACE="Times New Roman, serif"><SPAN LANG="en-US"><B><SPAN STYLE="background: #ffffff">Workshop : </SPAN></B></SPAN></FONT><FONT COLOR="#215868"><FONT FACE="Times New Roman, serif"><FONT SIZE=2 STYLE="font-size: 11pt"><SPAN LANG="en-US"><B><SPAN STYLE="background: #ffffff">HyMeX 7th Workshop (</SPAN></B></SPAN></FONT></FONT></FONT><FONT COLOR="#0000ff"><SPAN LANG="fr-FR"><U><A CLASS="western" HREF="http://www.hymex.org/"><FONT COLOR="#0000ff"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><SPAN STYLE="font-weight: normal"><SPAN STYLE="background: #ffffff">http://www.hymex.org/</SPAN></SPAN></SPAN></FONT></FONT></FONT></A></U></SPAN></FONT><FONT COLOR="#215868"><FONT FACE="Times New Roman, serif"><FONT SIZE=2 STYLE="font-size: 11pt"><SPAN LANG="en-US"><B><SPAN STYLE="background: #ffffff">, Octobre 2013).</SPAN></B></SPAN></FONT></FONT></FONT></P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><SPAN STYLE="font-weight: normal"><SPAN STYLE="background: #ffffff">Sujet : </SPAN></SPAN></SPAN></FONT></FONT></FONT><FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><I><SPAN STYLE="font-weight: normal"><SPAN STYLE="background: #ffffff">How AROME-WMED forecasts the air-sea interface during HyMeX SOP1 ? </SPAN></SPAN></I></SPAN></FONT></FONT></FONT><FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><SPAN STYLE="font-style: normal"><SPAN STYLE="font-weight: normal"><SPAN STYLE="background: #ffffff">(</SPAN></SPAN></SPAN></SPAN></FONT></FONT></FONT><FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><SPAN STYLE="font-style: normal"><B><SPAN STYLE="background: #ffffff">R. Rainaud, </SPAN></B></SPAN></SPAN></FONT></FONT></FONT><FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><SPAN STYLE="font-style: normal"><SPAN STYLE="font-weight: normal"><SPAN STYLE="background: #ffffff">C. Lebeaupin-Brossier, V. Ducrocq, H. Giordani, M. Nuret, E. Bresson, M.N. Bouin, N. Fourrié)</SPAN></SPAN></SPAN></SPAN></FONT></FONT></FONT></P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><SPAN STYLE="font-style: normal"><SPAN STYLE="font-weight: normal"><SPAN STYLE="background: #ffffff"> </SPAN></SPAN></SPAN></SPAN></FONT></FONT></FONT><FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><I><SPAN STYLE="font-weight: normal"><SPAN STYLE="background: #ffffff">Ocean mixed layer responses to intense meteorological events during HyMeX SOP1 from a high-resolution ocean simulation. </SPAN></SPAN></I></SPAN></FONT></FONT></FONT><FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><SPAN STYLE="font-style: normal"><SPAN STYLE="font-weight: normal"><SPAN STYLE="background: #ffffff">(C. Lebeaupin-Brossier, T. Arsouze, E. Bresson, </SPAN></SPAN></SPAN></SPAN></FONT></FONT></FONT><FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><SPAN STYLE="font-style: normal"><B><SPAN STYLE="background: #ffffff">R. Rainaud, </SPAN></B></SPAN></SPAN></FONT></FONT></FONT><FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><SPAN STYLE="font-style: normal"><SPAN STYLE="font-weight: normal"><SPAN STYLE="background: #ffffff">V. Ducrocq, H. Giordani, M. Nuret, K. Béranger)</SPAN></SPAN></SPAN></SPAN></FONT></FONT></FONT></P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <FONT COLOR="#215868"><FONT FACE="Times New Roman, serif"><SPAN LANG="en-US"><B><SPAN STYLE="background: #ffffff">Turbintermed (</SPAN></B></SPAN></FONT></FONT><FONT COLOR="#0000ff"><SPAN LANG="fr-FR"><U><A CLASS="western" HREF="http://neptune2012.univ-tln.fr/TURBINTERMED.html"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><SPAN STYLE="background: #ffffff">http://neptune2012.univ-tln.fr/TURBINTERMED.html</SPAN></SPAN></FONT></FONT></A></U></SPAN></FONT><FONT COLOR="#215868"><FONT FACE="Times New Roman, serif"><SPAN LANG="en-US"><B><SPAN STYLE="background: #ffffff">, Avril 2012). </SPAN></B></SPAN></FONT></FONT> </P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><SPAN