Fig. 1: Global nitrate (NO3−-N) pools for soils deeper than 2 m (2-205 m) in kg N per ha, which equate to 15.2 Pg N globally.

(A) Mean NO3−-N value for each cell, and (B) standard deviation. Map is at a spatial resolution of 10 km by 10 km.

(A) Mean NO3−-N value for each cell, and (B) standard deviation. Map is at a spatial resolution of 10 km by 10 km.