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in brief http://www.imber.info Prepared for GODAE-IMBER Wshp Paris, 12-13 June 2007
Goal “to investigate the sensitivity of marine biogeochemical cycles and ecosystems to global change, on time scales ranging from years to decades”
Theme 1 Interactions 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 in regulating climate?
Theme 4 Responses of society What are the relationships between marine biogeochemical cycles ecosystems, and the human system?
Working groups • 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 • DataManagement Committee … 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 >>> Need B-ARGO and new Assimilation schemes * Near real time
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 >>> Thanks for your contribution ! * Near real time