STYLE="font-style: normal"><SPAN STYLE="font-weight: normal"><SPAN STYLE="background: #ffffff">Sujet : </SPAN></SPAN></SPAN></SPAN></FONT></FONT></FONT><FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><I><SPAN STYLE="font-weight: normal"><SPAN STYLE="background: #ffffff">Turbulence measurements with SCAMP in the Gulf of Lion. </SPAN></SPAN></I></SPAN></FONT></FONT></FONT><FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><SPAN STYLE="font-style: normal"><SPAN STYLE="font-weight: normal"><SPAN STYLE="background: #ffffff">(</SPAN></SPAN></SPAN></SPAN></FONT></FONT></FONT><FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><SPAN STYLE="font-style: normal"><B><SPAN STYLE="background: #ffffff">R. Rainaud, </SPAN></B></SPAN></SPAN></FONT></FONT></FONT><FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><SPAN STYLE="font-style: normal"><SPAN STYLE="font-weight: normal"><SPAN STYLE="background: #ffffff">A. Petrenko, A. Doglioli, D. Malengros, F. Nencioli)</SPAN></SPAN></SPAN></SPAN></FONT></FONT></FONT></P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <BR> </P> <P ALIGN=JUSTIFY STYLE="margin-left: 0.03cm; margin-right: 0.11cm; margin-bottom: 0cm; background: #ffffff"> <FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2 STYLE="font-size: 11pt"><SPAN LANG="en-US"><SPAN STYLE="font-style: normal"><B><SPAN STYLE="background: #ffffff">Publications : </SPAN></B></SPAN></SPAN></FONT></FONT></FONT><FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2 STYLE="font-size: 11pt"><SPAN LANG="en-US"><SPAN STYLE="font-style: normal"><SPAN STYLE="font-weight: normal"><SPAN STYLE="background: #ffffff">Intense air-sea exchanges over the Wester Mediterranean Sea during the HyMeX campaign from the AROME-WMED forecasts and analysis (</SPAN></SPAN></SPAN></SPAN></FONT></FONT></FONT><FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><SPAN STYLE="font-style: normal"><B><SPAN STYLE="background: #ffffff">R. Rainaud, </SPAN></B></SPAN></SPAN></FONT></FONT></FONT><FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2><SPAN LANG="en-US"><SPAN STYLE="font-style: normal"><SPAN STYLE="font-weight: normal"><SPAN STYLE="background: #ffffff">C. Lebeaupin-Brossier, V. Ducrocq, H. Giordani, M. Nuret, E. Bresson, M.N. Bouin, N. Fourrié</SPAN></SPAN></SPAN></SPAN></FONT></FONT></FONT><FONT COLOR="#00000a"><FONT FACE="Times New Roman, serif"><FONT SIZE=2 STYLE="font-size: 11pt"><SPAN LANG="en-US"><SPAN STYLE="font-style: normal"><SPAN STYLE="font-weight: normal"><SPAN STYLE="background: #ffffff">), en cours de rédaction</SPAN></SPAN></SPAN></SPAN></FONT></FONT></FONT></P> </BODY> <BR><BR>SLIDES<BR>PDF file here below --------- ![]() Pour plus d'informations, merci de contacter Doglioli A. |
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Mon 05/05/14 13:00 salle de réunion TPR1 RdC, Bâtiment TPR1, RdC (à confirmer) GUIZEN Katell (LECOB, Banyuls sur mer) Biodiversity conservation and larval dispersal: the Gulf of Lions test case (OPLC) Self-sustainability of isolated Marine Protected Areas (MPAs) implicitely assumes a closed population functionning: at the spatial scale of the MPA, reproductive input only originates from the population. Relaxing this assumption lead to the concept of metapopulation which is a network of local populations connected by fluxes of migrants through dispersal. Metapopulation functionning imprints a dynamical view of the spatial distribution of species, as it allows for transient local populations extinction. Thus, metapopulation approach upscales species persistence from the local to the regional scale where demographic parameters may exhibit a spatial heterogeneity. Population and metapopulation dynamics models based on larval local retention and transfer rates derived from Lagrangian larval dispersal simulations was developped to study the vulnerability of at local and regional scales of benthic populations