Data from: Soluble Iron Deposition Shifts External Nitrogen Supply in Oligotrophic Gyres

Decadal external nitrogen supply fields from the study "Soluble Iron Deposition Shifts External Nitrogen Supply in Oligotrophic Gyres" are provided here.

The dataset contains gridded (2° latitude × 2.5° longitude) fields for the 1980s, 1990s, 2000s, and 2010s, including:

NFIX: Decadal mean nitrogen fixation rates (mmol N m⁻² yr⁻¹) estimated from CESM2-derived soluble iron deposition and GEOS-Chem-derived inorganic nitrogen deposition.
NDEP: Decadal mean inorganic nitrogen deposition rates (mmol N m⁻² yr⁻¹) from GEOS-Chem simulations.
NVER: Climatological vertical nitrogen supply (mmol N m⁻² yr⁻¹) calculated based on GLODAPv2 nitrate concentration.
EP: Decadal mean export production at 100 m depth based on CESM2-POP2 particulate organic carbon flux (g C m⁻² yr⁻¹).
NPP: Climatological net primary production (g C m⁻² yr⁻¹) from VGPM and CbPM2 satellite-based products.

Decades are represented by the central year of each period (1985, 1995, 2005, 2015). All data fields follow CF-1.9 conventions.

Acknowledgments

M.-W.S. and T.-W.K. were supported by the National Research Foundation of Korea (Grant Nos. RS-2024-00337227, RS-2022-NR068504), and by the BK21 FOUR program (Grant No. 4120200313708). Additional support for T.-W.K. was provided by the OJEong Resilience Institute, Korea University. N.M.M., and L.L. were supported by the U.S. Department of Energy (DOE) under Grant No. DE-SC0021302, and the Earth Surface Mineral Dust Source InvesTigation (EMIT), a NASA Earth Ventures-Instrument (EVI-4) Mission.