Table 4.
Variables for selected biogeographical provinces.
| Biogeographical province | Ocean | Domain | dNO3 |
|---|---|---|---|
| CARB (Caribbean) | Atlantic | Trade wind | 0.13 ± 0.07 |
| ETRA (Eastern tropical Atlantic) | Atlantic | Trade wind | 0.56 ± 0.28 |
| NATR (North Atlantic tropical gyral) | Atlantic | Trade wind | 0.26 ± 0.25 |
| SATL (South Atlantic gyral) | Atlantic | Trade wind | 0.59 ± 0.56 |
| WTRA (Western tropical Atlantic) | Atlantic | Trade wind | 0.33 ± 0.12 |
| MEDI (Mediterranean Sea) | Atlantic | Westerly | 0.54 ± 0.58 |
| NASE (Northeast Atlantic subtropical gyral) | Atlantic | Westerly | 0.58 ± 0.33 |
| NASW (Northwest Atlantic subtropical gyral) | Atlantic | Westerly | 0.19 ± 0.10 |
| ISSG (Indian South subtropical gyre) | Indian | Trade wind | 0.31 ± 0.29 |
| MONS (Indian monsoon gyre) | Indian | Trade wind | 0.28 ± 0.08 |
| ARAB (Northwest Arabian Sea upwelling) | Indian | Westerly | 0.33 ± 0.09 |
| ARCH (Archipelagic deep basins) | Pacific | Trade wind | 0.17 ± 0.12 |
| NPTG (North Pacific Tropical gyre) | Pacific | Trade wind | 0.49 ± 0.45 |
| PEQD (Pacific equatorial divergence) | Pacific | Trade wind | 0.44 ± 0.33 |
| PNEC (North Pacific equatorial counter) | Pacific | Trade wind | 0.66 ± 0.29 |
| SPSG (South Pacific gyre) | Pacific | Trade wind | 0.51 ± 0.67 |
| WARM (Western Pacific warm pool) | Pacific | Trade wind | 0.10 ± 0.05 |
| NPSW (Northwest Pacific subtropical) | Pacific | Westerly | 0.12 ± 0.10 |
| TASM (Tasman Sea) | Pacific | Westerly | 0.96 ± 0.38 |
Mean ± standard deviation of nitrate diffusive fluxes (dNO3, mmolN m-2 d-1) calculated for the main open ocean biogeographical provinces defined in the Antarctic, Atlantic, Pacific and Indian oceans between 40° N–40° S by Longhurst34. Nitrate diffusive fluxes were calculated using the global model GM.