Workpackage number			2		Start date or starting event: kick-off workshop (month 2)
Workpackage title: Process understanding of carbon fluxes of Sub-Saharan African ecosystems
Activity Type: RTD/Innovation activities
Participant No.	1	2		3		4	5	6	7	8	9	10	11	12	13	14	15	16
Person-months:	18	24		8		2	36	2	0	0	30	1	8	2	6	0	0	0

Objectives 2.1 To obtain detailed knowledge of key site characteristics that control GHG fluxes.   2.2 To provide the basic data for evaluation and parameterization of bottom-up models for ecosystem carbon fluxes.   2.3 To derive seasonal budgets of soil CO2, N2O and CH4 fluxes from intensive studied sites and from short campaigns in sites of representative ecosystems where no intense measurements are carried out.   2.4 To collect basic eco-physiological information, such as on stomatal conductance and leaf photosynthetic capacity, for representative plant species from intensive studied sites.

Description of work Task 2.1 Site characterization and development of a methodological manual (in order to ensure comparability of the data).   Task 2.2 Process analysis by field measurements.

Deliverables 2.1 A manual of standardised methods for site parameterisation, suitable for application in Africa (Month 6).   2.2 Preliminary comparison of traditional GC flux measurements with measurements by portable fotoacustic multigas-analyser (Month 6).   2.3 A protocol for the gas flux measurements by portable fotoacustic multigas-analyser (Month 6).   2.4 Review of currently available models for N2O and CH4 production and consumption (Month 6).   2.5 Integrated data-set of additional parameters according to the Table WP2.2. (Month 24).   2.6 Seasonal budgets of N2O and CH4 fluxes from intensive studied sites (Month 24).   2.7 Process analysis at strategic sites, as described in the Table WP2.3. (Month 30).

Milestones and expected result 2.1 Methodological manual in order to ensure comparability of the basic site characterization (Month 6).   2.2 Acquisition of the portable instrumentation: Fotoacustic Multigas Analyser and intercalibration with other gas measuring techniques (gas chromatography), construction of accumulation chambers and connection to the fotoacustic analyser (Month 8).   2.3 Intensive seasonal measurements campaigns of soil CO2, N2O and CH4 fluxes in the intensive study sites (Month 12).   2.4 Intensive seasonal measurement campaigns of leaf photosynthetic capacity, stomatal conductance and xylem water potential (Month 14).   2.5 Publication of integrated site comparison (Month 24).   2.6 Publications on process analyses (Month 34).