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Cropland activity

Cropland activity. Work Plan - months 25-42 :. Collect meta-data for management – spatial (Abdn) Collate uncertainty data (Abdn)

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Cropland activity

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  1. Cropland activity

  2. Work Plan - months 25-42: • Collect meta-data for management – spatial (Abdn) • Collate uncertainty data (Abdn) • Compare error sources in flux data (table on instrumentation [& height] to develop into a paper on how to measure fluxes on cropland – shared experiences - Werner Eugster to co-ordinate – link to uncertainty? Stand-alone? Linked to night-time flux?) • Night-time flux – comparison with chamber measurements (Werner Eugster) • Synthesis paper to compare crop sites (add new sites) – synthesis paper (under way) • Define where sites fall on the SOC “depletion from natural” curve and compare fluxes (Werner Kutsch) • Carbon fluxes when crop is not there – all disturbances / transition periods (Enzo to coordinate) • Combined workshop (with forest and grassland / wetland activities) on how to use the flux data for modeling – (with John Tenhunen – Watti to pass on contacts to John) • Consolidated GHG balance for Europe (modelled N2O, CO2, CH4) – compare with IPCC - Abdn

  3. IPCC AR4 Agricultural GHG Mitigation Regional estimates of the biophysical mitigation potential for all practices and GHGs together First Order Draft – do not cite or quote

  4. IPCC AR4 Agricultural GHG Mitigation Effect of price of CO2-eq. (US$ t CO2-eq. -1) on the total global mitigation potential First Order Draft – do not cite or quote

  5. Cropland sites – do we need them? • Site years in croplands (less than other biomes – in demand,recently evolving and biggest terrestrial source, most uncertain source in Europe) • Representativeness – in terms of crop, climate, soil & management • Uniqueness – what does the site give that others do not • Data quality and delivery

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