Dissolved inorganic nutrients from NES-LTER Transect cruises, including 4 macro-nutrients from water column bottle samples, ongoing since 2017

Dissolved inorganic nutrients are measured from water column bottle
samples taken on NES-LTER Transect cruises (ongoing since 2017) and
include nitrate + nitrite, ammonium, silicate, and phosphate. Sampling
frequency is approximately seasonal. Samples were filtered, frozen, then
processed at the Woods Hole Oceanographic Institution's Nutrient
Analytical Facility. Each sample may have up to 2 replicates, indicated
by a or b in the data table. These macro-nutrients are analyzed in
seawater using a colorimetric assay in which light absorbance is
measured versus known standards, and final concentrations are calculated
in micromole per liter. Some of the data are from cruises in collaboration with the Ocean Observatories Initiative (OOI).