Seasonal profiles and Surface Dissolved Iron from research cruises for the Northern Gulf of Alaska LTER site, 2018-2019

Dissolved iron is an essential nutrient for phytoplankton, and its availability influences phytoplankton community composition. The dataset contains profiles and surface dissolved iron (< 0.2 micron) collected from the Northern Gulf of Alaska in 2018 and 2019 using a trace metal clean CTD rosette with modified external spring Niskin bottles (profile data), and a towed "fish" sampler with tubing attached to an air-actuated pump that transfers the water from the surface to a sampling station on the ship (surface data). The variable included is dFe (dissolved iron) with units in nanomoles of iron per liter of seawater (nM). Data was generated after preconcentration using a seaFast system and ICPMS detection. The file format is csv.