Nitrogen in irrigation water sources is a missing link in the agricultural nitrogen cycle and related policies in Europe - Supplementary data

<strong>Spatial_data:</strong> <br> Contains spatially explicit data (usually 10x10km) for: - Gross irrigation requirements (m3/(ha.yr)) - NO3 concentration in groundwater (mg NO3/L) - NO3 concentration in surface waters (mg N-NO3/L) - N in irrigation water (both in kg N/yr and kg N/(ha.yr)) <br> <strong>Country_data:</strong> <br> Contains national data for European countries for: - Gross irrigation requirements (km3/yr) - N in irrigation water sources (Gg N/yr) - N in irrigation water sources (kg N/(ha.yr)) <br> <br>