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Carbon Assimilation and Modelling of the European Land Surfaces

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Carbon Cycle Data Assimilation System
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Lead contractor:            MetO
Other Participant organisations:     CEA, MPI-BGC, ALTERRA, UNITUS and EFI
   
Objectives:
To assemble all information on land-biosphere processes provided by WPs 1 to 3 into a common framework, to ultimately enable carbon source and sink estimates at global terrestrial surfaces at a spatial resolution that satisfies the requirements of a carbon reporting system in support of the Kyoto Protocol.

Work description:

Extract and format relevant data to drive improved TEMs (from WP2) offline from 1990 onwards using meteorological operational analyses.

Carry out high-resolution TEM simulations of the European land carbon sink using the operational analyses plus remote sensing products (eg: seasonally-varying fAPAR).

Develop inverse models for the TEMs and ATM and use these within an offline Carbon Cycle Data Assimilation System (CCDAS), to adjust both TEM parameters and prior estimates of carbon fluxes based on a 20-25 year simulation period.

Begin online implementation of the CCDAS in a high-resolution atmospheric General Circulation Model (AGCM).  Make use of the existing data assimilation structure in the AGCM plus the TEM inverse model to nudge internal model variables such as respiring soil carbon and leaf nitrogen based on the atmospheric measurements.

Carry-out a prototype online CCDAS experiment to infer the European carbon balance from 1990 onwards.

Deliverables:

D4.1 Report on design of offline and online nowcasting carbon data assimilation systems.
D4.2 Estimates of the contemporary European land carbon sink, and its causes.

Milestones:

Month 15. Meteorological data available to drive TEMs.
Month 18. Offline simulations of European land carbon balance completed.
Month 21. Comparison of forward and inverse estimates.
Month 24. Inverse TEMs ready for use.
Month 27. Offline CCDAS tests completed.
Month 30. Report on design of online nowcasting system.
Month 36. Report on contemporary European land carbon sink.

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