©2020 Biological and Chemical Oceanography Data Management Office.Funded by the U.S. National Science Foundation
These data include nutrient measurements from two oceanographic expeditions on R/V Roger Revelle from San Diego to San Diego, USA in June 2021 and on R/V Atlantic (CliOMZ AT50-10 expedition) from Golfito, Costa Rica to San Diego, USA in May-June 2023. Instruments used were a CTD profiler, a fluorometer, and a flow injection analysis system.
Water samples were collected during cruises RR2104 and AT50-10 in the eastern tropical and subtropical Pacific Ocean. Discrete water samples were obtained using a CTD rosette sampler equipped with 24 x 10 L Niskin bottles. Different depths were sampled ranging from 10 meters to 2200 meters.
Ammonium concentrations were measured on board from unfiltered 40 mL seawater samples using the o-phthaldialdehyde derivatization method with modifications as suggested in (Taylor et al. 2007) on an Aquafluor 8000 handheld fluorometer. Samples for nitrite and nitrate concentration measurements were syringe-filtered (0.22 µm, Sterivex) and stored at −20°C before concentrations were determined by Cd reduction coupled to colorimetric detection via the Griess assay on a Lachat autoanalyzer.
Santoro, A. E., Bayer, B. (2025) CliOMZ Nutrient profile data. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-01-14 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/948503 [access date]
Terms of Use
This dataset is licensed under Creative Commons Attribution 4.0.
If you wish to use this dataset, it is highly recommended that you contact the original principal investigators (PI). Should the relevant PI be unavailable, please contact BCO-DMO (info@bco-dmo.org) for additional guidance. For general guidance please see the BCO-DMO Terms of Use document.
©2020 Biological and Chemical Oceanography Data Management Office.