in the Gulf of Lions (NW Mediterranean). <BR><BR> CURRICULUM VITAE <BR> Ingénieur en Hydraulique et Mécanique (INP Grenoble) Docteur en Géophysique (U Grenoble) HDR en Sciences de l'Univers, de l'Environnement et de l'Espace (U Toulouse) j ai ete recrutee au CNRS en 2001 dans un laboratoire d oceanographie biologique a Banyuls pour y etudier par la modelisation, l experimentation et l observation l influence de differents processus physiques sur la dynamique des populations et des espèces benthiques. actuellement au LECOB <BR><BR> Page perso sur le site web du LECOB http://lecob.obs-banyuls.fr/fr/personnels/chercheurs_cnrs/guizien.html Pour plus d'informations, merci de contacter Doglioli A. |
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Mon 05/12/14 13:00 amphi Jean Jacques AUBERT, Bat A, Polytech Luminy HU Ziyuan (Chinese Academy of Sciences, Quindao) Numerical study of the seasonal variability of Aurelia sp.1 strobilation dynamics: Application to the JiaoZhou Bay, China (OPLC) The outbreaks of the inshore scyphozoan Aurelia sp.1 have been increasingly reported in the coastal waters of China in recent years, with detrimental impacts on local ecosystems and economies. The strobilation process is an important part of the A. sp.1 life cycle because it can increase the jellyfish population size by producing new jellyfish (ephyrae). Hence it is essential to investigate the strobilation dynamics in order to better understand and possibly predict jellyfish outbreaks. In this work, we present a model that provides a realistic simulation of the combined effects of temperature and food supply on the Aurelia sp.1 ephyra liberation dynamics. The parameterization of the model is based on the laboratory and field experiments and the literature. The model results show that temperature has a parabolic-like effect on liberated ephyra numbers. The numbers of liberated ephyra increase with temperature before reaching a peak and then decays. No ephyrae liberation occurs in very low or very high temperatures, despite the food level is high or not. While liberation occurs, high food supply increases ephyra production. Application of the model to JiaoZhou Bay with in-situ measured temperature and zooplankton abundance produces results coherent with the seasonal in situ observations. In JiaoZhou Bay, the ephyrae of Aurelia sp.1 usually appear in early April, and reaches their peak in abundance in June and the jellyfish outbreaks reported occurs in July-August. Experiments with the model show that there are two main periods of strobilation in JiaoZhou Bay. The first begins at early march and reaches its peak in May. The second occurs during October to early December with its peak in November. The first strobilation period is in a good agreement with in situ observations. No available data in JiaoZhou Bay could be used to validate the second one. Nevertheless, occurrence of A. aurita ephyrae was reported in late October in similar latitudes such as in Tokyo Bay. No jellyfish bloom observed after the autumn strobilation is probably due to a high mortality of ephyrae caused by low winter temperature. The present model produces realistic information on seasonal variability in Aurelia sp.1 strobilation process, and hence could be used as an important tool in better understanding or possibly in predicting the blooms of Aurelia sp.1. Pour plus d'informations, merci de contacter Doglioli A. |
