Nutrient concentration in seawater samples, collected from the underway supply, CTD and trace metal rosettes in the Southern Ocean during the austral summer of 2016/2017, on board the Antarctic Circumnavigation Expedition (ACE).

Dataset abstract

This dataset presents concentrations of nutrients (µmol/L): nitrous oxide (NOx), nitrate, nitrite, ammonium (NH4), phosphate (PO4) and silicic acid (Si), measured in samples of seawater during the Antarctic Circumnavigation Expedition (ACE). Samples were collected from CTD and trace metal rosette (TMR) deployments, as well as from the underway water supply on board, then analysed by flow injection following certified standards. This data was collected to support physical, chemical and biological oceanography studies in the Southern Ocean, conducted as part of ACE during the austral summer of 2016/2017.

Dataset contents

ace_seawater_nutrient_data.csv, data file, comma-separated values

data_analysis_nutrient_concentration_standards.csv, metadata, comma-separated values

quality_checking_crm_analysis_results.csv, metadata, comma-separated values

nutrient_concentrations_along_track_visualisation.png, metadata, portable network graphics

ace_seawater_nutrients_comparison_plots_tmr_ctd.pdf, metadata, portable document format

data_file_header.txt, metadata, text

README.txt, metadata text

change_log.txt

Change log

v1.1 - various changes to data and metadata, described below

added further data points to data file (those sampled from trace metal rosette)

added ACE station number and ACE event number to data file

reordered columns in data file

updated README with information about sampling of trace metal rosette

updated README with new citation, license, dataset contact and dataset contents, updated abstract

updated data_file_header with new data fields

added comparison plot of CTD and TMR data points

updated caption of plot of nutrient concentrations along track (only from CTD samples)

v1.0 - initial release of dataset

Dataset license

This nutrient concentration dataset is made available under the Creative Commons Attribution 4.0 International License (CC BY 4.0) whose full text can be found at https://creativecommons.org/licenses/by/4.0/