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Table S2.  Global scale fluxes and inventories from our control simulation (year 2050) and the difference from our six case experiments (Case 1 - Increased Denitrification; Case 2 - No Denitrification; Case 3 - No N fixation; Case 4 - Increased N fixation; Case 5 - Increased denitrification as in Case 1, but forced with estimated last glacial maximum dust deposition; Case 6 - Increased denitrification as in Case 1, but with efficient diazotroph Fe utilization).  Results for Case 1 are shown at the end of the simulation (year 430), and at year 200 for comparison with the other simulations.  Shown are denitrification and N fixation (TgN/yr), primary production and export production (PgC/yr), atmospheric CO2 (ppm), oceanic nitrogen inventory (Ninv) (% change during simulation).  Also shown are basin scale and global N fixation and denitrification rates from each simulation (all in TgN/yr where Dind, Nind is denitrification and N fixation for the Indian basin, etc...), and the global imbalance (Nimb) between fixation and denitrification. 
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		Denitr	Nfix	PP	ExpP	AtCO2	Ninv	Dind	Nind	Datl	Natl	Dpac	Npac	Dglobal	Nglobal	Nimb
Control		65	58	48	6.1	276.8	-3.1	16.9	25.2	5.96	12.2	41.9	18.9	64.8	58.1	-7
Case 1 yr430	+96	+52	-4.4	-0.67	+5.5	-6.7	35.9	41.8	18.5	32.7	107	33.2	161.1	109.9	-51
Case 1 yr200	+109	+45	-3.7	-0.58	+4.1	-4.1	39.4	41.3	18.8	29.2	115	30.6	173.4	103.2	-70
Case 2 yr200	-65	-17.2	+0.72	+0.14	-4.0	+1.8	0	15.8	0	7.7	0	15.6	0	40.9	+41
Case 3 yr200	-24	-58	-6.6	-1.0	+7.8	-1.7	3.05	0	0.927	0	36.5	0	40.5	0	-41
Case 4 yr200	+5	+12	+1.2	+0.19	-5.1	+0.28	17.7	14.5	5.51	9.91	47.3	42.7	70.5	69.7	-0.8
Case 5 yr200	+97	+75	-4.3	+0.15	-16	-3.5	16.0	33.3	7.59	14.4	139	81.9	163	133	-30
Case 6 yr200	+125	+58	-2.3	-0.40	+0.14	-4.1	48.3	14.5	20.0	9.91	121	42.7	189	69.7	-120	
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