Prepared for GODAE-IMBER Wshp

Paris, 12-13 June 2007

http://www.imber.info

in brief

Earth System Science Partnership (ESSP)

Ocean Projects in IGBP II today

“to investigate the sensitivity of marine biogeochemical cycles and ecosystems to global change, on time scales ranging from years to decades”

Goal

Theme 1Interactions between

biogeochemical cycles and marine food webs

What are the key marine biogeochemical cycles, ecosystem processes, and their interactions, that will be impacted by global change?

Theme 2 Sensitivity to Global Change

What are the responses of key marine biogeochemical cycles, ecosystems and their interactions to global change?

Theme 3 Feedbacks to the Earth

System

What is the role of ocean biogeochemistry and ecosystems inregulating climate?

What are the relationships between marine biogeochemicalcycles ecosystems, and the human system?

Theme 4 Responses of society

• End-to-End Food web Task Team (IMBER/GLOBEC)

• Joint SOLAS/IMBER carbon research group (IMBER/SOLAS)

• Joint LOICZ/IMBER Continental Margins Task Team (IMBER/LOICZ)

• Capacity Building Task Team

• Data Management Committee

Working groups

… towards a Joint GODAE/IMBER Group in 2008 an beyond ?

Challenging IMBER issues related to GODAE

• Overall:– High horizontal resolution (eddy resolving) AND high vertical resolution

of upper ocean synchronized to observed events

• Decadal variability:– Required improved reanalysis compare to others products (as CLIVAR)

if at high resolution vertically and horizontally

• Seasonal forecasting:– Needed for ecosystem approach to fisheries management

• Short-term forecast:– adaptive sampling effort for AUV/gliders or during oceanographic

campaign

• Coastal interaction needed for:– Nutrients, carbon, planktons, eggs and larvae cross-slope exchange– Downscaling basin variability on coastal marine resources dynamics

GODAE-IMBERprovisional status-1(Beijing, 2006)

• Ecosystem modelling are ready to be coupled with GODAE system, both for lower, medium and trophic levels

• Nutrients fuel to surface layer needs:– accurate vertical transport to bring intermediate/deep nutrients– Iron from continent needs margin interactions and dust

deposition• Improvement of GODAE product urged:

– Advanced assimilation scheme for fine vertical structure– Better resolution for tropical waves or frontal systems

• Operational marine ecosystem modelling– Offline demonstrator ready– Evaluation required by extensive datasets

>>> Need share experience between GODAE and IMBER

GODAE-IMBERprovisional status-2 (Beijing, 2006)

• Observations (from biogeochemistry to the foodweb):– CLIVAR repetitive transects– Time series stations*– VOS line*– Oxygen on Argo*– Nutrients on AUV/Glider*– Ocean colour* for Chl, plankton classification, DOM, particules– Continuous Plankton Recorder– Acoustic network* based on ADCP or VOS

• Assimilation issues :– Develop new scheme to constrain both physical and nutrients state– Use ocean colour joint to vertical observation as O2– Use ocean colour classification with CPR to constrain planktons – Use acoustic system/fish catch/predator track to constrain micronektons

and fish

* Near real time>>> Need B-ARGO and new Assimilation schemes

GODAE-IMBER Workshop(Paris, 2007)

• Term of reference:a-Review the present biogeochemistry and ecosystem development within

GODAE systems and related issues;b-Identify common interests between IMBER and GODAE;c-Evaluate real time datasets and assimilation schemes require for

biogeochemistry and ecosystem applications;d-Provide a report to IMBER and GODAE useful for further actions.

• Task Team format:– Restricted to around 6 IMBER representatives and 6 GODAE

representatives– Short presentations for long discussion and common brain storming

* Near real time

>>> Thanks for your contribution !