The Global NEWS workgroup developed global river nutrient export models and apply it in an integrated approach to connect socioeconomic factors and nutrient management to river export of nitrogen (N), phosphorus (P), silica (Si) and carbon (C) and nutrient forms in a spatially explicit way. We present the results of past trends (1970 - 2000) and four future scenarios (2030 and 2050) based on the Millennium Ecosystem Assessment scenarios. The results are found here as a zip file containing all the relevant data: Component B – GlobalNEWS.
Background information on the Global NEWS project is found: here
This work is being published in a special section of Global Biogeochemical Cycles (GBC) “Past and Future Trends in Nutrient Export From Global Watersheds and Impacts on Water Quality and Eutrophication” that includes 12 articles. Here we list six articles, describing the overall effort and main conclusions (Seitzinger et al., 2010), enhanced nutrient and hydrological input datasets and models (Bouwman et al., 2009; Van Drecht et al., 2009; Fekete et al., 2010); and a new dissolved Si model (Beusen et al., 2009) and the updates to Global NEWS ("NEWS 2", Mayorga et al., 2010).
References
- Beusen, A.H.W., A.F. Bouwman, H.H. Durr, A.L.M. Dekkers and J. Hartmann (2009), Global patterns of dissolved silica export to the coastal zone: Results from a spatially explicit global model. Global Biogeochemical Cycles 23, GB0A02, doi:10.1029/2008GB003281.
- Bouwman, A.F., A.H.W. Beusen and G. Billen (2009), Human alteration of the global nitrogen and phosphorus soil balances for the period 1970-2050. Global Biogeochemical Cycles 23, GB0A04, doi:10.1029/2009GB003576.
- Fekete, B.M., D. Wisser, C. Kroeze, E. Mayorga, L. Bouwman, W.M. Wollheim and C. Vorosmarty (2010), Millennium Ecosystem Assessment scenario drivers (1970-2050): Climate and hydrological alterations. Global Biogeochemical Cycles 24, GB0A12, doi:10.1029/2009GB003593.
- Mayorga, E., S.P. Seitzinger, J.A. Harrison, E. Dumont, A.H.W. Beusen, A.F. Bouwman, B.M. Fekete, C. Kroeze and G. Van Drecht (2010), Global Nutrient Export from WaterSheds 2 (NEWS 2): Model development and implementation. Environmental Modelling and Software 25(7):837-853, doi:10.1016/j.envsoft.2010.01.007.
- Seitzinger, S.P., E. Mayorga, A.F. Bouwman, C. Kroeze, A.H.W. Beusen, G. Billen, G. Van Drecht, E. Dumont, B.M. Fekete, J. Garnier and J.A. Harrison (2010), Global river nutrient export: A scenario analysis of past and future trends. Global Biogeochemical Cycles 24, GB0A08, doi:10.1029/2009GB003587.
- Van Drecht, G., A.F. Bouwman, J. Harrison and J.M. Knoop (2009), Global nitrogen and phosphate in urban waste water for the period 1970-2050. Global Biogeochemical Cycles 23, GB0A03, doi:10.1029/2009GB003458.
