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TANGGO thematic workshop on the "Variability of Southern Ocean biogeochemical cycles"

Objective of the workshop

TANGGO is a french research network which aims at better understanding how the various scales of oceanic physical variability control ocean biogeochemical cycles and ecosystems. Within this network, several groups are focusing on biogeochemical cycles in the Southern Ocean. With the recent KEOPS2 field campaign and several new research projects starting in 2012, it is timely to bring together our research community.

The objective of this thematic workshop is to share information about current projects and science studies within in the french community in order to foster collaborations and to identify new methodologies and approaches.

In particular the meeting will bring together modeler, observationists, physical oceanographers, biogeochemists and ecologists. A particular emphasis will be put on French-South African collaborations.


General information

The workshop will be held in Grenoble on May 22nd, 23rd, 24th 2012.

The workshop venue is "la Maison Jean Kuntzman" on Grenoble University eastern campus ( access).

There is no registration fees for this workshop. Refreshments and lunches are provided by TANGGO and SMOC projects.

The workshop is endorsed by  La Maison de la Modélisation et de la Simulation, Nanosciences et Environnement.

Online registration before Monday 21 May 2012 :  on this site.


Information for speakers

Presentation duration : 15 min.

The workshop language is mostly in french but the slides should be in english. Talks can be given in english if needed.

The contributors will load their electronic presentation (pdf or ppt) in the meeting room before the beginning of the session.


Agenda

The workshop is divided in six sub-thematic sessions with dedicated time-slots. Within each session, no definite time-schedule for presentations is provided.

This is a deliberate choice as the session chairs will be free to interrupt the course of their session for debating questions raised by the audience.

Two additional side sessions are devoted BIOCOSM and SMOC projects. The worskop participants are free to attend the side sessions.

Day 1 : Tue May 22nd

On site registration and loading of presentations at La Maison Jean Kuntzman from 12:30 onwards

13:00-13:10 : Welcome and general information by Marina Levy

13:10-14:30 : General session : Southern Ocean carbon cycle and climate variability

coffee break and refreshment

15:00-16:30 : General session : Southern Ocean carbon cycle and climate variability (continued)

coffee break and refreshment

17:00-18:30 : General session : Southern Ocean carbon cycle and climate variability (continued)

Day 2 : Wed May 23rd

9:00-10:30 : Session II : Southern Ocean Observing System

coffee break and refreshment

11:00-12:40 : Session III : Physical variability in the Antarctic Circumpolar belt

12:45 lunch (on-site)

14:00-16:00 : Session I : Seasonality of biogeochemical cycles in the Southern Ocean

coffee break and refreshment

16:30-18:00 : Side session on BIOCOSM project

20h dinner at Café de la Table Ronde (the oldest restaurant in town !),  register here

Day 3 : Thu May 24th

9:00-10:40 : Session IV : Small-scale physical processes and regional studies

coffee break and refreshment

11:10-12:40 : Session V : Southern Ocean ecosystems

12:45 lunch (on-site)

14:00-16:00 : Side Session : SMOC ANR project Kick-off meeting

The workshop will close at 16:00


Detailled program

General session : Southern Ocean carbon cycle and climate variability (Chair : Laurent Bopp)

Laurent Bopp : Impact of climate change on Chl and PP in the Southern Ocean as simulated by CMIP5 models

Virginie Racape : Carbon 13 reveals anthropogenic carbon uptake in the Southern Indien Ocean

Carolina Dufour : Eddy compensation of the enhanced sea‐to‐air CO2 flux during positive phases of the Southern Annular Mode

Claire Lo Monaco: Decadal changes in carbon and circulation observed in the South Indian Ocean: recent results from OISO

James Orr : Spatio-temporal decomposition of meridional transport of carbon in the Southern Ocean

Alessandro Tagliabue: The Southern Ocean Iron Cycle: Processes and Distributions

Martin Vancoppenolle: Sea-ice, biogeochemical cycles and climate

Julie Meilland: Temporal and spatial variability of δ18O In the Austral and Indian Ocean [20°S-70°S]

