Nutrients/Description: Difference between revisions

Revision as of 15:19, 2 November 2016

Parts of Nutrients/Description

Component is implemented in:

Components:

Related IMAGE components

Projects/Applications

Key publications

References

Flowchart Nutrients. See also the Input/Output Table on the introduction page.

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 {{ComponentDescriptionTemplate
 |Reference=Bouwman et al., 2013c; Van Drecht et al., 2009; Cleveland et al., 1999; Salvagiotti et al., 2008; Beusen et al., 2014; Beusen et al., 2015; Beusen et al., 2016;
-|Description====Wastewater===
+|Description====General===
+The IMAGE-Global Nutrient Model (GNM) is a global distributed spatially explicit model using hydrology as the basis for describing nitrogen (N) and phosphorus (P) delivery to surface water and transport and in-stream retention in rivers, lakes, wetlands and reservoirs. IMAGE-GNM is coupled to the PCR-GLOBWB global hydrological model ([[Van Beek et al. 2011]]). In the IMAGE-GNM model, grid cells receive water with dissolved and suspended N and P from upstream grid cells; inside grid cells, N and P are delivered to water bodies via diffuse sources (surface runoff, shallow and deep groundwater, riparian zones; litterfall in floodplains; atmospheric deposition) and point sources (wastewater); N and P retention in a water body is calculated on the basis of the residence time of the water and nutrient uptake velocity; subsequently, water and nutrients are transported to downstream grid cells.
+===Wastewater===
 Urban wastewater contains N and P emitted by households and industries that are connected to a sewerage system, and households with sanitation but without a sewerage connection.