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In this report document, we discuss the approach to a global integrated nitrogen assessment model chain allowing to evaluate the consequences of different socio-economic drivers (scenarios) and N mitigation management in terms of: (i) benefits, including food, feed, fibre (wood) and energy production and (ii) threats, including pollutant and greenhouse gas emissions, affecting the quality of air, soil and water and related climate, human health and biodiversity impacts and (iii) cost-effectiveness. This is done by addressing: •The overall modelling approach, including (i) the type of models that are neededto simulate nitrogen benefits and threats and (ii) the model linkages needed toenable a consistent multi-model approach in response to a consistent set ofscenarios of drivers (population development, income etc.) and N mitigationmeasures.•The modelling practice including (i) the modelling approaches, distinguishingbetween empirical and process-based models, and (ii) the available models thatwould serve an integrated global scale nitrogen assessment, considering thevariety of impacts and scales.•A modelling protocol of the involved models including information on: (i) themodels involved, (ii) basic agreements on base year (2010), spatial extent andresolution, temporal extent and resolution, (iii) scenarios, (iv) model outputsand (v) model linkages.•A database platform for the INMS model inputs and outputs.