Severine Alvain: Latest news about PFT detection with PHYSAT and potential applications in the Austral ocean

Jacqueline Boutin: Primary production in the Southern Ocean inferred from CARIOCA fCO2 and satellite ocean color

Laure Resplandy: Seasonal and mesoscale variability of DIC in the Southern Ocean inferred from CARIOCA fCO2

Session I : Seasonality of biogeochemical cycles in the Southern Ocean (Chair : Marina Levy)

Stéphane Blain: Seasonality in mixed layer depth, light and Chla based elephant seal's data

Nicolette Chang: Seasonal characteristics of the mixed layer in the Southern Ocean: comparing data and model products

Joan Llort: Bloom triggering in the Southern Ocean : Sensitivity to physical parameters in a 1D idealized study

Sakina Ayata: Bloom triggering in the Southern Ocean : Sensitivity to biological parameters in a 1D idealized study

Session II : Southern Ocean Observing System (Chair : Julien Le Sommer)

Rosemary Morrow: The future SWOT mission : advances in observing submesoscale structures from space

Pedro Monteiro : Southern Ocean Seasonal Cycle Experiment (SOSCEx2012)

Stephane Blain : KEOPS2 : presentation of the scientific objectives and strategy at sea

Xavier Capet : Satellite and in-situ experiments south of Africa

Session III : Physical variability in the Antarctic Circumpolar belt (Chair : Julien Le Sommer)

Thierry Penduff: Forced and internal variability of the Southern Ocean: physical features and biogeochemical perspectives

Julien Le Sommer: On The Role of Eddies in the Southern Ocean Temperature Response to the Southern Annular Mode.

Gildas Mainsant: Regionally contrasted mixed layer depth response to the Southern Annular Mode

Frédéric Vivier: Variability of the ACC Transport across the Kerguelen plateau

Jan Zika: New ways of looking at ocean circulation and tracer transport

Jean-Baptiste Sallée: Anthropogenic carbon subduction in the Southern Ocean

Session IV : Small-scale physical processes and regional studies (Chair : Xavier Capet)

Sarah Gille: Physical processes governing natural iron fertilization in the Southern Drake Passage

Hela Sekma: Prevailing poleward heat flux across the Southern ACC Front over the Kerguelen Plateau

Guillaume Roullet: Recent progress on the energetics of eddies using models and ARGO data

Pierre Labreuche: Deep mixing due to internal lee waves in the Southern Ocean

Xavier Capet: Southern ocean meridional overturning circulation and the role of submesoscales

Session V : Southern Ocean ecosystems (Chair : Francesco d'Ovidio)

Christophe Guinet: Southern Elephant seal as oceanographic samplers

Francesco d'Ovidio: The structuring role of horizontal stirring on pelagic ecosystems

Cédric Cotté: Elephant seal behavior in an eddy environment

Side Session on BIOCOSM project (Chair : Julien Le Sommer)

BIOCOSM project is a CNES funded initiative. It aims at building a hierarchy of coupled Physical-BGC models of the South Indian Ocean for conducting several complementary research investigations. These investigations should improve both our understanding of the South Indian Ocean biogeochemical cycles and our ability to represent these cycles in realistic ocean models.

The purpose of the session is (i) to present the project achievments and future workplan to the audience and (ii) to discuss possible synergies with other initatives.

Side session : SMOC ANR Kick-off meeting (Chair : Xavier Capet)

SMOC project is an ANR funded project. It aims at better understanding the role of submesoscale dynamics on Southern Ocean circulation. For this purpose, the project team will set-up a series of very high resolution idealized model configuration for investigating various aspects of the Southern Ocean dynamical balances.

The session will be devoted to the project kick-off meeting.


Contact

  • Marina Levy : marina at locean-ipsl.upmc.fr
  • Xavier Capet : xavier.capet at ifremer.fr
  • Julien Le Sommer : julien.lesommer at legi.grenoble-inp.fr