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Thu 07/10/14 14:00 salle de réunion TPR1 RdC, Bâtiment TPR1, RdC LENAIN Luc (SIO-Scripps Institution of Oceanography) Development of unmanned technologies for ocean-atmosphere interaction research: Autonomous surface vehicle measurements of the ocean's response to Tropical Cyclone Freda (OPLC) On December 31, 2012, an instrumented autonomous surface vehicle (ASV, Wave Glider) transiting across the Pacific from Hawaii to Australia as part of the PacX project came very close (46km) to the center of a category 3 tropical cyclone, TC Freda, experiencing winds of up to 37 m s-1 and significant wave heights close to 10m. The Wave Glider was instrumented for surface-ocean-lower-atmosphere (SOLA) measurements including atmospheric pressure, surface winds and temperature, sea surface temperature, salinity, dissolved oxygen, fluorescence (Chlorophyll-a and turbidity), and surface-wave directional spectra. Novel observations of the ocean's response in three quadrants of TC Freda collected from the instrumented glider are presented. Evolution of the wind, the directional wave field, the sea surface temperature and the Stokes drift profile (calculated from the wave directional spectrum) as Freda passed near the vehicle are examined. Results are discussed in the context of the recent coupled wind-wave modeling and LES modeling of the marine boundary layer in hurricane Frances (Sullivan et al. 2012). Processes by which cold nutrient-rich waters are entrained and mixed from below into the mixed layer as the TC passes near the Wave Glider are presented and discussed. Enhanced measurements collected in November 2013 during the ONR SOCAL2013 field effort from the next generation of SOLA-instrumented Wave Gliders, currently under development at SIO, will also be discussed <BR><BR>Curriculum Vitae<BR> --------- ![]() Pour plus d'informations, merci de contacter Doglioli A. |
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Fri 07/18/14 13:00 Amphi 10, bât.B, Luminy DUFOIS Francois (CSIRO Marine and Atmospheric Research, Wembley, Australia) Impact of eddies on productivity in the South Indian Ocean: process study and development of an Indian Ocean Bio-Argo programme (OPLC) In this seminar we will first present in depth results of satellite remote sensing and modelling assessments of Indian Ocean eddies, and then outlines the plans for development of an international Bio-Argo capability in the Indian Ocean. A unique feature of the South Indian Ocean is the existence of Anticyclonic Eddies (ACE) which generally have higher chlorophyll-a concentrations than the Cyclonic Eddies (CE). Off Western Australia this anomalous behaviour is related to the seeding of the ACE with higher chlorophyll from shelf water and the retention of chlorophyll in these eddies. Here we show that ACE exhibit higher surface chlorophyll concentration than CE across the entire South Indian Ocean basin (from 20 to 28°S) during winter. Using Argo floats data and model outputs, we postulate that offshore of Western Australia the peculiar eddy/chlorophyll relationship may be partly related to a slight modulation of the seasonal cycle within eddies. Deeper winter mixing in ACE enhances the nutrient supply to the mixed layer, while shallower mixing in CE reduces it. Those atypical eddies will be one of the key targets for deployment of Bio-Argo floats in the near future. As part of an Australia-India Strategic Research Fund project, several robotic profiling floats equipped with novel bio-optical and biogeochemical sensors will be deployed in the South Eastern Indian Ocean to investigate the productivity of these ecosystems. <BR><BR> CV<BR> <A href=http://www.per.marine.csiro.au/staff/Francois.Dufois target=new>http://www.per.marine.csiro.au/staff/Francois.Dufois/</A> <BR><BR> SLIDES<BR> --------- ![]() Pour plus d'informations, merci de contacter Doglioli A. |
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Mon 02/09/15 13:00 Amphithéatre Bâtiment Méditerranée MAES Christophe (Laboratoire de Physique des Océans (LPO) – Institut de Recherche pour le Développement (IRD). Centre IFREMER de Brest.) Sur la variabilité thermohaline des petites échelles de surface à la stratification de l’océan global (OPLC) <B> ABSTRACT</B><BR><BR> Pour plus d'informations, merci de contacter Doglioli A. |